thevar1able/ClickHouse
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Merge branch 'ClickHouse:master' into keepersizeopt

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zhanglistar 2021-12-17 14:35:19 +08:00 committed by GitHub
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408 changed files with 11037 additions and 3547 deletions
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2
.gitattributes vendored
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@ -1,4 +1,2 @@
contrib/* linguist-vendored
*.h linguist-language=C++
# to avoid frequent conflicts
tests/queries/0_stateless/arcadia_skip_list.txt text merge=union

4
.github/workflows/anchore-analysis.yml vendored
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@ -8,6 +8,10 @@
name: Docker Container Scan (clickhouse-server)
env:
# Force the stdout and stderr streams to be unbuffered
PYTHONUNBUFFERED: 1
"on":
pull_request:
paths:

22
.github/workflows/backport.yml vendored
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@ -1,4 +1,9 @@
name: CherryPick
env:
# Force the stdout and stderr streams to be unbuffered
PYTHONUNBUFFERED: 1
concurrency:
group: cherry-pick
on: # yamllint disable-line rule:truthy
@ -8,18 +13,23 @@ jobs:
CherryPick:
runs-on: [self-hosted, style-checker]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/cherry_pick
ROBOT_CLICKHOUSE_SSH_KEY<<RCSK
${{secrets.ROBOT_CLICKHOUSE_SSH_KEY}}
RCSK
REPO_OWNER=ClickHouse
REPO_NAME=ClickHouse
REPO_TEAM=core
EOF
- name: Check out repository code
uses: actions/checkout@v2
with:
token: ${{secrets.ROBOT_CLICKHOUSE_COMMIT_TOKEN}}
fetch-depth: 0
- name: Cherry pick
env:
TEMP_PATH: ${{runner.temp}}/cherry_pick
ROBOT_CLICKHOUSE_SSH_KEY: ${{secrets.ROBOT_CLICKHOUSE_SSH_KEY}}
REPO_OWNER: "ClickHouse"
REPO_NAME: "ClickHouse"
REPO_TEAM: "core"
run: |
sudo pip install GitPython
cd $GITHUB_WORKSPACE/tests/ci

241
.github/workflows/backport_branches.yml vendored
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@ -1,4 +1,9 @@
name: BackportPR
env:
# Force the stdout and stderr streams to be unbuffered
PYTHONUNBUFFERED: 1
on: # yamllint disable-line rule:truthy
push:
branches:
@ -7,6 +12,9 @@ jobs:
DockerHubPush:
runs-on: [self-hosted, style-checker]
steps:
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Images check
@ -22,17 +30,23 @@ jobs:
needs: [BuilderDebRelease]
runs-on: [self-hosted, style-checker]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/compatibility_check
REPO_COPY=${{runner.temp}}/compatibility_check/ClickHouse
REPORTS_PATH=${{runner.temp}}/reports_dir
EOF
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Download json reports
uses: actions/download-artifact@v2
with:
path: ${{runner.temp}}/reports_dir
path: ${{ env.REPORTS_PATH }}
- name: CompatibilityCheck
env:
TEMP_PATH: ${{runner.temp}}/compatibility_check
REPO_COPY: ${{runner.temp}}/compatibility_check/ClickHouse
REPORTS_PATH: ${{runner.temp}}/reports_dir
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -51,24 +65,30 @@ jobs:
needs: [DockerHubPush]
runs-on: [self-hosted, builder]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/build_check
IMAGES_PATH=${{runner.temp}}/images_path
REPO_COPY=${{runner.temp}}/build_check/ClickHouse
CACHES_PATH=${{runner.temp}}/../ccaches
CHECK_NAME=ClickHouse build check (actions)
BUILD_NAME=package_release
EOF
- name: Download changed images
uses: actions/download-artifact@v2
with:
name: changed_images
path: ${{ runner.temp }}/images_path
path: ${{ env.IMAGES_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
with:
submodules: 'recursive'
submodules: 'true'
fetch-depth: 0 # otherwise we will have no info about contributors
- name: Build
env:
TEMP_PATH: ${{runner.temp}}/build_check
IMAGES_PATH: ${{runner.temp}}/images_path
REPO_COPY: ${{runner.temp}}/build_check/ClickHouse
CACHES_PATH: ${{runner.temp}}/../ccaches
CHECK_NAME: 'ClickHouse build check (actions)'
BUILD_NAME: 'package_release'
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -78,35 +98,41 @@ jobs:
uses: actions/upload-artifact@v2
with:
name: ${{ env.BUILD_NAME }}
path: ${{ runner.temp }}/build_check/${{ env.BUILD_NAME }}.json
path: ${{ env.TEMP_PATH }}/${{ env.BUILD_NAME }}.json
- name: Cleanup
if: always()
run: |
docker kill $(docker ps -q) ||:
docker rm -f $(docker ps -a -q) ||:
sudo rm -fr $TEMP_PATH
sudo rm -fr $TEMP_PATH $CACHES_PATH
BuilderDebAsan:
needs: [DockerHubPush]
runs-on: [self-hosted, builder]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/build_check
IMAGES_PATH=${{runner.temp}}/images_path
REPO_COPY=${{runner.temp}}/build_check/ClickHouse
CACHES_PATH=${{runner.temp}}/../ccaches
CHECK_NAME=ClickHouse build check (actions)
BUILD_NAME=package_asan
EOF
- name: Download changed images
uses: actions/download-artifact@v2
with:
name: changed_images
path: ${{ runner.temp }}/images_path
path: ${{ env.IMAGES_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
with:
submodules: 'recursive'
submodules: 'true'
fetch-depth: 0 # otherwise we will have no info about contributors
- name: Build
env:
TEMP_PATH: ${{runner.temp}}/build_check
IMAGES_PATH: ${{runner.temp}}/images_path
REPO_COPY: ${{runner.temp}}/build_check/ClickHouse
CACHES_PATH: ${{runner.temp}}/../ccaches
CHECK_NAME: 'ClickHouse build check (actions)'
BUILD_NAME: 'package_asan'
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -116,35 +142,41 @@ jobs:
uses: actions/upload-artifact@v2
with:
name: ${{ env.BUILD_NAME }}
path: ${{ runner.temp }}/build_check/${{ env.BUILD_NAME }}.json
path: ${{ env.TEMP_PATH }}/${{ env.BUILD_NAME }}.json
- name: Cleanup
if: always()
run: |
docker kill $(docker ps -q) ||:
docker rm -f $(docker ps -a -q) ||:
sudo rm -fr $TEMP_PATH
sudo rm -fr $TEMP_PATH $CACHES_PATH
BuilderDebTsan:
needs: [DockerHubPush]
runs-on: [self-hosted, builder]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/build_check
IMAGES_PATH=${{runner.temp}}/images_path
REPO_COPY=${{runner.temp}}/build_check/ClickHouse
CACHES_PATH=${{runner.temp}}/../ccaches
CHECK_NAME=ClickHouse build check (actions)
BUILD_NAME=package_tsan
EOF
- name: Download changed images
uses: actions/download-artifact@v2
with:
name: changed_images
path: ${{ runner.temp }}/images_path
path: ${{ env.IMAGES_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
with:
submodules: 'recursive'
submodules: 'true'
fetch-depth: 0 # otherwise we will have no info about contributors
- name: Build
env:
TEMP_PATH: ${{runner.temp}}/build_check
IMAGES_PATH: ${{runner.temp}}/images_path
REPO_COPY: ${{runner.temp}}/build_check/ClickHouse
CACHES_PATH: ${{runner.temp}}/../ccaches
CHECK_NAME: 'ClickHouse build check (actions)'
BUILD_NAME: 'package_tsan'
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -154,35 +186,41 @@ jobs:
uses: actions/upload-artifact@v2
with:
name: ${{ env.BUILD_NAME }}
path: ${{ runner.temp }}/build_check/${{ env.BUILD_NAME }}.json
path: ${{ env.TEMP_PATH }}/${{ env.BUILD_NAME }}.json
- name: Cleanup
if: always()
run: |
docker kill $(docker ps -q) ||:
docker rm -f $(docker ps -a -q) ||:
sudo rm -fr $TEMP_PATH
sudo rm -fr $TEMP_PATH $CACHES_PATH
BuilderDebDebug:
needs: [DockerHubPush]
runs-on: [self-hosted, builder]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/build_check
IMAGES_PATH=${{runner.temp}}/images_path
REPO_COPY=${{runner.temp}}/build_check/ClickHouse
CACHES_PATH=${{runner.temp}}/../ccaches
CHECK_NAME=ClickHouse build check (actions)
BUILD_NAME=package_debug
EOF
- name: Download changed images
uses: actions/download-artifact@v2
with:
name: changed_images
path: ${{ runner.temp }}/images_path
path: ${{ env.IMAGES_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
with:
submodules: 'recursive'
submodules: 'true'
fetch-depth: 0 # otherwise we will have no info about contributors
- name: Build
env:
TEMP_PATH: ${{runner.temp}}/build_check
IMAGES_PATH: ${{runner.temp}}/images_path
REPO_COPY: ${{runner.temp}}/build_check/ClickHouse
CACHES_PATH: ${{runner.temp}}/../ccaches
CHECK_NAME: 'ClickHouse build check (actions)'
BUILD_NAME: 'package_debug'
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -192,13 +230,13 @@ jobs:
uses: actions/upload-artifact@v2
with:
name: ${{ env.BUILD_NAME }}
path: ${{ runner.temp }}/build_check/${{ env.BUILD_NAME }}.json
path: ${{ env.TEMP_PATH }}/${{ env.BUILD_NAME }}.json
- name: Cleanup
if: always()
run: |
docker kill $(docker ps -q) ||:
docker rm -f $(docker ps -a -q) ||:
sudo rm -fr $TEMP_PATH
sudo rm -fr $TEMP_PATH $CACHES_PATH
############################################################################################
##################################### BUILD REPORTER #######################################
############################################################################################
@ -207,22 +245,26 @@ jobs:
- BuilderDebRelease
- BuilderDebAsan
- BuilderDebTsan
- BuilderDebUBsan
- BuilderDebMsan
- BuilderDebDebug
runs-on: [self-hosted, style-checker]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/report_check
REPORTS_PATH=${{runner.temp}}/reports_dir
CHECK_NAME=ClickHouse build check (actions)
EOF
- name: Download json reports
uses: actions/download-artifact@v2
with:
path: ${{runner.temp}}/reports_dir
path: ${{ env.REPORTS_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Report Builder
env:
TEMP_PATH: ${{runner.temp}}/report_check
REPORTS_PATH: ${{runner.temp}}/reports_dir
CHECK_NAME: 'ClickHouse build check (actions)'
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -241,19 +283,25 @@ jobs:
needs: [BuilderDebAsan]
runs-on: [self-hosted, func-tester]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/stateless_debug
REPORTS_PATH=${{runner.temp}}/reports_dir
CHECK_NAME=Stateless tests (address, actions)
REPO_COPY=${{runner.temp}}/stateless_debug/ClickHouse
KILL_TIMEOUT=10800
EOF
- name: Download json reports
uses: actions/download-artifact@v2
with:
path: ${{runner.temp}}/reports_dir
path: ${{ env.REPORTS_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Functional test
env:
TEMP_PATH: ${{runner.temp}}/stateless_debug
REPORTS_PATH: ${{runner.temp}}/reports_dir
CHECK_NAME: 'Stateless tests (address, actions)'
REPO_COPY: ${{runner.temp}}/stateless_debug/ClickHouse
KILL_TIMEOUT: 10800
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -273,19 +321,25 @@ jobs:
needs: [BuilderDebDebug]
runs-on: [self-hosted, func-tester]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/stateful_debug
REPORTS_PATH=${{runner.temp}}/reports_dir
CHECK_NAME=Stateful tests (debug, actions)
REPO_COPY=${{runner.temp}}/stateful_debug/ClickHouse
KILL_TIMEOUT=3600
EOF
- name: Download json reports
uses: actions/download-artifact@v2
with:
path: ${{runner.temp}}/reports_dir
path: ${{ env.REPORTS_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Functional test
env:
TEMP_PATH: ${{runner.temp}}/stateful_debug
REPORTS_PATH: ${{runner.temp}}/reports_dir
CHECK_NAME: 'Stateful tests (debug, actions)'
REPO_COPY: ${{runner.temp}}/stateful_debug/ClickHouse
KILL_TIMEOUT: 3600
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -303,20 +357,30 @@ jobs:
##############################################################################################
StressTestTsan:
needs: [BuilderDebTsan]
runs-on: [self-hosted, stress-tester]
# func testers have 16 cores + 128 GB memory
# while stress testers have 36 cores + 72 memory
# It would be better to have something like 32 + 128,
# but such servers almost unavailable as spot instances.
runs-on: [self-hosted, func-tester]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/stress_thread
REPORTS_PATH=${{runner.temp}}/reports_dir
CHECK_NAME=Stress test (thread, actions)
REPO_COPY=${{runner.temp}}/stress_thread/ClickHouse
EOF
- name: Download json reports
uses: actions/download-artifact@v2
with:
path: ${{runner.temp}}/reports_dir
path: ${{ env.REPORTS_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Stress test
env:
TEMP_PATH: ${{runner.temp}}/stress_thread
REPORTS_PATH: ${{runner.temp}}/reports_dir
CHECK_NAME: 'Stress test (thread, actions)'
REPO_COPY: ${{runner.temp}}/stress_thread/ClickHouse
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -333,21 +397,27 @@ jobs:
############################# INTEGRATION TESTS #############################################
#############################################################################################
IntegrationTestsRelease:
needs: [BuilderDebRelease, FunctionalStatelessTestRelease]
needs: [BuilderDebRelease]
runs-on: [self-hosted, stress-tester]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/integration_tests_release
REPORTS_PATH=${{runner.temp}}/reports_dir
CHECK_NAME=Integration tests (release, actions)
REPO_COPY=${{runner.temp}}/integration_tests_release/ClickHouse
EOF
- name: Download json reports
uses: actions/download-artifact@v2
with:
path: ${{runner.temp}}/reports_dir
path: ${{ env.REPORTS_PATH }}
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Integration test
env:
TEMP_PATH: ${{runner.temp}}/integration_tests_release
REPORTS_PATH: ${{runner.temp}}/reports_dir
CHECK_NAME: 'Integration tests (release, actions)'
REPO_COPY: ${{runner.temp}}/integration_tests_release/ClickHouse
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
@ -371,6 +441,9 @@ jobs:
- CompatibilityCheck
runs-on: [self-hosted, style-checker]
steps:
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Finish label

5
.github/workflows/cancel.yml vendored
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@ -1,4 +1,9 @@
name: Cancel
env:
# Force the stdout and stderr streams to be unbuffered
PYTHONUNBUFFERED: 1
on: # yamllint disable-line rule:truthy
workflow_run:
workflows: ["CIGithubActions", "ReleaseCI", "DocsCheck", "BackportPR"]

25
.github/workflows/docs_check.yml vendored
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@ -1,4 +1,9 @@
name: DocsCheck
env:
# Force the stdout and stderr streams to be unbuffered
PYTHONUNBUFFERED: 1
on: # yamllint disable-line rule:truthy
pull_request:
types:
@ -14,6 +19,9 @@ jobs:
CheckLabels:
runs-on: [self-hosted, style-checker]
steps:
- name: Clear repository
run: |
sudo rm -rf $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Labels check
@ -24,6 +32,9 @@ jobs:
needs: CheckLabels
runs-on: [self-hosted, style-checker]
steps:
- name: Clear repository
run: |
sudo rm -rf $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Images check
@ -39,17 +50,23 @@ jobs:
needs: DockerHubPush
runs-on: [self-hosted, func-tester]
steps:
- name: Set envs
run: |
cat >> "$GITHUB_ENV" << 'EOF'
TEMP_PATH=${{runner.temp}}/docs_check
REPO_COPY=${{runner.temp}}/docs_check/ClickHouse
EOF
- name: Download changed images
uses: actions/download-artifact@v2
with:
name: changed_images
path: ${{ runner.temp }}/docs_check
path: ${{ env.TEMP_PATH }}
- name: Clear repository
run: |
sudo rm -rf $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Docs Check
env:
TEMP_PATH: ${{runner.temp}}/docs_check
REPO_COPY: ${{runner.temp}}/docs_check/ClickHouse
run: |
cp -r $GITHUB_WORKSPACE $TEMP_PATH
cd $REPO_COPY/tests/ci

1971
.github/workflows/main.yml vendored
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1818
.github/workflows/master.yml vendored
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17
.github/workflows/release.yml vendored
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@ -1,4 +1,9 @@
name: DocsReleaseChecks
env:
# Force the stdout and stderr streams to be unbuffered
PYTHONUNBUFFERED: 1
concurrency:
group: master-release
cancel-in-progress: true
@ -11,10 +16,15 @@ on: # yamllint disable-line rule:truthy
- 'website/**'
- 'benchmark/**'
- 'docker/**'
- '.github/**'
workflow_dispatch:
jobs:
DockerHubPush:
runs-on: [self-hosted, style-checker]
steps:
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Images check
@ -30,13 +40,16 @@ jobs:
needs: DockerHubPush
runs-on: [self-hosted, func-tester]
steps:
- name: Clear repository
run: |
sudo rm -fr $GITHUB_WORKSPACE && mkdir $GITHUB_WORKSPACE
- name: Check out repository code
uses: actions/checkout@v2
- name: Download changed images
uses: actions/download-artifact@v2
with:
name: changed_images
path: ${{runner.temp}}/docs_release
path: ${{ env.TEMP_PATH }}
- name: Docs Release
env:
TEMP_PATH: ${{runner.temp}}/docs_release
@ -44,6 +57,8 @@ jobs:
CLOUDFLARE_TOKEN: ${{secrets.CLOUDFLARE}}
ROBOT_CLICKHOUSE_SSH_KEY: ${{secrets.ROBOT_CLICKHOUSE_SSH_KEY}}
run: |
sudo rm -fr $TEMP_PATH
mkdir -p $TEMP_PATH
cp -r $GITHUB_WORKSPACE $TEMP_PATH
cd $REPO_COPY/tests/ci
python3 docs_release.py

609
.github/workflows/release_branches.yml vendored
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3
.gitmodules vendored
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@ -247,3 +247,6 @@
[submodule "contrib/sysroot"]
path = contrib/sysroot
url = https://github.com/ClickHouse-Extras/sysroot.git
[submodule "contrib/azure"]
path = contrib/azure
url = https://github.com/ClickHouse-Extras/azure-sdk-for-cpp.git

178
CHANGELOG.md
View File

@ -1,3 +1,181 @@
### ClickHouse release v21.12, 2021-12-15
#### Backward Incompatible Change
* *A fix for a feature that previously had unwanted behaviour.* Do not allow direct select for Kafka/RabbitMQ/FileLog. Can be enabled by setting `stream_like_engine_allow_direct_select`. Direct select will be not allowed even if enabled by setting, in case there is an attached materialized view. For Kafka and RabbitMQ direct selectm if allowed, will not commit massages by default. To enable commits with direct select, user must use storage level setting `kafka{rabbitmq}_commit_on_select=1` (default `0`). [#31053](https://github.com/ClickHouse/ClickHouse/pull/31053) ([Kseniia Sumarokova](https://github.com/kssenii)).
* *A slight change in behaviour of a new function.* Return unquoted string in JSON_VALUE. Closes [#27965](https://github.com/ClickHouse/ClickHouse/issues/27965). [#31008](https://github.com/ClickHouse/ClickHouse/pull/31008) ([Kseniia Sumarokova](https://github.com/kssenii)).
* *Setting rename.* Add custom null representation support for TSV/CSV input formats. Fix deserialing Nullable(String) in TSV/CSV/JSONCompactStringsEachRow/JSONStringsEachRow input formats. Rename `output_format_csv_null_representation` and `output_format_tsv_null_representation` to `format_csv_null_representation` and `format_tsv_null_representation` accordingly. [#30497](https://github.com/ClickHouse/ClickHouse/pull/30497) ([Kruglov Pavel](https://github.com/Avogar)).
* *Further deprecation of already unused code.* This is relevant only for users of ClickHouse versions older than 20.6. A "leader election" mechanism is removed from `ReplicatedMergeTree`, because multiple leaders are supported since 20.6. If you are upgrading from an older version and some replica with an old version is a leader, then server will fail to start after upgrade. Stop replicas with old version to make new version start. After that it will not be possible to downgrade to version older than 20.6. [#32140](https://github.com/ClickHouse/ClickHouse/pull/32140) ([tavplubix](https://github.com/tavplubix)).
#### New Feature
* Implemented more of the ZooKeeper Four Letter Words commands in clickhouse-keeper: https://zookeeper.apache.org/doc/r3.4.8/zookeeperAdmin.html#sc_zkCommands. [#28981](https://github.com/ClickHouse/ClickHouse/pull/28981) ([JackyWoo](https://github.com/JackyWoo)). Now `clickhouse-keeper` is feature complete.
* Support for `Bool` data type. [#31072](https://github.com/ClickHouse/ClickHouse/pull/31072) ([kevin wan](https://github.com/MaxWk)).
* Support for `PARTITION BY` in File, URL, HDFS storages and with `INSERT INTO` table function. Closes [#30273](https://github.com/ClickHouse/ClickHouse/issues/30273). [#30690](https://github.com/ClickHouse/ClickHouse/pull/30690) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Added `CONSTRAINT ... ASSUME ...` (without checking during `INSERT`). Added query transformation to CNF (https://github.com/ClickHouse/ClickHouse/issues/11749) for more convenient optimization. Added simple query rewriting using constraints (only simple matching now, will be improved to support <,=,>... later). Added ability to replace heavy columns with light columns if it's possible. [#18787](https://github.com/ClickHouse/ClickHouse/pull/18787) ([Nikita Vasilev](https://github.com/nikvas0)).
* Basic access authentication for http/url functions. [#31648](https://github.com/ClickHouse/ClickHouse/pull/31648) ([michael1589](https://github.com/michael1589)).
* Support `INTERVAL` type in `STEP` clause for `WITH FILL` modifier. [#30927](https://github.com/ClickHouse/ClickHouse/pull/30927) ([Anton Popov](https://github.com/CurtizJ)).
* Add support for parallel reading from multiple files and support globs in `FROM INFILE` clause. [#30135](https://github.com/ClickHouse/ClickHouse/pull/30135) ([Filatenkov Artur](https://github.com/FArthur-cmd)).
* Add support for `Identifier` table and database query parameters. Closes [#27226](https://github.com/ClickHouse/ClickHouse/issues/27226). [#28668](https://github.com/ClickHouse/ClickHouse/pull/28668) ([Nikolay Degterinsky](https://github.com/evillique)).
* *TLDR: Major improvements of completeness and consistency of text formats.* Refactor formats `TSV`, `TSVRaw`, `CSV` and `JSONCompactEachRow`, `JSONCompactStringsEachRow`, remove code duplication, add base interface for formats with `-WithNames` and `-WithNamesAndTypes` suffixes. Add formats `CSVWithNamesAndTypes`, `TSVRawWithNames`, `TSVRawWithNamesAndTypes`, `JSONCompactEachRowWIthNames`, `JSONCompactStringsEachRowWIthNames`, `RowBinaryWithNames`. Support parallel parsing for formats `TSVWithNamesAndTypes`, `TSVRaw(WithNames/WIthNamesAndTypes)`, `CSVWithNamesAndTypes`, `JSONCompactEachRow(WithNames/WIthNamesAndTypes)`, `JSONCompactStringsEachRow(WithNames/WIthNamesAndTypes)`. Support columns mapping and types checking for `RowBinaryWithNamesAndTypes` format. Add setting `input_format_with_types_use_header` which specify if we should check that types written in <format_name>`WIthNamesAndTypes` format matches with table structure. Add setting `input_format_csv_empty_as_default` and use it in CSV format instead of `input_format_defaults_for_omitted_fields` (because this setting should not control `csv_empty_as_default`). Fix usage of setting `input_format_defaults_for_omitted_fields` (it was used only as `csv_empty_as_default`, but it should control calculation of default expressions for omitted fields). Fix Nullable input/output in `TSVRaw` format, make this format fully compatible with inserting into TSV. Fix inserting NULLs in `LowCardinality(Nullable)` when `input_format_null_as_default` is enabled (previously default values was inserted instead of actual NULLs). Fix strings deserialization in `JSONStringsEachRow`/`JSONCompactStringsEachRow` formats (strings were parsed just until first '\n' or '\t'). Add ability to use `Raw` escaping rule in Template input format. Add diagnostic info for JSONCompactEachRow(WithNames/WIthNamesAndTypes) input format. Fix bug with parallel parsing of `-WithNames` formats in case when setting `min_chunk_bytes_for_parallel_parsing` is less than bytes in a single row. [#30178](https://github.com/ClickHouse/ClickHouse/pull/30178) ([Kruglov Pavel](https://github.com/Avogar)). Allow to print/parse names and types of colums in `CustomSeparated` input/output format. Add formats `CustomSeparatedWithNames/WithNamesAndTypes` similar to `TSVWithNames/WithNamesAndTypes`. [#31434](https://github.com/ClickHouse/ClickHouse/pull/31434) ([Kruglov Pavel](https://github.com/Avogar)).
* Aliyun OSS Storage support. [#31286](https://github.com/ClickHouse/ClickHouse/pull/31286) ([cfcz48](https://github.com/cfcz48)).
* Exposes all settings of the global thread pool in the configuration file. [#31285](https://github.com/ClickHouse/ClickHouse/pull/31285) ([Tomáš Hromada](https://github.com/gyfis)).
* Introduced window functions `exponentialTimeDecayedSum`, `exponentialTimeDecayedMax`, `exponentialTimeDecayedCount` and `exponentialTimeDecayedAvg` which are more effective than `exponentialMovingAverage` for bigger windows. Also more use-cases were covered. [#29799](https://github.com/ClickHouse/ClickHouse/pull/29799) ([Vladimir Chebotarev](https://github.com/excitoon)).
* Add option to compress logs before writing them to a file using LZ4. Closes [#23860](https://github.com/ClickHouse/ClickHouse/issues/23860). [#29219](https://github.com/ClickHouse/ClickHouse/pull/29219) ([Nikolay Degterinsky](https://github.com/evillique)).
* Support `JOIN ON 1 = 1` that have CROSS JOIN semantic. This closes [#25578](https://github.com/ClickHouse/ClickHouse/issues/25578). [#25894](https://github.com/ClickHouse/ClickHouse/pull/25894) ([Vladimir C](https://github.com/vdimir)).
* Add Map combinator for `Map` type. - Rename old `sum-, min-, max- Map` for mapped arrays to `sum-, min-, max- MappedArrays`. [#24539](https://github.com/ClickHouse/ClickHouse/pull/24539) ([Ildus Kurbangaliev](https://github.com/ildus)).
* Make reading from HTTP retriable. Closes [#29696](https://github.com/ClickHouse/ClickHouse/issues/29696). [#29894](https://github.com/ClickHouse/ClickHouse/pull/29894) ([Kseniia Sumarokova](https://github.com/kssenii)).
#### Experimental Feature
* `WINDOW VIEW` to enable stream processing in ClickHouse. [#8331](https://github.com/ClickHouse/ClickHouse/pull/8331) ([vxider](https://github.com/Vxider)).
* Drop support for using Ordinary databases with `MaterializedMySQL`. [#31292](https://github.com/ClickHouse/ClickHouse/pull/31292) ([Stig Bakken](https://github.com/stigsb)).
* Implement the commands BACKUP and RESTORE for the Log family. This feature is under development. [#30688](https://github.com/ClickHouse/ClickHouse/pull/30688) ([Vitaly Baranov](https://github.com/vitlibar)).
#### Performance Improvement
* Reduce memory usage when reading with `s3` / `url` / `hdfs` formats `Parquet`, `ORC`, `Arrow` (controlled by setting `input_format_allow_seeks`, enabled by default). Also add setting `remote_read_min_bytes_for_seek` to control seeks. Closes [#10461](https://github.com/ClickHouse/ClickHouse/issues/10461). Closes [#16857](https://github.com/ClickHouse/ClickHouse/issues/16857). [#30936](https://github.com/ClickHouse/ClickHouse/pull/30936) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Add optimizations for constant conditions in JOIN ON, ref [#26928](https://github.com/ClickHouse/ClickHouse/issues/26928). [#27021](https://github.com/ClickHouse/ClickHouse/pull/27021) ([Vladimir C](https://github.com/vdimir)).
* Support parallel formatting for all text formats, except `JSONEachRowWithProgress` and `PrettyCompactMonoBlock`. [#31489](https://github.com/ClickHouse/ClickHouse/pull/31489) ([Kruglov Pavel](https://github.com/Avogar)).
* Speed up count over nullable columns. [#31806](https://github.com/ClickHouse/ClickHouse/pull/31806) ([Raúl Marín](https://github.com/Algunenano)).
* Speed up `avg` and `sumCount` aggregate functions. [#31694](https://github.com/ClickHouse/ClickHouse/pull/31694) ([Raúl Marín](https://github.com/Algunenano)).
* Improve performance of JSON and XML output formats. [#31673](https://github.com/ClickHouse/ClickHouse/pull/31673) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Improve performance of syncing data to block device. This closes [#31181](https://github.com/ClickHouse/ClickHouse/issues/31181). [#31229](https://github.com/ClickHouse/ClickHouse/pull/31229) ([zhanglistar](https://github.com/zhanglistar)).
* Fixing query performance issue in `LiveView` tables. Fixes [#30831](https://github.com/ClickHouse/ClickHouse/issues/30831). [#31006](https://github.com/ClickHouse/ClickHouse/pull/31006) ([vzakaznikov](https://github.com/vzakaznikov)).
* Speed up query parsing. [#31949](https://github.com/ClickHouse/ClickHouse/pull/31949) ([Raúl Marín](https://github.com/Algunenano)).
* Allow to split `GraphiteMergeTree` rollup rules for plain/tagged metrics (optional `rule_type` field). [#25122](https://github.com/ClickHouse/ClickHouse/pull/25122) ([Michail Safronov](https://github.com/msaf1980)).
* Remove excessive `DESC TABLE` requests for `remote()` (in case of `remote('127.1', system.one)` (i.e. identifier as the db.table instead of string) there was excessive `DESC TABLE` request). [#32019](https://github.com/ClickHouse/ClickHouse/pull/32019) ([Azat Khuzhin](https://github.com/azat)).
* Optimize function `tupleElement` to reading of subcolumn with enabled setting `optimize_functions_to_subcolumns`. [#31261](https://github.com/ClickHouse/ClickHouse/pull/31261) ([Anton Popov](https://github.com/CurtizJ)).
* Optimize function `mapContains` to reading of subcolumn `key` with enabled settings `optimize_functions_to_subcolumns`. [#31218](https://github.com/ClickHouse/ClickHouse/pull/31218) ([Anton Popov](https://github.com/CurtizJ)).
* Add settings `merge_tree_min_rows_for_concurrent_read_for_remote_filesystem` and `merge_tree_min_bytes_for_concurrent_read_for_remote_filesystem`. [#30970](https://github.com/ClickHouse/ClickHouse/pull/30970) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Skipping mutations of different partitions in `StorageMergeTree`. [#21326](https://github.com/ClickHouse/ClickHouse/pull/21326) ([Vladimir Chebotarev](https://github.com/excitoon)).
#### Improvement
* Do not allow to drop a table or dictionary if some tables or dictionaries depend on it. [#30977](https://github.com/ClickHouse/ClickHouse/pull/30977) ([tavplubix](https://github.com/tavplubix)).
* Allow versioning of aggregate function states. Now we can introduce backward compatible changes in serialization format of aggregate function states. Closes [#12552](https://github.com/ClickHouse/ClickHouse/issues/12552). [#24820](https://github.com/ClickHouse/ClickHouse/pull/24820) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Support PostgreSQL style `ALTER MODIFY COLUMN` syntax. [#32003](https://github.com/ClickHouse/ClickHouse/pull/32003) ([SuperDJY](https://github.com/cmsxbc)).
* Added `update_field` support for `RangeHashedDictionary`, `ComplexKeyRangeHashedDictionary`. [#32185](https://github.com/ClickHouse/ClickHouse/pull/32185) ([Maksim Kita](https://github.com/kitaisreal)).
* The `murmurHash3_128` and `sipHash128` functions now accept an arbitrary number of arguments. This closes [#28774](https://github.com/ClickHouse/ClickHouse/issues/28774). [#28965](https://github.com/ClickHouse/ClickHouse/pull/28965) ([小路](https://github.com/nicelulu)).
* Support default expression for `HDFS` storage and optimize fetching when source is column oriented. [#32256](https://github.com/ClickHouse/ClickHouse/pull/32256) ([李扬](https://github.com/taiyang-li)).
* Improve the operation name of an opentelemetry span. [#32234](https://github.com/ClickHouse/ClickHouse/pull/32234) ([Frank Chen](https://github.com/FrankChen021)).
* Use `Content-Type: application/x-ndjson` (http://ndjson.org/) for output format `JSONEachRow`. [#32223](https://github.com/ClickHouse/ClickHouse/pull/32223) ([Dmitriy Dorofeev](https://github.com/deem0n)).
* Improve skipping unknown fields with quoted escaping rule in Template/CustomSeparated formats. Previously you could skip only quoted strings, now you can skip values with any type. [#32204](https://github.com/ClickHouse/ClickHouse/pull/32204) ([Kruglov Pavel](https://github.com/Avogar)).
* Now `clickhouse-keeper` refuses to start or apply configuration changes when they contain duplicated IDs or endpoints. Fixes [#31339](https://github.com/ClickHouse/ClickHouse/issues/31339). [#32121](https://github.com/ClickHouse/ClickHouse/pull/32121) ([alesapin](https://github.com/alesapin)).
* Set Content-Type in HTTP packets issued from URL engine. [#32113](https://github.com/ClickHouse/ClickHouse/pull/32113) ([Frank Chen](https://github.com/FrankChen021)).
* Return Content-Type as 'application/json' for `JSONEachRow` format if `output_format_json_array_of_rows` is enabled. [#32112](https://github.com/ClickHouse/ClickHouse/pull/32112) ([Frank Chen](https://github.com/FrankChen021)).
* Allow to parse `+` before `Float32`/`Float64` values. [#32079](https://github.com/ClickHouse/ClickHouse/pull/32079) ([Kruglov Pavel](https://github.com/Avogar)).
* Allow a user configured `hdfs_replication` parameter for `DiskHDFS` and `StorageHDFS`. Closes [#32039](https://github.com/ClickHouse/ClickHouse/issues/32039). [#32049](https://github.com/ClickHouse/ClickHouse/pull/32049) ([leosunli](https://github.com/leosunli)).
* Added ClickHouse `exception` and `exception_code` fields to opentelemetry span log. [#32040](https://github.com/ClickHouse/ClickHouse/pull/32040) ([Frank Chen](https://github.com/FrankChen021)).
* Improve opentelemetry span log duration - it was is zero at the query level if there is a query exception. [#32038](https://github.com/ClickHouse/ClickHouse/pull/32038) ([Frank Chen](https://github.com/FrankChen021)).
* Fix the issue that `LowCardinality` of `Int256` cannot be created. [#31832](https://github.com/ClickHouse/ClickHouse/pull/31832) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Recreate `system.*_log` tables in case of different engine/partition_by. [#31824](https://github.com/ClickHouse/ClickHouse/pull/31824) ([Azat Khuzhin](https://github.com/azat)).
* `MaterializedMySQL`: Fix issue with table named 'table'. [#31781](https://github.com/ClickHouse/ClickHouse/pull/31781) ([Håvard Kvålen](https://github.com/havardk)).
* ClickHouse dictionary source: support predefined connections. Closes [#31705](https://github.com/ClickHouse/ClickHouse/issues/31705). [#31749](https://github.com/ClickHouse/ClickHouse/pull/31749) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Allow to use predefined connections configuration for Kafka and RabbitMQ engines (the same way as for other integration table engines). [#31691](https://github.com/ClickHouse/ClickHouse/pull/31691) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Always re-render prompt while navigating history in clickhouse-client. This will improve usability of manipulating very long queries that don't fit on screen. [#31675](https://github.com/ClickHouse/ClickHouse/pull/31675) ([alexey-milovidov](https://github.com/alexey-milovidov)) (author: Amos Bird).
* Add key bindings for navigating through history (instead of lines/history). [#31641](https://github.com/ClickHouse/ClickHouse/pull/31641) ([Azat Khuzhin](https://github.com/azat)).
* Improve the `max_execution_time` checks. Fixed some cases when timeout checks do not happen and query could run too long. [#31636](https://github.com/ClickHouse/ClickHouse/pull/31636) ([Raúl Marín](https://github.com/Algunenano)).
* Better exception message when `users.xml` cannot be loaded due to bad password hash. This closes [#24126](https://github.com/ClickHouse/ClickHouse/issues/24126). [#31557](https://github.com/ClickHouse/ClickHouse/pull/31557) ([Vitaly Baranov](https://github.com/vitlibar)).
* Use shard and replica name from `Replicated` database arguments when expanding macros in `ReplicatedMergeTree` arguments if these macros are not defined in config. Closes [#31471](https://github.com/ClickHouse/ClickHouse/issues/31471). [#31488](https://github.com/ClickHouse/ClickHouse/pull/31488) ([tavplubix](https://github.com/tavplubix)).
* Better analysis for `min/max/count` projection. Now, with enabled `allow_experimental_projection_optimization`, virtual `min/max/count` projection can be used together with columns from partition key. [#31474](https://github.com/ClickHouse/ClickHouse/pull/31474) ([Amos Bird](https://github.com/amosbird)).
* Add `--pager` support for `clickhouse-local`. [#31457](https://github.com/ClickHouse/ClickHouse/pull/31457) ([Azat Khuzhin](https://github.com/azat)).
* Fix waiting of the editor during interactive query edition (`waitpid()` returns -1 on `SIGWINCH` and `EDITOR` and `clickhouse-local`/`clickhouse-client` works concurrently). [#31456](https://github.com/ClickHouse/ClickHouse/pull/31456) ([Azat Khuzhin](https://github.com/azat)).
* Throw an exception if there is some garbage after field in `JSONCompactStrings(EachRow)` format. [#31455](https://github.com/ClickHouse/ClickHouse/pull/31455) ([Kruglov Pavel](https://github.com/Avogar)).
* Default value of `http_send_timeout` and `http_receive_timeout` settings changed from 1800 (30 minutes) to 180 (3 minutes). [#31450](https://github.com/ClickHouse/ClickHouse/pull/31450) ([tavplubix](https://github.com/tavplubix)).
* `MaterializedMySQL` now handles `CREATE TABLE ... LIKE ...` DDL queries. [#31410](https://github.com/ClickHouse/ClickHouse/pull/31410) ([Stig Bakken](https://github.com/stigsb)).
* Return artificial create query when executing `show create table` on system's tables. [#31391](https://github.com/ClickHouse/ClickHouse/pull/31391) ([SuperDJY](https://github.com/cmsxbc)).
* Previously progress was shown only for `numbers` table function. Now for `numbers_mt` it is also shown. [#31318](https://github.com/ClickHouse/ClickHouse/pull/31318) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Initial user's roles are used now to find row policies, see [#31080](https://github.com/ClickHouse/ClickHouse/issues/31080). [#31262](https://github.com/ClickHouse/ClickHouse/pull/31262) ([Vitaly Baranov](https://github.com/vitlibar)).
* If some obsolete setting is changed - show warning in `system.warnings`. [#31252](https://github.com/ClickHouse/ClickHouse/pull/31252) ([tavplubix](https://github.com/tavplubix)).
* Improved backoff for background cleanup tasks in `MergeTree`. Settings `merge_tree_clear_old_temporary_directories_interval_seconds` and `merge_tree_clear_old_parts_interval_seconds` moved from users settings to merge tree settings. [#31180](https://github.com/ClickHouse/ClickHouse/pull/31180) ([tavplubix](https://github.com/tavplubix)).
* Now every replica will send to client only incremental information about profile events counters. [#31155](https://github.com/ClickHouse/ClickHouse/pull/31155) ([Dmitry Novik](https://github.com/novikd)). This makes `--hardware_utilization` option in `clickhouse-client` usable.
* Enable multiline editing in clickhouse-client by default. This addresses [#31121](https://github.com/ClickHouse/ClickHouse/issues/31121) . [#31123](https://github.com/ClickHouse/ClickHouse/pull/31123) ([Amos Bird](https://github.com/amosbird)).
* Function name normalization for `ALTER` queries. This helps avoid metadata mismatch between creating table with indices/projections and adding indices/projections via alter commands. This is a follow-up PR of https://github.com/ClickHouse/ClickHouse/pull/20174. Mark as improvements as there are no bug reports and the senario is somehow rare. [#31095](https://github.com/ClickHouse/ClickHouse/pull/31095) ([Amos Bird](https://github.com/amosbird)).
* Support `IF EXISTS` modifier for `RENAME DATABASE`/`TABLE`/`DICTIONARY` query. If this directive is used, one will not get an error if the DATABASE/TABLE/DICTIONARY to be renamed doesn't exist. [#31081](https://github.com/ClickHouse/ClickHouse/pull/31081) ([victorgao](https://github.com/kafka1991)).
* Cancel vertical merges when partition is dropped. This is a follow-up of https://github.com/ClickHouse/ClickHouse/pull/25684 and https://github.com/ClickHouse/ClickHouse/pull/30996. [#31057](https://github.com/ClickHouse/ClickHouse/pull/31057) ([Amos Bird](https://github.com/amosbird)).
* The local session inside a Clickhouse dictionary source won't send its events to the session log anymore. This fixes a possible deadlock (tsan alert) on shutdown. Also this PR fixes flaky `test_dictionaries_dependency_xml/`. [#31013](https://github.com/ClickHouse/ClickHouse/pull/31013) ([Vitaly Baranov](https://github.com/vitlibar)).
* Less locking in ALTER command. [#31010](https://github.com/ClickHouse/ClickHouse/pull/31010) ([Amos Bird](https://github.com/amosbird)).
* Fix `--verbose` option in clickhouse-local interactive mode and allow logging into file. [#30881](https://github.com/ClickHouse/ClickHouse/pull/30881) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Added `\l`, `\d`, `\c` commands in `clickhouse-client` like in MySQL and PostgreSQL. [#30876](https://github.com/ClickHouse/ClickHouse/pull/30876) ([Pavel Medvedev](https://github.com/pmed)).
* For clickhouse-local or clickhouse-client: if there is `--interactive` option with `--query` or `--queries-file`, then first execute them like in non-interactive and then start interactive mode. [#30851](https://github.com/ClickHouse/ClickHouse/pull/30851) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix possible "The local set of parts of X doesn't look like the set of parts in ZooKeeper" error (if DROP fails during removing znodes from zookeeper). [#30826](https://github.com/ClickHouse/ClickHouse/pull/30826) ([Azat Khuzhin](https://github.com/azat)).
* Avro format works against Kafka. Setting `output_format_avro_rows_in_file` added. [#30351](https://github.com/ClickHouse/ClickHouse/pull/30351) ([Ilya Golshtein](https://github.com/ilejn)).
* Allow to specify one or any number of PostgreSQL schemas for one `MaterializedPostgreSQL` database. Closes [#28901](https://github.com/ClickHouse/ClickHouse/issues/28901). Closes [#29324](https://github.com/ClickHouse/ClickHouse/issues/29324). [#28933](https://github.com/ClickHouse/ClickHouse/pull/28933) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Replaced default ports for clickhouse-keeper internal communication from 44444 to 9234. Fixes [#30879](https://github.com/ClickHouse/ClickHouse/issues/30879). [#31799](https://github.com/ClickHouse/ClickHouse/pull/31799) ([alesapin](https://github.com/alesapin)).
* Implement function transform with Decimal arguments. [#31839](https://github.com/ClickHouse/ClickHouse/pull/31839) ([李帅](https://github.com/loneylee)).
* Fix abort in debug server and `DB::Exception: std::out_of_range: basic_string` error in release server in case of bad hdfs url by adding additional check of hdfs url structure. [#31042](https://github.com/ClickHouse/ClickHouse/pull/31042) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix possible assert in `hdfs` table function/engine, add test. [#31036](https://github.com/ClickHouse/ClickHouse/pull/31036) ([Kruglov Pavel](https://github.com/Avogar)).
#### Bug Fixes
* Fix group by / order by / limit by aliases with positional arguments enabled. Closes [#31173](https://github.com/ClickHouse/ClickHouse/issues/31173). [#31741](https://github.com/ClickHouse/ClickHouse/pull/31741) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix usage of `Buffer` table engine with type `Map`. Fixes [#30546](https://github.com/ClickHouse/ClickHouse/issues/30546). [#31742](https://github.com/ClickHouse/ClickHouse/pull/31742) ([Anton Popov](https://github.com/CurtizJ)).
* Fix reading from `MergeTree` tables with enabled `use_uncompressed_cache`. [#31826](https://github.com/ClickHouse/ClickHouse/pull/31826) ([Anton Popov](https://github.com/CurtizJ)).
* Fixed the behavior when mutations that have nothing to do are stuck (with enabled setting `empty_result_for_aggregation_by_empty_set`). [#32358](https://github.com/ClickHouse/ClickHouse/pull/32358) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fix skipping columns while writing protobuf. This PR fixes [#31160](https://github.com/ClickHouse/ClickHouse/issues/31160), see the comment [#31160](https://github.com/ClickHouse/ClickHouse/issues/31160)#issuecomment-980595318. [#31988](https://github.com/ClickHouse/ClickHouse/pull/31988) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix bug when remove unneeded columns in subquery. If there is an aggregation function in query without group by, do not remove if it is unneeded. [#32289](https://github.com/ClickHouse/ClickHouse/pull/32289) ([dongyifeng](https://github.com/dyf6372)).
* Quota limit was not reached, but the limit was exceeded. This PR fixes [#31174](https://github.com/ClickHouse/ClickHouse/issues/31174). [#31337](https://github.com/ClickHouse/ClickHouse/pull/31337) ([sunny](https://github.com/sunny19930321)).
* Fix SHOW GRANTS when partial revokes are used. This PR fixes [#31138](https://github.com/ClickHouse/ClickHouse/issues/31138). [#31249](https://github.com/ClickHouse/ClickHouse/pull/31249) ([Vitaly Baranov](https://github.com/vitlibar)).
* Memory amount was incorrectly estimated when ClickHouse is run in containers with cgroup limits. [#31157](https://github.com/ClickHouse/ClickHouse/pull/31157) ([Pavel Medvedev](https://github.com/pmed)).
* Fix `ALTER ... MATERIALIZE COLUMN ...` queries in case when data type of default expression is not equal to the data type of column. [#32348](https://github.com/ClickHouse/ClickHouse/pull/32348) ([Anton Popov](https://github.com/CurtizJ)).
* Fixed crash with SIGFPE in aggregate function `avgWeighted` with `Decimal` argument. Fixes [#32053](https://github.com/ClickHouse/ClickHouse/issues/32053). [#32303](https://github.com/ClickHouse/ClickHouse/pull/32303) ([tavplubix](https://github.com/tavplubix)).
* Server might fail to start with `Cannot attach 1 tables due to cyclic dependencies` error if `Dictionary` table looks at XML-dictionary with the same name, it's fixed. Fixes [#31315](https://github.com/ClickHouse/ClickHouse/issues/31315). [#32288](https://github.com/ClickHouse/ClickHouse/pull/32288) ([tavplubix](https://github.com/tavplubix)).
* Fix parsing error while NaN deserializing for `Nullable(Float)` for `Quoted` escaping rule. [#32190](https://github.com/ClickHouse/ClickHouse/pull/32190) ([Kruglov Pavel](https://github.com/Avogar)).
* XML dictionaries: identifiers, used in table create query, can be qualified to `default_database` during upgrade to newer version. Closes [#31963](https://github.com/ClickHouse/ClickHouse/issues/31963). [#32187](https://github.com/ClickHouse/ClickHouse/pull/32187) ([Maksim Kita](https://github.com/kitaisreal)).
* Number of active replicas might be determined incorrectly when inserting with quorum if setting `replicated_can_become_leader` is disabled on some replicas. It's fixed. [#32157](https://github.com/ClickHouse/ClickHouse/pull/32157) ([tavplubix](https://github.com/tavplubix)).
* Dictionaries: fix cases when `{condition}` does not work for custom database queries. [#32117](https://github.com/ClickHouse/ClickHouse/pull/32117) ([Maksim Kita](https://github.com/kitaisreal)).
* Fix `CAST` from `Nullable` with `cast_keep_nullable` (`PARAMETER_OUT_OF_BOUND` error before for i.e. `toUInt32OrDefault(toNullable(toUInt32(1)))`). [#32080](https://github.com/ClickHouse/ClickHouse/pull/32080) ([Azat Khuzhin](https://github.com/azat)).
* Fix CREATE TABLE of Join Storage in some obscure cases. Close [#31680](https://github.com/ClickHouse/ClickHouse/issues/31680). [#32066](https://github.com/ClickHouse/ClickHouse/pull/32066) ([SuperDJY](https://github.com/cmsxbc)).
* Fixed `Directory ... already exists and is not empty` error when detaching part. [#32063](https://github.com/ClickHouse/ClickHouse/pull/32063) ([tavplubix](https://github.com/tavplubix)).
* `MaterializedMySQL` (experimental feature): Fix misinterpretation of `DECIMAL` data from MySQL. [#31990](https://github.com/ClickHouse/ClickHouse/pull/31990) ([Håvard Kvålen](https://github.com/havardk)).
* `FileLog` (experimental feature) engine unnesessary created meta data directory when create table failed. Fix [#31962](https://github.com/ClickHouse/ClickHouse/issues/31962). [#31967](https://github.com/ClickHouse/ClickHouse/pull/31967) ([flynn](https://github.com/ucasfl)).
* Some `GET_PART` entry might hang in replication queue if part is lost on all replicas and there are no other parts in the same partition. It's fixed in cases when partition key contains only columns of integer types or `Date[Time]`. Fixes [#31485](https://github.com/ClickHouse/ClickHouse/issues/31485). [#31887](https://github.com/ClickHouse/ClickHouse/pull/31887) ([tavplubix](https://github.com/tavplubix)).
* Fix functions `empty` and `notEmpty` with arguments of `UUID` type. Fixes [#31819](https://github.com/ClickHouse/ClickHouse/issues/31819). [#31883](https://github.com/ClickHouse/ClickHouse/pull/31883) ([Anton Popov](https://github.com/CurtizJ)).
* Change configuration path from `keeper_server.session_timeout_ms` to `keeper_server.coordination_settings.session_timeout_ms` when constructing a `KeeperTCPHandler`. Same with `operation_timeout`. [#31859](https://github.com/ClickHouse/ClickHouse/pull/31859) ([JackyWoo](https://github.com/JackyWoo)).
* Fix invalid cast of Nullable type when nullable primary key is used. (Nullable primary key is a discouraged feature - please do not use). This fixes [#31075](https://github.com/ClickHouse/ClickHouse/issues/31075). [#31823](https://github.com/ClickHouse/ClickHouse/pull/31823) ([Amos Bird](https://github.com/amosbird)).
* Fix crash in recursive UDF in SQL. Closes [#30856](https://github.com/ClickHouse/ClickHouse/issues/30856). [#31820](https://github.com/ClickHouse/ClickHouse/pull/31820) ([Maksim Kita](https://github.com/kitaisreal)).
* Fix crash when function `dictGet` with type is used for dictionary attribute when type is `Nullable`. Fixes [#30980](https://github.com/ClickHouse/ClickHouse/issues/30980). [#31800](https://github.com/ClickHouse/ClickHouse/pull/31800) ([Maksim Kita](https://github.com/kitaisreal)).
* Fix crash with empty result of ODBC query (with some ODBC drivers). Closes [#31465](https://github.com/ClickHouse/ClickHouse/issues/31465). [#31766](https://github.com/ClickHouse/ClickHouse/pull/31766) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix disabling query profiler (In case of `query_profiler_real_time_period_ns>0`/`query_profiler_cpu_time_period_ns>0` query profiler can stayed enabled even after query finished). [#31740](https://github.com/ClickHouse/ClickHouse/pull/31740) ([Azat Khuzhin](https://github.com/azat)).
* Fixed rare segfault on concurrent `ATTACH PARTITION` queries. [#31738](https://github.com/ClickHouse/ClickHouse/pull/31738) ([tavplubix](https://github.com/tavplubix)).
* Fix race in JSONEachRowWithProgress output format when data and lines with progress are mixed in output. [#31736](https://github.com/ClickHouse/ClickHouse/pull/31736) ([Kruglov Pavel](https://github.com/Avogar)).
* Fixed `there are no such cluster here` error on execution of `ON CLUSTER` query if specified cluster name is name of `Replicated` database. [#31723](https://github.com/ClickHouse/ClickHouse/pull/31723) ([tavplubix](https://github.com/tavplubix)).
* Fix exception on some of the applications of `decrypt` function on Nullable columns. This closes [#31662](https://github.com/ClickHouse/ClickHouse/issues/31662). This closes [#31426](https://github.com/ClickHouse/ClickHouse/issues/31426). [#31707](https://github.com/ClickHouse/ClickHouse/pull/31707) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fixed function ngrams when string contains UTF-8 characters. [#31706](https://github.com/ClickHouse/ClickHouse/pull/31706) ([yandd](https://github.com/yandd)).
* Settings `input_format_allow_errors_num` and `input_format_allow_errors_ratio` did not work for parsing of domain types, such as `IPv4`, it's fixed. Fixes [#31686](https://github.com/ClickHouse/ClickHouse/issues/31686). [#31697](https://github.com/ClickHouse/ClickHouse/pull/31697) ([tavplubix](https://github.com/tavplubix)).
* Fixed null pointer exception in `MATERIALIZE COLUMN`. [#31679](https://github.com/ClickHouse/ClickHouse/pull/31679) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* `RENAME TABLE` query worked incorrectly on attempt to rename an DDL dictionary in `Ordinary` database, it's fixed. [#31638](https://github.com/ClickHouse/ClickHouse/pull/31638) ([tavplubix](https://github.com/tavplubix)).
* Implement `sparkbar` aggregate function as it was intended, see: [#26175](https://github.com/ClickHouse/ClickHouse/issues/26175)#issuecomment-960353867, [comment](https://github.com/ClickHouse/ClickHouse/issues/26175#issuecomment-961155065). [#31624](https://github.com/ClickHouse/ClickHouse/pull/31624) ([小路](https://github.com/nicelulu)).
* Fix invalid generated JSON when only column names contain invalid UTF-8 sequences. [#31534](https://github.com/ClickHouse/ClickHouse/pull/31534) ([Kevin Michel](https://github.com/kmichel-aiven)).
* Disable `partial_merge_join_left_table_buffer_bytes` before bug in this optimization is fixed. See [#31009](https://github.com/ClickHouse/ClickHouse/issues/31009)). Remove redundant option `partial_merge_join_optimizations`. [#31528](https://github.com/ClickHouse/ClickHouse/pull/31528) ([Vladimir C](https://github.com/vdimir)).
* Fix progress for short `INSERT SELECT` queries. [#31510](https://github.com/ClickHouse/ClickHouse/pull/31510) ([Azat Khuzhin](https://github.com/azat)).
* Fix wrong behavior with group by and positional arguments. Closes [#31280](https://github.com/ClickHouse/ClickHouse/issues/31280)#issuecomment-968696186. [#31420](https://github.com/ClickHouse/ClickHouse/pull/31420) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Resolve `nullptr` in STS credentials provider for S3. [#31409](https://github.com/ClickHouse/ClickHouse/pull/31409) ([Vladimir Chebotarev](https://github.com/excitoon)).
* Remove `notLike` function from index analysis, because it was wrong. [#31169](https://github.com/ClickHouse/ClickHouse/pull/31169) ([sundyli](https://github.com/sundy-li)).
* Fix bug in Keeper which can lead to inability to start when some coordination logs was lost and we have more fresh snapshot than our latest log. [#31150](https://github.com/ClickHouse/ClickHouse/pull/31150) ([alesapin](https://github.com/alesapin)).
* Rewrite right distributed table in local join. solves [#25809](https://github.com/ClickHouse/ClickHouse/issues/25809). [#31105](https://github.com/ClickHouse/ClickHouse/pull/31105) ([abel-cheng](https://github.com/abel-cheng)).
* Fix `Merge` table with aliases and where (it did not work before at all). Closes [#28802](https://github.com/ClickHouse/ClickHouse/issues/28802). [#31044](https://github.com/ClickHouse/ClickHouse/pull/31044) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix JSON_VALUE/JSON_QUERY with quoted identifiers. This allows to have spaces in json path. Closes [#30971](https://github.com/ClickHouse/ClickHouse/issues/30971). [#31003](https://github.com/ClickHouse/ClickHouse/pull/31003) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Using `formatRow` function with not row-oriented formats led to segfault. Don't allow to use this function with such formats (because it doesn't make sense). [#31001](https://github.com/ClickHouse/ClickHouse/pull/31001) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix bug which broke select queries if they happened after dropping materialized view. Found in [#30691](https://github.com/ClickHouse/ClickHouse/issues/30691). [#30997](https://github.com/ClickHouse/ClickHouse/pull/30997) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Skip `max_partition_size_to_drop check` in case of ATTACH PARTITION ... FROM and MOVE PARTITION ... [#30995](https://github.com/ClickHouse/ClickHouse/pull/30995) ([Amr Alaa](https://github.com/amralaa-MSFT)).
* Fix some corner cases with `INTERSECT` and `EXCEPT` operators. Closes [#30803](https://github.com/ClickHouse/ClickHouse/issues/30803). [#30965](https://github.com/ClickHouse/ClickHouse/pull/30965) ([Kseniia Sumarokova](https://github.com/kssenii)).
#### Build/Testing/Packaging Improvement
* Fix incorrect filtering result on non-x86 builds. This closes [#31417](https://github.com/ClickHouse/ClickHouse/issues/31417). This closes [#31524](https://github.com/ClickHouse/ClickHouse/issues/31524). [#31574](https://github.com/ClickHouse/ClickHouse/pull/31574) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Make ClickHouse build fully reproducible (byte identical on different machines). This closes [#22113](https://github.com/ClickHouse/ClickHouse/issues/22113). [#31899](https://github.com/ClickHouse/ClickHouse/pull/31899) ([alexey-milovidov](https://github.com/alexey-milovidov)). Remove filesystem path to the build directory from binaries to enable reproducible builds. This needed for [#22113](https://github.com/ClickHouse/ClickHouse/issues/22113). [#31838](https://github.com/ClickHouse/ClickHouse/pull/31838) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Use our own CMakeLists for `zlib-ng`, `cassandra`, `mariadb-connector-c` and `xz`, `re2`, `sentry`, `gsasl`, `arrow`, `protobuf`. This is needed for [#20151](https://github.com/ClickHouse/ClickHouse/issues/20151). Part of [#9226](https://github.com/ClickHouse/ClickHouse/issues/9226). A small step towards removal of annoying trash from the build system. [#30599](https://github.com/ClickHouse/ClickHouse/pull/30599) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Hermetic builds: use fixed version of libc and make sure that no source or binary files from the host OS are using during build. This closes [#27133](https://github.com/ClickHouse/ClickHouse/issues/27133). This closes [#21435](https://github.com/ClickHouse/ClickHouse/issues/21435). This closes [#30462](https://github.com/ClickHouse/ClickHouse/issues/30462). [#30011](https://github.com/ClickHouse/ClickHouse/pull/30011) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Adding function `getFuzzerData()` to easily fuzz particular functions. This closes [#23227](https://github.com/ClickHouse/ClickHouse/issues/23227). [#27526](https://github.com/ClickHouse/ClickHouse/pull/27526) ([Alexey Boykov](https://github.com/mathalex)).
* More correct setting up capabilities inside Docker. [#31802](https://github.com/ClickHouse/ClickHouse/pull/31802) ([Constantine Peresypkin](https://github.com/pkit)).
* Enable clang `-fstrict-vtable-pointers`, `-fwhole-program-vtables` compile options. [#20151](https://github.com/ClickHouse/ClickHouse/pull/20151) ([Maksim Kita](https://github.com/kitaisreal)).
* Avoid downloading toolchain tarballs for cross-compiling for FreeBSD. [#31672](https://github.com/ClickHouse/ClickHouse/pull/31672) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Initial support for risc-v. See development/build-cross-riscv for quirks and build command that was tested. [#31309](https://github.com/ClickHouse/ClickHouse/pull/31309) ([Vladimir Smirnov](https://github.com/Civil)).
* Support compile in arm machine with parameter "-DENABLE_TESTS=OFF". [#31007](https://github.com/ClickHouse/ClickHouse/pull/31007) ([zhanghuajie](https://github.com/zhanghuajieHIT)).
### ClickHouse release v21.11, 2021-11-09
#### Backward Incompatible Change

3
CMakeLists.txt
View File

@ -447,7 +447,7 @@ if (MAKE_STATIC_LIBRARIES)
# It's disabled for ARM because otherwise ClickHouse cannot run on Android.
set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -fno-pie")
set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -fno-pie")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-no-pie")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -no-pie -Wl,-no-pie")
endif ()
else ()
set (CMAKE_POSITION_INDEPENDENT_CODE ON)
@ -508,6 +508,7 @@ include (cmake/find/hdfs3.cmake) # uses protobuf
include (cmake/find/poco.cmake)
include (cmake/find/curl.cmake)
include (cmake/find/s3.cmake)
include (cmake/find/blob_storage.cmake)
include (cmake/find/base64.cmake)
include (cmake/find/parquet.cmake)
include (cmake/find/simdjson.cmake)

8
CONTRIBUTING.md
View File

@ -2,7 +2,13 @@
ClickHouse is an open project, and you can contribute to it in many ways. You can help with ideas, code, or documentation. We appreciate any efforts that help us to make the project better.
Thank you.
Thank you!
## Legal Info
When you open your first pull-request to ClickHouse repo, a bot will invite you to accept ClickHouse Individual CLA (Contributor License Agreement). It is a simple few click process. For subsequent pull-requests the bot will check if you have already signed it and won't bother you again.
Optionally, to make contributions even more tight legally, your employer as a legal entity may want to sign a ClickHouse Corporate CLA with ClickHouse, Inc. If you're interested to do so, contact us at [legal@clickhouse.com](mailto:legal@clickhouse.com).
## Technical Info

24
base/base/CMakeLists.txt
View File

@ -24,8 +24,6 @@ set (SRCS
if (ENABLE_REPLXX)
list (APPEND SRCS ReplxxLineReader.cpp)
elseif (ENABLE_READLINE)
list (APPEND SRCS ReadlineLineReader.cpp)
endif ()
if (USE_DEBUG_HELPERS)
@ -52,28 +50,6 @@ if (OS_DARWIN AND NOT MAKE_STATIC_LIBRARIES)
target_link_libraries(common PUBLIC -Wl,-U,_inside_main)
endif()
# Allow explicit fallback to readline
if (NOT ENABLE_REPLXX AND ENABLE_READLINE)
message (STATUS "Attempt to fallback to readline explicitly")
set (READLINE_PATHS "/usr/local/opt/readline/lib")
# First try find custom lib for macos users (default lib without history support)
find_library (READLINE_LIB NAMES readline PATHS ${READLINE_PATHS} NO_DEFAULT_PATH)
if (NOT READLINE_LIB)
find_library (READLINE_LIB NAMES readline PATHS ${READLINE_PATHS})
endif ()
set(READLINE_INCLUDE_PATHS "/usr/local/opt/readline/include")
find_path (READLINE_INCLUDE_DIR NAMES readline/readline.h PATHS ${READLINE_INCLUDE_PATHS} NO_DEFAULT_PATH)
if (NOT READLINE_INCLUDE_DIR)
find_path (READLINE_INCLUDE_DIR NAMES readline/readline.h PATHS ${READLINE_INCLUDE_PATHS})
endif ()
if (READLINE_INCLUDE_DIR AND READLINE_LIB)
target_link_libraries(common PUBLIC ${READLINE_LIB})
target_compile_definitions(common PUBLIC USE_READLINE=1)
message (STATUS "Using readline: ${READLINE_INCLUDE_DIR} : ${READLINE_LIB}")
endif ()
endif ()
target_link_libraries (common
PUBLIC
${CITYHASH_LIBRARIES}

37
base/base/LineReader.cpp
View File

@ -10,16 +10,6 @@
#include <sys/types.h>
#ifdef OS_LINUX
/// We can detect if code is linked with one or another readline variants or open the library dynamically.
# include <dlfcn.h>
extern "C"
{
char * readline(const char *) __attribute__((__weak__));
char * (*readline_ptr)(const char *) = readline;
}
#endif
#ifdef HAS_RESERVED_IDENTIFIER
#pragma clang diagnostic ignored "-Wreserved-identifier"
#endif
@ -152,33 +142,6 @@ LineReader::InputStatus LineReader::readOneLine(const String & prompt)
{
input.clear();
#ifdef OS_LINUX
if (!readline_ptr)
{
for (const auto * name : {"libreadline.so", "libreadline.so.0", "libeditline.so", "libeditline.so.0"})
{
void * dl_handle = dlopen(name, RTLD_LAZY);
if (dl_handle)
{
readline_ptr = reinterpret_cast<char * (*)(const char *)>(dlsym(dl_handle, "readline"));
if (readline_ptr)
{
break;
}
}
}
}
/// Minimal support for readline
if (readline_ptr)
{
char * line_read = (*readline_ptr)(prompt.c_str());
if (!line_read)
return ABORT;
input = line_read;
}
else
#endif
{
std::cout << prompt;
std::getline(std::cin, input);

187
base/base/ReadlineLineReader.cpp
View File

@ -1,187 +0,0 @@
#include <base/ReadlineLineReader.h>
#include <base/errnoToString.h>
#include <base/scope_guard.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <iostream>
namespace
{
/// Trim ending whitespace inplace
void trim(String & s)
{
s.erase(std::find_if(s.rbegin(), s.rend(), [](int ch) { return !std::isspace(ch); }).base(), s.end());
}
}
static const LineReader::Suggest * suggest;
/// Points to current word to suggest.
static LineReader::Suggest::Words::const_iterator pos;
/// Points after the last possible match.
static LineReader::Suggest::Words::const_iterator end;
/// Set iterators to the matched range of words if any.
static void findRange(const char * prefix, size_t prefix_length)
{
std::string prefix_str(prefix);
if (auto completions = suggest->getCompletions(prefix_str, prefix_length))
std::tie(pos, end) = *completions;
}
/// Iterates through matched range.
static char * nextMatch()
{
if (pos >= end)
return nullptr;
/// readline will free memory by itself.
char * word = strdup(pos->c_str());
++pos;
return word;
}
static char * generate(const char * text, int state)
{
if (!suggest->ready)
return nullptr;
if (state == 0)
findRange(text, strlen(text));
/// Do not append whitespace after word. For unknown reason, rl_completion_append_character = '\0' does not work.
rl_completion_suppress_append = 1;
return nextMatch();
};
ReadlineLineReader::ReadlineLineReader(
const Suggest & suggest_, const String & history_file_path_, bool multiline_, Patterns extenders_, Patterns delimiters_)
: LineReader(history_file_path_, multiline_, std::move(extenders_), std::move(delimiters_))
{
suggest = &suggest_;
if (!history_file_path.empty())
{
int res = read_history(history_file_path.c_str());
if (res)
std::cerr << "Cannot read history from file " + history_file_path + ": "+ errnoToString(errno) << std::endl;
}
/// Added '.' to the default list. Because it is used to separate database and table.
rl_basic_word_break_characters = word_break_characters;
/// Not append whitespace after single suggestion. Because whitespace after function name is meaningless.
rl_completion_append_character = '\0';
rl_completion_entry_function = generate;
/// Install Ctrl+C signal handler that will be used in interactive mode.
if (rl_initialize())
throw std::runtime_error("Cannot initialize readline");
auto clear_prompt_or_exit = [](int)
{
/// This is signal safe.
ssize_t res = write(STDOUT_FILENO, "\n", 1);
/// Allow to quit client while query is in progress by pressing Ctrl+C twice.
/// (First press to Ctrl+C will try to cancel query by InterruptListener).
if (res == 1 && rl_line_buffer[0] && !RL_ISSTATE(RL_STATE_DONE))
{
rl_replace_line("", 0);
if (rl_forced_update_display())
_exit(0);
}
else
{
/// A little dirty, but we struggle to find better way to correctly
/// force readline to exit after returning from the signal handler.
_exit(0);
}
};
if (signal(SIGINT, clear_prompt_or_exit) == SIG_ERR)
throw std::runtime_error(std::string("Cannot set signal handler for readline: ") + errnoToString(errno));
rl_variable_bind("completion-ignore-case", "on");
// TODO: it doesn't work
// history_write_timestamps = 1;
}
ReadlineLineReader::~ReadlineLineReader()
{
}
LineReader::InputStatus ReadlineLineReader::readOneLine(const String & prompt)
{
input.clear();
const char* cinput = readline(prompt.c_str());
if (cinput == nullptr)
return (errno != EAGAIN) ? ABORT : RESET_LINE;
input = cinput;
trim(input);
return INPUT_LINE;
}
void ReadlineLineReader::addToHistory(const String & line)
{
add_history(line.c_str());
// Flush changes to the disk
// NOTE readline builds a buffer of all the lines to write, and write them in one syscall.
// Thus there is no need to lock the history file here.
write_history(history_file_path.c_str());
}
#if RL_VERSION_MAJOR >= 7
#define BRACK_PASTE_PREF "\033[200~"
#define BRACK_PASTE_SUFF "\033[201~"
#define BRACK_PASTE_LAST '~'
#define BRACK_PASTE_SLEN 6
/// This handler bypasses some unused macro/event checkings and remove trailing newlines before insertion.
static int clickhouse_rl_bracketed_paste_begin(int /* count */, int /* key */)
{
std::string buf;
buf.reserve(128);
RL_SETSTATE(RL_STATE_MOREINPUT);
SCOPE_EXIT(RL_UNSETSTATE(RL_STATE_MOREINPUT));
int c;
while ((c = rl_read_key()) >= 0)
{
if (c == '\r')
c = '\n';
buf.push_back(c);
if (buf.size() >= BRACK_PASTE_SLEN && c == BRACK_PASTE_LAST && buf.substr(buf.size() - BRACK_PASTE_SLEN) == BRACK_PASTE_SUFF)
{
buf.resize(buf.size() - BRACK_PASTE_SLEN);
break;
}
}
trim(buf);
return static_cast<size_t>(rl_insert_text(buf.c_str())) == buf.size() ? 0 : 1;
}
#endif
void ReadlineLineReader::enableBracketedPaste()
{
#if RL_VERSION_MAJOR >= 7
rl_variable_bind("enable-bracketed-paste", "on");
/// Use our bracketed paste handler to get better user experience. See comments above.
rl_bind_keyseq(BRACK_PASTE_PREF, clickhouse_rl_bracketed_paste_begin);
#endif
};

19
base/base/ReadlineLineReader.h
View File

@ -1,19 +0,0 @@
#pragma once
#include "LineReader.h"
#include <readline/readline.h>
#include <readline/history.h>
class ReadlineLineReader : public LineReader
{
public:
ReadlineLineReader(const Suggest & suggest, const String & history_file_path, bool multiline, Patterns extenders_, Patterns delimiters_);
~ReadlineLineReader() override;
void enableBracketedPaste() override;
private:
InputStatus readOneLine(const String & prompt) override;
void addToHistory(const String & line) override;
};

28
cmake/find/blob_storage.cmake Normal file
View File

@ -0,0 +1,28 @@
option(USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY
"Set to FALSE to use system Azure SDK instead of bundled (OFF currently not implemented)"
${ENABLE_LIBRARIES})
if (USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY)
set(USE_AZURE_BLOB_STORAGE 1)
set(AZURE_BLOB_STORAGE_LIBRARY azure_sdk)
endif()
if ((NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/azure/sdk"
OR NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/azure/cmake-modules")
AND USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY)
message (WARNING "submodule contrib/azure is missing. to fix try run: \n git submodule update --init")
set(USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY OFF)
set(USE_AZURE_BLOB_STORAGE 0)
endif ()
if (NOT USE_INTERNAL_SSL_LIBRARY AND USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY)
message (FATAL_ERROR "Currently Blob Storage support can be built only with internal SSL library")
endif()
if (NOT USE_INTERNAL_CURL AND USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY)
message (FATAL_ERROR "Currently Blob Storage support can be built only with internal curl library")
endif()
if (USE_AZURE_BLOB_STORAGE)
message (STATUS "Using Azure Blob Storage - ${USE_AZURE_BLOB_STORAGE}")
endif()

3
cmake/tools.cmake
View File

@ -91,6 +91,9 @@ endif ()
if (LINKER_NAME)
if (COMPILER_CLANG AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 12.0.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 12.0.0))
find_program (LLD_PATH NAMES ${LINKER_NAME})
if (NOT LLD_PATH)
message (FATAL_ERROR "Using linker ${LINKER_NAME} but can't find its path.")
endif ()
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --ld-path=${LLD_PATH}")
set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} --ld-path=${LLD_PATH}")
else ()

4
contrib/CMakeLists.txt vendored
View File

@ -249,6 +249,10 @@ endif()
# - sentry-native
add_subdirectory (curl-cmake)
if (USE_INTERNAL_AZURE_BLOB_STORAGE_LIBRARY)
add_subdirectory(azure-cmake)
endif()
if (USE_SENTRY)
add_subdirectory (sentry-native-cmake)
endif()

2
contrib/NuRaft vendored

@ -1 +1 @@
Subproject commit d10351f312c1ae1ca3fdda433693dfbef3acfece
Subproject commit bb69d48e0ee35c87a0f19e509a09a914f71f0cff

1
contrib/azure vendored Submodule

@ -0,0 +1 @@
Subproject commit ac4b763d4ca40122275f1497cbdc5451337461d9

71
contrib/azure-cmake/CMakeLists.txt Normal file
View File

@ -0,0 +1,71 @@
set(AZURE_DIR "${ClickHouse_SOURCE_DIR}/contrib/azure")
set(AZURE_SDK_LIBRARY_DIR "${AZURE_DIR}/sdk")
file(GLOB AZURE_SDK_CORE_SRC
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/cryptography/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/http/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/http/curl/*.hpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/http/curl/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/winhttp/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/io/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/src/private/*.hpp"
)
file(GLOB AZURE_SDK_IDENTITY_SRC
"${AZURE_SDK_LIBRARY_DIR}/identity/azure-identity/src/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/identity/azure-identity/src/private/*.hpp"
)
file(GLOB AZURE_SDK_STORAGE_COMMON_SRC
"${AZURE_SDK_LIBRARY_DIR}/storage/azure-storage-common/src/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/storage/azure-storage-common/src/private/*.cpp"
)
file(GLOB AZURE_SDK_STORAGE_BLOBS_SRC
"${AZURE_SDK_LIBRARY_DIR}/storage/azure-storage-blobs/src/*.cpp"
"${AZURE_SDK_LIBRARY_DIR}/storage/azure-storage-blobs/src/private/*.hpp"
)
file(GLOB AZURE_SDK_UNIFIED_SRC
${AZURE_SDK_CORE_SRC}
${AZURE_SDK_IDENTITY_SRC}
${AZURE_SDK_STORAGE_COMMON_SRC}
${AZURE_SDK_STORAGE_BLOBS_SRC}
)
set(AZURE_SDK_INCLUDES
"${AZURE_SDK_LIBRARY_DIR}/core/azure-core/inc/"
"${AZURE_SDK_LIBRARY_DIR}/identity/azure-identity/inc/"
"${AZURE_SDK_LIBRARY_DIR}/storage/azure-storage-common/inc/"
"${AZURE_SDK_LIBRARY_DIR}/storage/azure-storage-blobs/inc/"
)
include("${AZURE_DIR}/cmake-modules/AzureTransportAdapters.cmake")
add_library(azure_sdk ${AZURE_SDK_UNIFIED_SRC})
if (COMPILER_CLANG)
target_compile_options(azure_sdk PUBLIC
-Wno-deprecated-copy-dtor
-Wno-extra-semi
-Wno-suggest-destructor-override
-Wno-inconsistent-missing-destructor-override
-Wno-error=unknown-warning-option
-Wno-reserved-identifier
)
endif()
# Originally, on Windows azure-core is built with bcrypt and crypt32 by default
if (OPENSSL_FOUND)
target_link_libraries(azure_sdk PRIVATE ${OPENSSL_LIBRARIES})
endif()
# Originally, on Windows azure-core is built with winhttp by default
if (CURL_FOUND)
target_link_libraries(azure_sdk PRIVATE ${CURL_LIBRARY})
endif()
target_link_libraries(azure_sdk PRIVATE ${LIBXML2_LIBRARIES})
target_include_directories(azure_sdk PUBLIC ${AZURE_SDK_INCLUDES})

1
contrib/boringssl-cmake/CMakeLists.txt
View File

@ -639,6 +639,7 @@ add_library(
"${BORINGSSL_SOURCE_DIR}/decrepit/ssl/ssl_decrepit.c"
"${BORINGSSL_SOURCE_DIR}/decrepit/cfb/cfb.c"
"${BORINGSSL_SOURCE_DIR}/decrepit/bio/base64_bio.c"
)
add_executable(

2
contrib/libxml2-cmake/linux_x86_64/include/libxml/xmlversion.h
View File

@ -268,7 +268,7 @@ XMLPUBFUN void XMLCALL xmlCheckVersion(int version);
*
* Whether iconv support is available
*/
#if 1
#if 0
#define LIBXML_ICONV_ENABLED
#endif

2
contrib/poco vendored

@ -1 +1 @@
Subproject commit 258b9ba6cd245ff88e9346f75c43464c403f329d
Subproject commit 520a90e02e3e5cb90afeae1846d161dbc508a6f1

2
contrib/replxx-cmake/CMakeLists.txt
View File

@ -8,7 +8,7 @@ if (NOT ENABLE_REPLXX)
add_library(replxx INTERFACE)
target_compile_definitions(replxx INTERFACE USE_REPLXX=0)
message (STATUS "Not using replxx (Beware! Runtime fallback to readline is possible!)")
message (STATUS "Not using replxx")
return()
endif()

4
contrib/unixodbc-cmake/linux_x86_64/private/config.h
View File

@ -202,10 +202,10 @@
#define HAVE_READDIR 1
/* Add readline support */
#define HAVE_READLINE 1
/* #undef HAVE_READLINE */
/* Define to 1 if you have the <readline/history.h> header file. */
#define HAVE_READLINE_HISTORY_H 1
/* #undef HAVE_READLINE_HISTORY_H */
/* Use the scandir lib */
/* #undef HAVE_SCANDIR */

14
debian/rules vendored
View File

@ -45,6 +45,10 @@ ifdef DEB_CXX
ifeq ($(DEB_BUILD_GNU_TYPE),$(DEB_HOST_GNU_TYPE))
CC := $(DEB_CC)
CXX := $(DEB_CXX)
else ifeq (clang,$(findstring clang,$(DEB_CXX)))
# If we crosscompile with clang, it knows what to do
CC := $(DEB_CC)
CXX := $(DEB_CXX)
else
CC := $(DEB_HOST_GNU_TYPE)-$(DEB_CC)
CXX := $(DEB_HOST_GNU_TYPE)-$(DEB_CXX)
@ -77,10 +81,6 @@ else
THREADS_COUNT = 1
endif
ifneq ($(THREADS_COUNT),)
THREADS_COUNT:=-j$(THREADS_COUNT)
endif
%:
dh $@ $(DH_FLAGS) --buildsystem=cmake
@ -89,11 +89,11 @@ override_dh_auto_configure:
override_dh_auto_build:
# Fix for ninja. Do not add -O.
$(MAKE) $(THREADS_COUNT) -C $(BUILDDIR) $(MAKE_TARGET)
$(MAKE) -j$(THREADS_COUNT) -C $(BUILDDIR) $(MAKE_TARGET)
override_dh_auto_test:
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
cd $(BUILDDIR) && ctest $(THREADS_COUNT) -V
cd $(BUILDDIR) && ctest -j$(THREADS_COUNT) -V
endif
override_dh_clean:
@ -120,7 +120,7 @@ override_dh_install:
dh_install --list-missing --sourcedir=$(DESTDIR)
override_dh_auto_install:
env DESTDIR=$(DESTDIR) $(MAKE) $(THREADS_COUNT) -C $(BUILDDIR) install
env DESTDIR=$(DESTDIR) $(MAKE) -j$(THREADS_COUNT) -C $(BUILDDIR) install
override_dh_shlibdeps:
true # We depend only on libc and dh_shlibdeps gives us wrong (too strict) dependency.

32
docker/packager/binary/Dockerfile
View File

@ -24,41 +24,34 @@ RUN apt-get update \
&& apt-key add /tmp/llvm-snapshot.gpg.key \
&& export CODENAME="$(lsb_release --codename --short | tr 'A-Z' 'a-z')" \
&& echo "deb [trusted=yes] https://apt.llvm.org/${CODENAME}/ llvm-toolchain-${CODENAME}-${LLVM_VERSION} main" >> \
/etc/apt/sources.list
/etc/apt/sources.list \
&& apt-get clean
# initial packages
RUN apt-get update \
&& apt-get install \
bash \
fakeroot \
ccache \
curl \
software-properties-common \
--yes --no-install-recommends
RUN apt-get update \
&& apt-get install \
bash \
build-essential \
ccache \
clang-${LLVM_VERSION} \
clang-tidy-${LLVM_VERSION} \
cmake \
curl \
fakeroot \
gdb \
git \
gperf \
clang-${LLVM_VERSION} \
clang-tidy-${LLVM_VERSION} \
lld-${LLVM_VERSION} \
llvm-${LLVM_VERSION} \
llvm-${LLVM_VERSION}-dev \
libicu-dev \
libreadline-dev \
moreutils \
ninja-build \
pigz \
rename \
software-properties-common \
tzdata \
--yes --no-install-recommends
--yes --no-install-recommends \
&& apt-get clean
# This symlink required by gcc to find lld compiler
RUN ln -s /usr/bin/lld-${LLVM_VERSION} /usr/bin/ld.lld
@ -67,7 +60,7 @@ ENV CC=clang-${LLVM_VERSION}
ENV CXX=clang++-${LLVM_VERSION}
# libtapi is required to support .tbh format from recent MacOS SDKs
RUN git clone https://github.com/tpoechtrager/apple-libtapi.git \
RUN git clone --depth 1 https://github.com/tpoechtrager/apple-libtapi.git \
&& cd apple-libtapi \
&& INSTALLPREFIX=/cctools ./build.sh \
&& ./install.sh \
@ -75,7 +68,7 @@ RUN git clone https://github.com/tpoechtrager/apple-libtapi.git \
&& rm -rf apple-libtapi
# Build and install tools for cross-linking to Darwin (x86-64)
RUN git clone https://github.com/tpoechtrager/cctools-port.git \
RUN git clone --depth 1 https://github.com/tpoechtrager/cctools-port.git \
&& cd cctools-port/cctools \
&& ./configure --prefix=/cctools --with-libtapi=/cctools \
--target=x86_64-apple-darwin \
@ -84,7 +77,7 @@ RUN git clone https://github.com/tpoechtrager/cctools-port.git \
&& rm -rf cctools-port
# Build and install tools for cross-linking to Darwin (aarch64)
RUN git clone https://github.com/tpoechtrager/cctools-port.git \
RUN git clone --depth 1 https://github.com/tpoechtrager/cctools-port.git \
&& cd cctools-port/cctools \
&& ./configure --prefix=/cctools --with-libtapi=/cctools \
--target=aarch64-apple-darwin \
@ -98,7 +91,8 @@ RUN wget -nv https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacO
# NOTE: Seems like gcc-11 is too new for ubuntu20 repository
RUN add-apt-repository ppa:ubuntu-toolchain-r/test --yes \
&& apt-get update \
&& apt-get install gcc-11 g++-11 --yes
&& apt-get install gcc-11 g++-11 --yes \
&& apt-get clean
COPY build.sh /

10
docker/packager/deb/Dockerfile
View File

@ -64,8 +64,14 @@ RUN add-apt-repository ppa:ubuntu-toolchain-r/test --yes \
&& apt-get install gcc-11 g++-11 --yes
# This symlink required by gcc to find lld compiler
RUN ln -s /usr/bin/lld-${LLVM_VERSION} /usr/bin/ld.lld
# These symlinks are required:
# /usr/bin/ld.lld: by gcc to find lld compiler
# /usr/bin/aarch64-linux-gnu-obj*: for debug symbols stripping
RUN ln -s /usr/bin/lld-${LLVM_VERSION} /usr/bin/ld.lld \
&& ln -sf /usr/lib/llvm-${LLVM_VERSION}/bin/llvm-objcopy /usr/bin/aarch64-linux-gnu-strip \
&& ln -sf /usr/lib/llvm-${LLVM_VERSION}/bin/llvm-objcopy /usr/bin/aarch64-linux-gnu-objcopy \
&& ln -sf /usr/lib/llvm-${LLVM_VERSION}/bin/llvm-objdump /usr/bin/aarch64-linux-gnu-objdump
COPY build.sh /

10
docker/packager/packager
View File

@ -29,7 +29,13 @@ def pull_image(image_name):
return False
def build_image(image_name, filepath):
subprocess.check_call("docker build --network=host -t {} -f {} .".format(image_name, filepath), shell=True)
context = os.path.dirname(filepath)
subprocess.check_call(
"docker build --network=host -t {} -f {} {}".format(
image_name, filepath, context
),
shell=True,
)
def run_docker_image_with_env(image_name, output, env_variables, ch_root, ccache_dir, docker_image_version):
env_part = " -e ".join(env_variables)
@ -90,6 +96,7 @@ def parse_env_variables(build_type, compiler, sanitizer, package_type, image_typ
elif is_cross_arm:
cc = compiler[:-len(ARM_SUFFIX)]
cmake_flags.append("-DCMAKE_TOOLCHAIN_FILE=/build/cmake/linux/toolchain-aarch64.cmake")
result.append("DEB_ARCH_FLAG=-aarm64")
elif is_cross_freebsd:
cc = compiler[:-len(FREEBSD_SUFFIX)]
cmake_flags.append("-DCMAKE_TOOLCHAIN_FILE=/build/cmake/freebsd/toolchain-x86_64.cmake")
@ -98,6 +105,7 @@ def parse_env_variables(build_type, compiler, sanitizer, package_type, image_typ
cmake_flags.append("-DCMAKE_TOOLCHAIN_FILE=/build/cmake/linux/toolchain-ppc64le.cmake")
else:
cc = compiler
result.append("DEB_ARCH_FLAG=-aamd64")
cxx = cc.replace('gcc', 'g++').replace('clang', 'clang++')

13
docker/test/fasttest/run.sh
View File

@ -111,19 +111,6 @@ function start_server
fi
echo "ClickHouse server pid '$server_pid' started and responded"
echo "
set follow-fork-mode child
handle all noprint
handle SIGSEGV stop print
handle SIGBUS stop print
handle SIGABRT stop print
continue
thread apply all backtrace
continue
" > script.gdb
gdb -batch -command script.gdb -p "$server_pid" &
}
function clone_root

31
docker/test/fuzzer/run-fuzzer.sh
View File

@ -155,17 +155,34 @@ function fuzz
kill -0 $server_pid
# Set follow-fork-mode to parent, because we attach to clickhouse-server, not to watchdog
# and clickhouse-server can do fork-exec, for example, to run some bridge.
# Do not set nostop noprint for all signals, because some it may cause gdb to hang,
# explicitly ignore non-fatal signals that are used by server.
# Number of SIGRTMIN can be determined only in runtime.
RTMIN=$(kill -l SIGRTMIN)
echo "
set follow-fork-mode child
handle all noprint
handle SIGSEGV stop print
handle SIGBUS stop print
continue
thread apply all backtrace
set follow-fork-mode parent
handle SIGHUP nostop noprint pass
handle SIGINT nostop noprint pass
handle SIGQUIT nostop noprint pass
handle SIGPIPE nostop noprint pass
handle SIGTERM nostop noprint pass
handle SIGUSR1 nostop noprint pass
handle SIGUSR2 nostop noprint pass
handle SIG$RTMIN nostop noprint pass
info signals
continue
backtrace full
info locals
detach
quit
" > script.gdb
gdb -batch -command script.gdb -p $server_pid &
gdb -batch -command script.gdb -p $server_pid &
sleep 5
# gdb will send SIGSTOP, spend some time loading debug info and then send SIGCONT, wait for it (up to send_timeout, 300s)
time clickhouse-client --query "SELECT 'Connected to clickhouse-server after attaching gdb'" ||:
# Check connectivity after we attach gdb, because it might cause the server
# to freeze and the fuzzer will fail.

1
docker/test/integration/base/Dockerfile
View File

@ -7,7 +7,6 @@ RUN apt-get update \
&& env DEBIAN_FRONTEND=noninteractive apt-get -y install \
tzdata \
python3 \
libreadline-dev \
libicu-dev \
bsdutils \
gdb \

6
docker/test/integration/runner/Dockerfile
View File

@ -21,7 +21,6 @@ RUN apt-get update \
cgroupfs-mount \
python3-pip \
tzdata \
libreadline-dev \
libicu-dev \
bsdutils \
curl \
@ -76,7 +75,7 @@ RUN python3 -m pip install \
minio \
protobuf \
psycopg2-binary==2.8.6 \
pymongo \
pymongo==3.11.0 \
pytest \
pytest-timeout \
pytest-xdist \
@ -86,7 +85,8 @@ RUN python3 -m pip install \
tzlocal==2.1 \
urllib3 \
requests-kerberos \
pyhdfs
pyhdfs \
azure-storage-blob
COPY modprobe.sh /usr/local/bin/modprobe
COPY dockerd-entrypoint.sh /usr/local/bin/

13
docker/test/integration/runner/compose/docker_compose_azurite.yml Normal file
View File

@ -0,0 +1,13 @@
version: '2.3'
services:
azurite1:
image: mcr.microsoft.com/azure-storage/azurite
ports:
- "10000:10000"
volumes:
- data1-1:/data1
command: azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --debug /azurite_log
volumes:
data1-1:

8
docker/test/integration/runner/compose/docker_compose_mongo.yml
View File

@ -1,7 +1,7 @@
version: '2.3'
services:
mongo1:
image: mongo:3.6
image: mongo:5.0
restart: always
environment:
MONGO_INITDB_ROOT_USERNAME: root
@ -9,3 +9,9 @@ services:
ports:
- ${MONGO_EXTERNAL_PORT}:${MONGO_INTERNAL_PORT}
command: --profile=2 --verbose
mongo2:
image: mongo:5.0
restart: always
ports:
- "27018:27017"

85
docker/test/performance-comparison/compare.sh
View File

@ -193,7 +193,7 @@ function run_tests
then
# Run only explicitly specified tests, if any.
# shellcheck disable=SC2010
test_files=$(ls "$test_prefix" | grep "$CHPC_TEST_GREP" | xargs -I{} -n1 readlink -f "$test_prefix/{}")
test_files=($(ls "$test_prefix" | grep "$CHPC_TEST_GREP" | xargs -I{} -n1 readlink -f "$test_prefix/{}"))
elif [ "$PR_TO_TEST" -ne 0 ] \
&& [ "$(wc -l < changed-test-definitions.txt)" -gt 0 ] \
&& [ "$(wc -l < other-changed-files.txt)" -eq 0 ]
@ -201,10 +201,26 @@ function run_tests
# If only the perf tests were changed in the PR, we will run only these
# tests. The lists of changed files are prepared in entrypoint.sh because
# it has the repository.
test_files=$(sed "s/tests\/performance/${test_prefix//\//\\/}/" changed-test-definitions.txt)
test_files=($(sed "s/tests\/performance/${test_prefix//\//\\/}/" changed-test-definitions.txt))
else
# The default -- run all tests found in the test dir.
test_files=$(ls "$test_prefix"/*.xml)
test_files=($(ls "$test_prefix"/*.xml))
fi
# We split perf tests into multiple checks to make them faster
if [ -v CHPC_TEST_RUN_BY_HASH_TOTAL ]; then
# filter tests array in bash https://stackoverflow.com/a/40375567
for index in "${!test_files[@]}"; do
# sorry for this, just calculating hash(test_name) % total_tests_group == my_test_group_num
test_hash_result=$(echo test_files[$index] | perl -ne 'use Digest::MD5 qw(md5); print unpack('Q', md5($_)) % $ENV{CHPC_TEST_RUN_BY_HASH_TOTAL} == $ENV{CHPC_TEST_RUN_BY_HASH_NUM};')
# BTW, for some reason when hash(test_name) % total_tests_group != my_test_group_num perl outputs nothing, not zero
if [ "$test_hash_result" != "1" ]; then
# deleting element from array
unset -v 'test_files[$index]'
fi
done
# to have sequential indexes...
test_files=("${test_files[@]}")
fi
# For PRs w/o changes in test definitons, test only a subset of queries,
@ -212,21 +228,26 @@ function run_tests
# already set, keep those values.
#
# NOTE: too high CHPC_RUNS/CHPC_MAX_QUERIES may hit internal CI timeout.
if [ "$PR_TO_TEST" -ne 0 ] && [ "$(wc -l < changed-test-definitions.txt)" -eq 0 ]
then
CHPC_RUNS=${CHPC_RUNS:-7}
CHPC_MAX_QUERIES=${CHPC_MAX_QUERIES:-10}
else
CHPC_RUNS=${CHPC_RUNS:-13}
CHPC_MAX_QUERIES=${CHPC_MAX_QUERIES:-0}
fi
# NOTE: Currently we disabled complete run even for master branch
#if [ "$PR_TO_TEST" -ne 0 ] && [ "$(wc -l < changed-test-definitions.txt)" -eq 0 ]
#then
# CHPC_RUNS=${CHPC_RUNS:-7}
# CHPC_MAX_QUERIES=${CHPC_MAX_QUERIES:-10}
#else
# CHPC_RUNS=${CHPC_RUNS:-13}
# CHPC_MAX_QUERIES=${CHPC_MAX_QUERIES:-0}
#fi
CHPC_RUNS=${CHPC_RUNS:-7}
CHPC_MAX_QUERIES=${CHPC_MAX_QUERIES:-10}
export CHPC_RUNS
export CHPC_MAX_QUERIES
# Determine which concurrent benchmarks to run. For now, the only test
# we run as a concurrent benchmark is 'website'. Run it as benchmark if we
# are also going to run it as a normal test.
for test in $test_files; do echo "$test"; done | sed -n '/website/p' > benchmarks-to-run.txt
for test in ${test_files[@]}; do echo "$test"; done | sed -n '/website/p' > benchmarks-to-run.txt
# Delete old report files.
for x in {test-times,wall-clock-times}.tsv
@ -235,8 +256,8 @@ function run_tests
touch "$x"
done
# Randomize test order.
test_files=$(for f in $test_files; do echo "$f"; done | sort -R)
# Randomize test order. BTW, it's not an array no more.
test_files=$(for f in ${test_files[@]}; do echo "$f"; done | sort -R)
# Limit profiling time to 10 minutes, not to run for too long.
profile_seconds_left=600
@ -261,16 +282,24 @@ function run_tests
# Use awk because bash doesn't support floating point arithmetic.
profile_seconds=$(awk "BEGIN { print ($profile_seconds_left > 0 ? 10 : 0) }")
TIMEFORMAT=$(printf "$test_name\t%%3R\t%%3U\t%%3S\n")
# The grep is to filter out set -x output and keep only time output.
# The '2>&1 >/dev/null' redirects stderr to stdout, and discards stdout.
{ \
time "$script_dir/perf.py" --host localhost localhost --port $LEFT_SERVER_PORT $RIGHT_SERVER_PORT \
--runs "$CHPC_RUNS" --max-queries "$CHPC_MAX_QUERIES" \
--profile-seconds "$profile_seconds" \
-- "$test" > "$test_name-raw.tsv" 2> "$test_name-err.log" ; \
} 2>&1 >/dev/null | tee >(grep -v ^+ >> "wall-clock-times.tsv") \
|| echo "Test $test_name failed with error code $?" >> "$test_name-err.log"
(
set +x
argv=(
--host localhost localhost
--port "$LEFT_SERVER_PORT" "$RIGHT_SERVER_PORT"
--runs "$CHPC_RUNS"
--max-queries "$CHPC_MAX_QUERIES"
--profile-seconds "$profile_seconds"
"$test"
)
TIMEFORMAT=$(printf "$test_name\t%%3R\t%%3U\t%%3S\n")
# one more subshell to suppress trace output for "set +x"
(
time "$script_dir/perf.py" "${argv[@]}" > "$test_name-raw.tsv" 2> "$test_name-err.log"
) 2>>wall-clock-times.tsv >/dev/null \
|| echo "Test $test_name failed with error code $?" >> "$test_name-err.log"
) 2>/dev/null
profile_seconds_left=$(awk -F' ' \
'BEGIN { s = '$profile_seconds_left'; } /^profile-total/ { s -= $2 } END { print s }' \
@ -278,8 +307,6 @@ function run_tests
current_test=$((current_test + 1))
done
unset TIMEFORMAT
wait
}
@ -291,7 +318,7 @@ function get_profiles_watchdog
for pid in $(pgrep -f clickhouse)
do
gdb -p "$pid" --batch --ex "info proc all" --ex "thread apply all bt" --ex quit &> "$pid.gdb.log" &
sudo gdb -p "$pid" --batch --ex "info proc all" --ex "thread apply all bt" --ex quit &> "$pid.gdb.log" &
done
wait
@ -518,7 +545,9 @@ unset IFS
# all nodes.
numactl --show
numactl --cpunodebind=all --membind=all numactl --show
numactl --cpunodebind=all --membind=all parallel --joblog analyze/parallel-log.txt --null < analyze/commands.txt 2>> analyze/errors.log
# Use less jobs to avoid OOM. Some queries can consume 8+ GB of memory.
jobs_count=$(($(grep -c ^processor /proc/cpuinfo) / 3))
numactl --cpunodebind=all --membind=all parallel --jobs $jobs_count --joblog analyze/parallel-log.txt --null < analyze/commands.txt 2>> analyze/errors.log
clickhouse-local --query "
-- Join the metric names back to the metric statistics we've calculated, and make

22
docker/test/performance-comparison/download.sh
View File

@ -16,16 +16,28 @@ right_sha=$4
datasets=${CHPC_DATASETS-"hits1 hits10 hits100 values"}
declare -A dataset_paths
dataset_paths["hits10"]="https://s3.mds.yandex.net/clickhouse-private-datasets/hits_10m_single/partitions/hits_10m_single.tar"
dataset_paths["hits100"]="https://s3.mds.yandex.net/clickhouse-private-datasets/hits_100m_single/partitions/hits_100m_single.tar"
dataset_paths["hits1"]="https://clickhouse-datasets.s3.yandex.net/hits/partitions/hits_v1.tar"
dataset_paths["values"]="https://clickhouse-datasets.s3.yandex.net/values_with_expressions/partitions/test_values.tar"
if [[ $S3_URL == *"s3.amazonaws.com"* ]]; then
dataset_paths["hits10"]="https://clickhouse-private-datasets.s3.amazonaws.com/hits_10m_single/partitions/hits_10m_single.tar"
dataset_paths["hits100"]="https://clickhouse-private-datasets.s3.amazonaws.com/hits_100m_single/partitions/hits_100m_single.tar"
dataset_paths["hits1"]="https://clickhouse-datasets.s3.amazonaws.com/hits/partitions/hits_v1.tar"
dataset_paths["values"]="https://clickhouse-datasets.s3.amazonaws.com/values_with_expressions/partitions/test_values.tar"
else
dataset_paths["hits10"]="https://s3.mds.yandex.net/clickhouse-private-datasets/hits_10m_single/partitions/hits_10m_single.tar"
dataset_paths["hits100"]="https://s3.mds.yandex.net/clickhouse-private-datasets/hits_100m_single/partitions/hits_100m_single.tar"
dataset_paths["hits1"]="https://clickhouse-datasets.s3.yandex.net/hits/partitions/hits_v1.tar"
dataset_paths["values"]="https://clickhouse-datasets.s3.yandex.net/values_with_expressions/partitions/test_values.tar"
fi
function download
{
# Historically there were various paths for the performance test package.
# Test all of them.
for path in "https://clickhouse-builds.s3.yandex.net/$left_pr/$left_sha/"{,clickhouse_build_check/}"performance/performance.tgz"
declare -a urls_to_try=("https://s3.amazonaws.com/clickhouse-builds/$left_pr/$left_sha/performance/performance.tgz"
"https://clickhouse-builds.s3.yandex.net/$left_pr/$left_sha/clickhouse_build_check/performance/performance.tgz"
)
for path in "${urls_to_try[@]}"
do
if curl --fail --head "$path"
then

27
docker/test/performance-comparison/entrypoint.sh
View File

@ -4,6 +4,13 @@ set -ex
CHPC_CHECK_START_TIMESTAMP="$(date +%s)"
export CHPC_CHECK_START_TIMESTAMP
S3_URL=${S3_URL:="https://clickhouse-builds.s3.yandex.net"}
COMMON_BUILD_PREFIX="/clickhouse_build_check"
if [[ $S3_URL == *"s3.amazonaws.com"* ]]; then
COMMON_BUILD_PREFIX=""
fi
# Use the packaged repository to find the revision we will compare to.
function find_reference_sha
{
@ -43,9 +50,12 @@ function find_reference_sha
# Historically there were various path for the performance test package,
# test all of them.
unset found
for path in "https://clickhouse-builds.s3.yandex.net/0/$REF_SHA/"{,clickhouse_build_check/}"performance/performance.tgz"
declare -a urls_to_try=("https://s3.amazonaws.com/clickhouse-builds/0/$REF_SHA/performance/performance.tgz"
"https://clickhouse-builds.s3.yandex.net/0/$REF_SHA/clickhouse_build_check/performance/performance.tgz"
)
for path in "${urls_to_try[@]}"
do
if curl --fail --head "$path"
if curl --fail --retry 5 --retry-delay 1 --retry-max-time 15 --head "$path"
then
found="$path"
break
@ -65,14 +75,11 @@ chmod 777 workspace output
cd workspace
# Download the package for the version we are going to test
for path in "https://clickhouse-builds.s3.yandex.net/$PR_TO_TEST/$SHA_TO_TEST/"{,clickhouse_build_check/}"performance/performance.tgz"
do
if curl --fail --head "$path"
then
right_path="$path"
fi
done
# Download the package for the version we are going to test.
if curl --fail --retry 5 --retry-delay 1 --retry-max-time 15 --head "$S3_URL/$PR_TO_TEST/$SHA_TO_TEST$COMMON_BUILD_PREFIX/performance/performance.tgz"
then
right_path="$S3_URL/$PR_TO_TEST/$SHA_TO_TEST$COMMON_BUILD_PREFIX/performance/performance.tgz"
fi
mkdir right
wget -nv -nd -c "$right_path" -O- | tar -C right --strip-components=1 -zxv

9
docker/test/performance-comparison/perf.py
View File

@ -45,6 +45,7 @@ parser.add_argument('--runs', type=int, default=1, help='Number of query runs pe
parser.add_argument('--max-queries', type=int, default=None, help='Test no more than this number of queries, chosen at random.')
parser.add_argument('--queries-to-run', nargs='*', type=int, default=None, help='Space-separated list of indexes of queries to test.')
parser.add_argument('--max-query-seconds', type=int, default=15, help='For how many seconds at most a query is allowed to run. The script finishes with error if this time is exceeded.')
parser.add_argument('--prewarm-max-query-seconds', type=int, default=180, help='For how many seconds at most a prewarm (cold storage) query is allowed to run. The script finishes with error if this time is exceeded.')
parser.add_argument('--profile-seconds', type=int, default=0, help='For how many seconds to profile a query for which the performance has changed.')
parser.add_argument('--long', action='store_true', help='Do not skip the tests tagged as long.')
parser.add_argument('--print-queries', action='store_true', help='Print test queries and exit.')
@ -284,7 +285,7 @@ for query_index in queries_to_run:
# it makes the results unstable.
res = c.execute(q, query_id = prewarm_id,
settings = {
'max_execution_time': args.max_query_seconds,
'max_execution_time': args.prewarm_max_query_seconds,
'query_profiler_real_time_period_ns': 10000000,
'memory_profiler_step': '4Mi',
})
@ -354,11 +355,9 @@ for query_index in queries_to_run:
print(f'query\t{query_index}\t{run_id}\t{conn_index}\t{elapsed}')
if elapsed > args.max_query_seconds:
# Stop processing pathologically slow queries, to avoid timing out
# the entire test task. This shouldn't really happen, so we don't
# need much handling for this case and can just exit.
# Do not stop processing pathologically slow queries,
# since this may hide errors in other queries.
print(f'The query no. {query_index} is taking too long to run ({elapsed} s)', file=sys.stderr)
exit(2)
# Be careful with the counter, after this line it's the next iteration
# already.

7
docker/test/stateful/run.sh
View File

@ -123,7 +123,12 @@ function run_tests()
export -f run_tests
timeout "$MAX_RUN_TIME" bash -c run_tests ||:
./process_functional_tests_result.py || echo -e "failure\tCannot parse results" > /test_output/check_status.tsv
echo "Files in current directory"
ls -la ./
echo "Files in root directory"
ls -la /
/process_functional_tests_result.py || echo -e "failure\tCannot parse results" > /test_output/check_status.tsv
grep -Fa "Fatal" /var/log/clickhouse-server/clickhouse-server.log ||:

1
docker/test/stateless/Dockerfile
View File

@ -49,7 +49,6 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
ENV NUM_TRIES=1
ENV MAX_RUN_TIME=0
# Download Minio-related binaries
RUN wget 'https://dl.min.io/server/minio/release/linux-amd64/minio' \
&& chmod +x ./minio \

14
docker/test/stateless/run.sh
View File

@ -96,6 +96,13 @@ function run_tests()
ADDITIONAL_OPTIONS+=('8')
fi
if [[ -n "$RUN_BY_HASH_NUM" ]] && [[ -n "$RUN_BY_HASH_TOTAL" ]]; then
ADDITIONAL_OPTIONS+=('--run-by-hash-num')
ADDITIONAL_OPTIONS+=("$RUN_BY_HASH_NUM")
ADDITIONAL_OPTIONS+=('--run-by-hash-total')
ADDITIONAL_OPTIONS+=("$RUN_BY_HASH_TOTAL")
fi
set +e
clickhouse-test --testname --shard --zookeeper --check-zookeeper-session --hung-check --print-time \
--test-runs "$NUM_TRIES" "${ADDITIONAL_OPTIONS[@]}" 2>&1 \
@ -108,7 +115,12 @@ export -f run_tests
timeout "$MAX_RUN_TIME" bash -c run_tests ||:
./process_functional_tests_result.py || echo -e "failure\tCannot parse results" > /test_output/check_status.tsv
echo "Files in current directory"
ls -la ./
echo "Files in root directory"
ls -la /
/process_functional_tests_result.py || echo -e "failure\tCannot parse results" > /test_output/check_status.tsv
clickhouse-client -q "system flush logs" ||:

33
docker/test/stress/run.sh
View File

@ -1,6 +1,7 @@
#!/bin/bash
# shellcheck disable=SC2094
# shellcheck disable=SC2086
# shellcheck disable=SC2024
set -x
@ -127,14 +128,26 @@ function start()
counter=$((counter + 1))
done
# Set follow-fork-mode to parent, because we attach to clickhouse-server, not to watchdog
# and clickhouse-server can do fork-exec, for example, to run some bridge.
# Do not set nostop noprint for all signals, because some it may cause gdb to hang,
# explicitly ignore non-fatal signals that are used by server.
# Number of SIGRTMIN can be determined only in runtime.
RTMIN=$(kill -l SIGRTMIN)
echo "
set follow-fork-mode child
handle all noprint
handle SIGSEGV stop print
handle SIGBUS stop print
handle SIGABRT stop print
set follow-fork-mode parent
handle SIGHUP nostop noprint pass
handle SIGINT nostop noprint pass
handle SIGQUIT nostop noprint pass
handle SIGPIPE nostop noprint pass
handle SIGTERM nostop noprint pass
handle SIGUSR1 nostop noprint pass
handle SIGUSR2 nostop noprint pass
handle SIG$RTMIN nostop noprint pass
info signals
continue
thread apply all backtrace
backtrace full
info locals
detach
quit
" > script.gdb
@ -142,7 +155,10 @@ quit
# FIXME Hung check may work incorrectly because of attached gdb
# 1. False positives are possible
# 2. We cannot attach another gdb to get stacktraces if some queries hung
gdb -batch -command script.gdb -p "$(cat /var/run/clickhouse-server/clickhouse-server.pid)" >> /test_output/gdb.log &
gdb -batch -command script.gdb -p "$(cat /var/run/clickhouse-server/clickhouse-server.pid)" | ts '%Y-%m-%d %H:%M:%S' >> /test_output/gdb.log &
sleep 5
# gdb will send SIGSTOP, spend some time loading debug info and then send SIGCONT, wait for it (up to send_timeout, 300s)
time clickhouse-client --query "SELECT 'Connected to clickhouse-server after attaching gdb'" ||:
}
configure
@ -213,6 +229,9 @@ zgrep -Fa " <Fatal> " /var/log/clickhouse-server/clickhouse-server.log* > /dev/n
zgrep -Fa "########################################" /test_output/* > /dev/null \
&& echo -e 'Killed by signal (output files)\tFAIL' >> /test_output/test_results.tsv
zgrep -Fa " received signal " /test_output/gdb.log > /dev/null \
&& echo -e 'Found signal in gdb.log\tFAIL' >> /test_output/test_results.tsv
# Put logs into /test_output/
for log_file in /var/log/clickhouse-server/clickhouse-server.log*
do

1
docker/test/testflows/runner/Dockerfile
View File

@ -21,7 +21,6 @@ RUN apt-get update \
cgroupfs-mount \
python3-pip \
tzdata \
libreadline-dev \
libicu-dev \
bsdutils \
curl \

79
docs/en/engines/database-engines/materialized-mysql.md
View File

@ -17,6 +17,7 @@ ClickHouse server works as MySQL replica. It reads binlog and performs DDL and D
``` sql
CREATE DATABASE [IF NOT EXISTS] db_name [ON CLUSTER cluster]
ENGINE = MaterializedMySQL('host:port', ['database' | database], 'user', 'password') [SETTINGS ...]
[TABLE OVERRIDE table1 (...), TABLE OVERRIDE table2 (...)]
```
**Engine Parameters**
@ -109,15 +110,19 @@ MySQL DDL queries are converted into the corresponding ClickHouse DDL queries ([
- MySQL `DELETE` query is converted into `INSERT` with `_sign=-1`.
- MySQL `UPDATE` query is converted into `INSERT` with `_sign=-1` and `INSERT` with `_sign=1`.
- MySQL `UPDATE` query is converted into `INSERT` with `_sign=-1` and `INSERT` with `_sign=1` if the primary key has been changed, or
`INSERT` with `_sign=1` if not.
### Selecting from MaterializedMySQL Tables {#select}
`SELECT` query from `MaterializedMySQL` tables has some specifics:
- If `_version` is not specified in the `SELECT` query, [FINAL](../../sql-reference/statements/select/from.md#select-from-final) modifier is used. So only rows with `MAX(_version)` are selected.
- If `_version` is not specified in the `SELECT` query, the
[FINAL](../../sql-reference/statements/select/from.md#select-from-final) modifier is used, so only rows with
`MAX(_version)` are returned for each primary key value.
- If `_sign` is not specified in the `SELECT` query, `WHERE _sign=1` is used by default. So the deleted rows are not included into the result set.
- If `_sign` is not specified in the `SELECT` query, `WHERE _sign=1` is used by default. So the deleted rows are not
included into the result set.
- The result includes columns comments in case they exist in MySQL database tables.
@ -125,15 +130,77 @@ MySQL DDL queries are converted into the corresponding ClickHouse DDL queries ([
MySQL `PRIMARY KEY` and `INDEX` clauses are converted into `ORDER BY` tuples in ClickHouse tables.
ClickHouse has only one physical order, which is determined by `ORDER BY` clause. To create a new physical order, use [materialized views](../../sql-reference/statements/create/view.md#materialized).
ClickHouse has only one physical order, which is determined by `ORDER BY` clause. To create a new physical order, use
[materialized views](../../sql-reference/statements/create/view.md#materialized).
**Notes**
- Rows with `_sign=-1` are not deleted physically from the tables.
- Cascade `UPDATE/DELETE` queries are not supported by the `MaterializedMySQL` engine.
- Cascade `UPDATE/DELETE` queries are not supported by the `MaterializedMySQL` engine, as they are not visible in the
MySQL binlog.
- Replication can be easily broken.
- Manual operations on database and tables are forbidden.
- `MaterializedMySQL` is influenced by [optimize_on_insert](../../operations/settings/settings.md#optimize-on-insert) setting. The data is merged in the corresponding table in the `MaterializedMySQL` database when a table in the MySQL server changes.
- `MaterializedMySQL` is affected by the [optimize_on_insert](../../operations/settings/settings.md#optimize-on-insert)
setting. Data is merged in the corresponding table in the `MaterializedMySQL` database when a table in the MySQL
server changes.
### Table Overrides {#table-overrides}
Table overrides can be used to customize the ClickHouse DDL queries, allowing you to make schema optimizations for your
application. This is especially useful for controlling partitioning, which is important for the overall performance of
MaterializedMySQL.
```sql
CREATE DATABASE db_name ENGINE = MaterializedMySQL(...)
[SETTINGS ...]
[TABLE OVERRIDE table_name (
[COLUMNS (
[name1 [type1] [DEFAULT|MATERIALIZED|ALIAS expr1] [TTL expr1], ...]
[INDEX index_name1 expr1 TYPE type1(...) GRANULARITY value1, ...]
[PROJECTION projection_name_1 (SELECT <COLUMN LIST EXPR> [GROUP BY] [ORDER BY]), ...]
)]
[ORDER BY expr]
[PRIMARY KEY expr]
[PARTITION BY expr]
[SAMPLE BY expr]
[TTL expr]
), ...]
```
Example:
```sql
CREATE DATABASE db_name ENGINE = MaterializedMySQL(...)
TABLE OVERRIDE table1 (
COLUMNS (
userid UUID,
category LowCardinality(String),
timestamp DateTime CODEC(Delta, Default)
)
PARTITION BY toYear(timestamp)
),
TABLE OVERRIDE table2 (
COLUMNS (
ip_hash UInt32 MATERIALIZED xxHash32(client_ip),
client_ip String TTL created + INTERVAL 72 HOUR
)
SAMPLE BY ip_hash
)
```
The `COLUMNS` list is sparse; it contains only modified or extra (MATERIALIZED or ALIAS) columns. Modified columns with
a different type must be assignable from the original type. There is currently no validation of this or similar issues
when the `CREATE DATABASE` query executes, so extra care needs to be taken.
You may specify overrides for tables that do not exist yet.
!!! note "Warning"
It is easy to break replication with TABLE OVERRIDEs if not used with care. For example:
* If a column is added with a table override, but then later added to the source MySQL table, the converted ALTER TABLE
query in ClickHouse will fail because the column already exists.
* It is currently possible to add overrides that reference nullable columns where not-nullable are required, such as in
`ORDER BY` or `PARTITION BY`.
## Examples of Use {#examples-of-use}

38
docs/en/engines/table-engines/integrations/hdfs.md
View File

@ -5,8 +5,7 @@ toc_title: HDFS
# HDFS {#table_engines-hdfs}
This engine provides integration with [Apache Hadoop](https://en.wikipedia.org/wiki/Apache_Hadoop) ecosystem by allowing to manage data on [HDFS](https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html) via ClickHouse. This engine is similar
to the [File](../../../engines/table-engines/special/file.md#table_engines-file) and [URL](../../../engines/table-engines/special/url.md#table_engines-url) engines, but provides Hadoop-specific features.
This engine provides integration with the [Apache Hadoop](https://en.wikipedia.org/wiki/Apache_Hadoop) ecosystem by allowing to manage data on [HDFS](https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html) via ClickHouse. This engine is similar to the [File](../../../engines/table-engines/special/file.md#table_engines-file) and [URL](../../../engines/table-engines/special/url.md#table_engines-url) engines, but provides Hadoop-specific features.
## Usage {#usage}
@ -14,12 +13,13 @@ to the [File](../../../engines/table-engines/special/file.md#table_engines-file)
ENGINE = HDFS(URI, format)
```
The `URI` parameter is the whole file URI in HDFS.
The `format` parameter specifies one of the available file formats. To perform
**Engine Parameters**
- `URI` - whole file URI in HDFS. The path part of `URI` may contain globs. In this case the table would be readonly.
- `format` - specifies one of the available file formats. To perform
`SELECT` queries, the format must be supported for input, and to perform
`INSERT` queries – for output. The available formats are listed in the
[Formats](../../../interfaces/formats.md#formats) section.
The path part of `URI` may contain globs. In this case the table would be readonly.
**Example:**
@ -71,12 +71,12 @@ Constructions with `{}` are similar to the [remote](../../../sql-reference/table
1. Suppose we have several files in TSV format with the following URIs on HDFS:
- 'hdfs://hdfs1:9000/some_dir/some_file_1'
- 'hdfs://hdfs1:9000/some_dir/some_file_2'
- 'hdfs://hdfs1:9000/some_dir/some_file_3'
- 'hdfs://hdfs1:9000/another_dir/some_file_1'
- 'hdfs://hdfs1:9000/another_dir/some_file_2'
- 'hdfs://hdfs1:9000/another_dir/some_file_3'
- 'hdfs://hdfs1:9000/some_dir/some_file_1'
- 'hdfs://hdfs1:9000/some_dir/some_file_2'
- 'hdfs://hdfs1:9000/some_dir/some_file_3'
- 'hdfs://hdfs1:9000/another_dir/some_file_1'
- 'hdfs://hdfs1:9000/another_dir/some_file_2'
- 'hdfs://hdfs1:9000/another_dir/some_file_3'
1. There are several ways to make a table consisting of all six files:
@ -132,6 +132,7 @@ Similar to GraphiteMergeTree, the HDFS engine supports extended configuration us
| **parameter** | **default value** |
| - | - |
| rpc\_client\_connect\_tcpnodelay | true |
| dfs\_client\_read\_shortcircuit | true |
| output\_replace-datanode-on-failure | true |
@ -181,25 +182,26 @@ Similar to GraphiteMergeTree, the HDFS engine supports extended configuration us
#### ClickHouse extras {#clickhouse-extras}
| **parameter** | **default value** |
| - | - |
|hadoop\_kerberos\_keytab | "" |
|hadoop\_kerberos\_principal | "" |
|hadoop\_kerberos\_kinit\_command | kinit |
|libhdfs3\_conf | "" |
### Limitations {#limitations}
* hadoop\_security\_kerberos\_ticket\_cache\_path and libhdfs3\_conf can be global only, not user specific
* `hadoop_security_kerberos_ticket_cache_path` and `libhdfs3_conf` can be global only, not user specific
## Kerberos support {#kerberos-support}
If hadoop\_security\_authentication parameter has value 'kerberos', ClickHouse authentifies via Kerberos facility.
Parameters [here](#clickhouse-extras) and hadoop\_security\_kerberos\_ticket\_cache\_path may be of help.
If the `hadoop_security_authentication` parameter has the value `kerberos`, ClickHouse authenticates via Kerberos.
Parameters are [here](#clickhouse-extras) and `hadoop_security_kerberos_ticket_cache_path` may be of help.
Note that due to libhdfs3 limitations only old-fashioned approach is supported,
datanode communications are not secured by SASL (HADOOP\_SECURE\_DN\_USER is a reliable indicator of such
security approach). Use tests/integration/test\_storage\_kerberized\_hdfs/hdfs_configs/bootstrap.sh for reference.
datanode communications are not secured by SASL (`HADOOP_SECURE_DN_USER` is a reliable indicator of such
security approach). Use `tests/integration/test_storage_kerberized_hdfs/hdfs_configs/bootstrap.sh` for reference.
If hadoop\_kerberos\_keytab, hadoop\_kerberos\_principal or hadoop\_kerberos\_kinit\_command is specified, kinit will be invoked. hadoop\_kerberos\_keytab and hadoop\_kerberos\_principal are mandatory in this case. kinit tool and krb5 configuration files are required.
If `hadoop_kerberos_keytab`, `hadoop_kerberos_principal` or `hadoop_kerberos_kinit_command` is specified, `kinit` will be invoked. `hadoop_kerberos_keytab` and `hadoop_kerberos_principal` are mandatory in this case. `kinit` tool and krb5 configuration files are required.
## HDFS Namenode HA support{#namenode-ha}
## HDFS Namenode HA support {#namenode-ha}
libhdfs3 support HDFS namenode HA.

4
docs/en/engines/table-engines/mergetree-family/custom-partitioning-key.md
View File

@ -66,9 +66,9 @@ WHERE table = 'visits'
└───────────┴────────────────┴────────┘
```
The `partition` column contains the names of the partitions. There are two partitions in this example: `201901` and `201902`. You can use this column value to specify the partition name in [ALTER … PARTITION](#alter_manipulations-with-partitions) queries.
The `partition` column contains the names of the partitions. There are two partitions in this example: `201901` and `201902`. You can use this column value to specify the partition name in [ALTER … PARTITION](../../../sql-reference/statements/alter/partition.md) queries.
The `name` column contains the names of the partition data parts. You can use this column to specify the name of the part in the [ALTER ATTACH PART](#alter_attach-partition) query.
The `name` column contains the names of the partition data parts. You can use this column to specify the name of the part in the [ALTER ATTACH PART](../../../sql-reference/statements/alter/partition.md#alter_attach-partition) query.
Let’s break down the name of the first part: `201901_1_3_1`:

97
docs/en/engines/table-engines/special/distributed.md
View File

@ -8,24 +8,43 @@ toc_title: Distributed
Tables with Distributed engine do not store any data of their own, but allow distributed query processing on multiple servers.
Reading is automatically parallelized. During a read, the table indexes on remote servers are used, if there are any.
The Distributed engine accepts parameters:
## Creating a Table {#distributed-creating-a-table}
- the cluster name in the server’s config file
``` sql
CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
(
name1 [type1] [DEFAULT|MATERIALIZED|ALIAS expr1],
name2 [type2] [DEFAULT|MATERIALIZED|ALIAS expr2],
...
) ENGINE = Distributed(cluster, database, table[, sharding_key[, policy_name]])
[SETTINGS name=value, ...]
```
- the name of a remote database
### From a Table {#distributed-from-a-table}
When the `Distributed` table is pointing to a table on the current server you can adopt that table's schema:
- the name of a remote table
``` sql
CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster] AS [db2.]name2 ENGINE = Distributed(cluster, database, table[, sharding_key[, policy_name]]) [SETTINGS name=value, ...]
```
- (optionally) sharding key
**Distributed Parameters**
- (optionally) policy name, it will be used to store temporary files for async send
- `cluster` - the cluster name in the server’s config file
See also:
- `database` - the name of a remote database
- [insert_distributed_sync](../../../operations/settings/settings.md#insert_distributed_sync) setting
- [MergeTree](../../../engines/table-engines/mergetree-family/mergetree.md#table_engine-mergetree-multiple-volumes) for the examples
- `table` - the name of a remote table
Also, it accepts the following settings:
- `sharding_key` - (optionally) sharding key
- `policy_name` - (optionally) policy name, it will be used to store temporary files for async send
**See Also**
- [insert_distributed_sync](../../../operations/settings/settings.md#insert_distributed_sync) setting
- [MergeTree](../../../engines/table-engines/mergetree-family/mergetree.md#table_engine-mergetree-multiple-volumes) for the examples
**Distributed Settings**
- `fsync_after_insert` - do the `fsync` for the file data after asynchronous insert to Distributed. Guarantees that the OS flushed the whole inserted data to a file **on the initiator node** disk.
@ -59,24 +78,25 @@ Also, it accepts the following settings:
- [prefer_localhost_replica](../../../operations/settings/settings.md#settings-prefer-localhost-replica) setting
- `bytes_to_throw_insert` handled before `bytes_to_delay_insert`, so you should not set it to the value less then `bytes_to_delay_insert`
Example:
**Example**
``` sql
Distributed(logs, default, hits[, sharding_key[, policy_name]])
CREATE TABLE hits_all AS hits
ENGINE = Distributed(logs, default, hits[, sharding_key[, policy_name]])
SETTINGS
fsync_after_insert=0,
fsync_directories=0;
```
Data will be read from all servers in the `logs` cluster, from the default.hits table located on every server in the cluster.
Data will be read from all servers in the `logs` cluster, from the `default.hits` table located on every server in the cluster.
Data is not only read but is partially processed on the remote servers (to the extent that this is possible).
For example, for a query with GROUP BY, data will be aggregated on remote servers, and the intermediate states of aggregate functions will be sent to the requestor server. Then data will be further aggregated.
For example, for a query with `GROUP BY`, data will be aggregated on remote servers, and the intermediate states of aggregate functions will be sent to the requestor server. Then data will be further aggregated.
Instead of the database name, you can use a constant expression that returns a string. For example: currentDatabase().
Instead of the database name, you can use a constant expression that returns a string. For example: `currentDatabase()`.
logs – The cluster name in the server’s config file.
## Clusters {#distributed-clusters}
Clusters are set like this:
Clusters are configured in the [server configuration file](../../../operations/configuration-files.md):
``` xml
<remote_servers>
@ -132,12 +152,13 @@ Replicas are duplicating servers (in order to read all the data, you can access
Cluster names must not contain dots.
The parameters `host`, `port`, and optionally `user`, `password`, `secure`, `compression` are specified for each server:
- `host` – The address of the remote server. You can use either the domain or the IPv4 or IPv6 address. If you specify the domain, the server makes a DNS request when it starts, and the result is stored as long as the server is running. If the DNS request fails, the server does not start. If you change the DNS record, restart the server.
- `port` – The TCP port for messenger activity (`tcp_port` in the config, usually set to 9000). Do not confuse it with http_port.
- `user` – Name of the user for connecting to a remote server. Default value: default. This user must have access to connect to the specified server. Access is configured in the users.xml file. For more information, see the section [Access rights](../../../operations/access-rights.md).
- `port` – The TCP port for messenger activity (`tcp_port` in the config, usually set to 9000). Not to be confused with `http_port`.
- `user` – Name of the user for connecting to a remote server. Default value is the `default` user. This user must have access to connect to the specified server. Access is configured in the `users.xml` file. For more information, see the section [Access rights](../../../operations/access-rights.md).
- `password` – The password for connecting to a remote server (not masked). Default value: empty string.
- `secure` - Use ssl for connection, usually you also should define `port` = 9440. Server should listen on `<tcp_port_secure>9440</tcp_port_secure>` and have correct certificates.
- `compression` - Use data compression. Default value: true.
- `secure` - Whether to use a secure SSL/TLS connection. Usually also requires specifying the port (the default secure port is `9440`). The server should listen on `<tcp_port_secure>9440</tcp_port_secure>` and be configured with correct certificates.
- `compression` - Use data compression. Default value: `true`.
When specifying replicas, one of the available replicas will be selected for each of the shards when reading. You can configure the algorithm for load balancing (the preference for which replica to access) – see the [load_balancing](../../../operations/settings/settings.md#settings-load_balancing) setting.
If the connection with the server is not established, there will be an attempt to connect with a short timeout. If the connection failed, the next replica will be selected, and so on for all the replicas. If the connection attempt failed for all the replicas, the attempt will be repeated the same way, several times.
@ -149,40 +170,42 @@ You can specify as many clusters as you wish in the configuration.
To view your clusters, use the `system.clusters` table.
The Distributed engine allows working with a cluster like a local server. However, the cluster is inextensible: you must write its configuration in the server config file (even better, for all the cluster’s servers).
The `Distributed` engine allows working with a cluster like a local server. However, the cluster's configuration cannot be specified dynamically, it has to be configured in the server config file. Usually, all servers in a cluster will have the same cluster config (though this is not required). Clusters from the config file are updated on the fly, without restarting the server.
The Distributed engine requires writing clusters to the config file. Clusters from the config file are updated on the fly, without restarting the server. If you need to send a query to an unknown set of shards and replicas each time, you do not need to create a Distributed table – use the `remote` table function instead. See the section [Table functions](../../../sql-reference/table-functions/index.md).
If you need to send a query to an unknown set of shards and replicas each time, you do not need to create a `Distributed` table – use the `remote` table function instead. See the section [Table functions](../../../sql-reference/table-functions/index.md).
## Writing data {#distributed-writing-data}
There are two methods for writing data to a cluster:
First, you can define which servers to write which data to and perform the write directly on each shard. In other words, perform INSERT in the tables that the distributed table “looks at”. This is the most flexible solution as you can use any sharding scheme, which could be non-trivial due to the requirements of the subject area. This is also the most optimal solution since data can be written to different shards completely independently.
First, you can define which servers to write which data to and perform the write directly on each shard. In other words, perform direct `INSERT` statements on the remote tables in the cluster that the `Distributed` table is pointing to. This is the most flexible solution as you can use any sharding scheme, even one that is non-trivial due to the requirements of the subject area. This is also the most optimal solution since data can be written to different shards completely independently.
Second, you can perform INSERT in a Distributed table. In this case, the table will distribute the inserted data across the servers itself. In order to write to a Distributed table, it must have a sharding key set (the last parameter). In addition, if there is only one shard, the write operation works without specifying the sharding key, since it does not mean anything in this case.
Second, you can perform `INSERT` statements on a `Distributed` table. In this case, the table will distribute the inserted data across the servers itself. In order to write to a `Distributed` table, it must have the `sharding_key` parameter configured (except if there is only one shard).
Each shard can have a weight defined in the config file. By default, the weight is equal to one. Data is distributed across shards in the amount proportional to the shard weight. For example, if there are two shards and the first has a weight of 9 while the second has a weight of 10, the first will be sent 9 / 19 parts of the rows, and the second will be sent 10 / 19.
Each shard can have a `<weight>` defined in the config file. By default, the weight is `1`. Data is distributed across shards in the amount proportional to the shard weight. All shard weights are summed up, then each shard's weight is divided by the total to determine each shard's proportion. For example, if there are two shards and the first has a weight of 1 while the second has a weight of 2, the first will be sent one third (1 / 3) of inserted rows and the second will be sent two thirds (2 / 3).
Each shard can have the `internal_replication` parameter defined in the config file.
Each shard can have the `internal_replication` parameter defined in the config file. If this parameter is set to `true`, the write operation selects the first healthy replica and writes data to it. Use this if the tables underlying the `Distributed` table are replicated tables (e.g. any of the `Replicated*MergeTree` table engines). One of the table replicas will receive the write and it will be replicated to the other replicas automatically.
If this parameter is set to `true`, the write operation selects the first healthy replica and writes data to it. Use this alternative if the Distributed table “looks at” replicated tables. In other words, if the table where data will be written is going to replicate them itself.
If it is set to `false` (the default), data is written to all replicas. In essence, this means that the Distributed table replicates data itself. This is worse than using replicated tables, because the consistency of replicas is not checked, and over time they will contain slightly different data.
If `internal_replication` is set to `false` (the default), data is written to all replicas. In this case, the `Distributed` table replicates data itself. This is worse than using replicated tables because the consistency of replicas is not checked and, over time, they will contain slightly different data.
To select the shard that a row of data is sent to, the sharding expression is analyzed, and its remainder is taken from dividing it by the total weight of the shards. The row is sent to the shard that corresponds to the half-interval of the remainders from `prev_weights` to `prev_weights + weight`, where `prev_weights` is the total weight of the shards with the smallest number, and `weight` is the weight of this shard. For example, if there are two shards, and the first has a weight of 9 while the second has a weight of 10, the row will be sent to the first shard for the remainders from the range \[0, 9), and to the second for the remainders from the range \[9, 19).
The sharding expression can be any expression from constants and table columns that returns an integer. For example, you can use the expression `rand()` for random distribution of data, or `UserID` for distribution by the remainder from dividing the user’s ID (then the data of a single user will reside on a single shard, which simplifies running IN and JOIN by users). If one of the columns is not distributed evenly enough, you can wrap it in a hash function: intHash64(UserID).
The sharding expression can be any expression from constants and table columns that returns an integer. For example, you can use the expression `rand()` for random distribution of data, or `UserID` for distribution by the remainder from dividing the user’s ID (then the data of a single user will reside on a single shard, which simplifies running `IN` and `JOIN` by users). If one of the columns is not distributed evenly enough, you can wrap it in a hash function e.g. `intHash64(UserID)`.
A simple remainder from the division is a limited solution for sharding and isn’t always appropriate. It works for medium and large volumes of data (dozens of servers), but not for very large volumes of data (hundreds of servers or more). In the latter case, use the sharding scheme required by the subject area, rather than using entries in Distributed tables.
SELECT queries are sent to all the shards and work regardless of how data is distributed across the shards (they can be distributed completely randomly). When you add a new shard, you do not have to transfer old data into it. Instead, you can write new data to it by using a heavier weight – the data will be distributed slightly unevenly, but queries will work correctly and efficiently.
A simple remainder from the division is a limited solution for sharding and isn’t always appropriate. It works for medium and large volumes of data (dozens of servers), but not for very large volumes of data (hundreds of servers or more). In the latter case, use the sharding scheme required by the subject area rather than using entries in `Distributed` tables.
You should be concerned about the sharding scheme in the following cases:
- Queries are used that require joining data (IN or JOIN) by a specific key. If data is sharded by this key, you can use local IN or JOIN instead of GLOBAL IN or GLOBAL JOIN, which is much more efficient.
- A large number of servers is used (hundreds or more) with a large number of small queries (queries of individual clients - websites, advertisers, or partners). In order for the small queries to not affect the entire cluster, it makes sense to locate data for a single client on a single shard. Alternatively, as we’ve done in Yandex.Metrica, you can set up bi-level sharding: divide the entire cluster into “layers”, where a layer may consist of multiple shards. Data for a single client is located on a single layer, but shards can be added to a layer as necessary, and data is randomly distributed within them. Distributed tables are created for each layer, and a single shared distributed table is created for global queries.
- Queries are used that require joining data (`IN` or `JOIN`) by a specific key. If data is sharded by this key, you can use local `IN` or `JOIN` instead of `GLOBAL IN` or `GLOBAL JOIN`, which is much more efficient.
- A large number of servers is used (hundreds or more) with a large number of small queries, for example, queries for data of individual clients (e.g. websites, advertisers, or partners). In order for the small queries to not affect the entire cluster, it makes sense to locate data for a single client on a single shard. Alternatively, as we’ve done in Yandex.Metrica, you can set up bi-level sharding: divide the entire cluster into “layers”, where a layer may consist of multiple shards. Data for a single client is located on a single layer, but shards can be added to a layer as necessary, and data is randomly distributed within them. `Distributed` tables are created for each layer, and a single shared distributed table is created for global queries.
Data is written asynchronously. When inserted in the table, the data block is just written to the local file system. The data is sent to the remote servers in the background as soon as possible. The periodicity for sending data is managed by the [distributed_directory_monitor_sleep_time_ms](../../../operations/settings/settings.md#distributed_directory_monitor_sleep_time_ms) and [distributed_directory_monitor_max_sleep_time_ms](../../../operations/settings/settings.md#distributed_directory_monitor_max_sleep_time_ms) settings. The `Distributed` engine sends each file with inserted data separately, but you can enable batch sending of files with the [distributed_directory_monitor_batch_inserts](../../../operations/settings/settings.md#distributed_directory_monitor_batch_inserts) setting. This setting improves cluster performance by better utilizing local server and network resources. You should check whether data is sent successfully by checking the list of files (data waiting to be sent) in the table directory: `/var/lib/clickhouse/data/database/table/`. The number of threads performing background tasks can be set by [background_distributed_schedule_pool_size](../../../operations/settings/settings.md#background_distributed_schedule_pool_size) setting.
If the server ceased to exist or had a rough restart (for example, after a device failure) after an INSERT to a Distributed table, the inserted data might be lost. If a damaged data part is detected in the table directory, it is transferred to the `broken` subdirectory and no longer used.
If the server ceased to exist or had a rough restart (for example, due to a hardware failure) after an `INSERT` to a `Distributed` table, the inserted data might be lost. If a damaged data part is detected in the table directory, it is transferred to the `broken` subdirectory and no longer used.
## Reading data {#distributed-reading-data}
When querying a `Distributed` table, `SELECT` queries are sent to all shards and work regardless of how data is distributed across the shards (they can be distributed completely randomly). When you add a new shard, you do not have to transfer old data into it. Instead, you can write new data to it by using a heavier weight – the data will be distributed slightly unevenly, but queries will work correctly and efficiently.
When the `max_parallel_replicas` option is enabled, query processing is parallelized across all replicas within a single shard. For more information, see the section [max_parallel_replicas](../../../operations/settings/settings.md#settings-max_parallel_replicas).

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@ -204,7 +204,7 @@ When parsing with this format, tabs or linefeeds are not allowed in each field.
This format is also available under the name `TSVRawWithNames`.
## TabSeparatedWithNamesAndTypes {#tabseparatedrawwithnamesandtypes}
## TabSeparatedRawWithNamesAndTypes {#tabseparatedrawwithnamesandtypes}
Differs from `TabSeparatedWithNamesAndTypes` format in that the rows are written without escaping.
When parsing with this format, tabs or linefeeds are not allowed in each field.

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@ -0,0 +1,99 @@
---
toc_priority: 19
toc_title: gRPC Interface
---
# gRPC Interface {#grpc-interface}
## Introduction {#grpc-interface-introduction}
ClickHouse supports [gRPC](https://grpc.io/) interface. It is an open source remote procedure call system that uses HTTP/2 and [Protocol Buffers](https://en.wikipedia.org/wiki/Protocol_Buffers). The implementation of gRPC in ClickHouse supports:
- SSL;
- authentication;
- sessions;
- compression;
- parallel queries through the same channel;
- cancellation of queries;
- getting progress and logs;
- external tables.
The specification of the interface is described in [clickhouse_grpc.proto](https://github.com/ClickHouse/ClickHouse/blob/master/src/Server/grpc_protos/clickhouse_grpc.proto).
## gRPC Configuration {#grpc-interface-configuration}
To use the gRPC interface set `grpc_port` in the main [server configuration](../operations/configuration-files.md). Other configuration options see in the following example:
```xml
<grpc_port>9100</grpc_port>
<grpc>
<enable_ssl>false</enable_ssl>
<!-- The following two files are used only if SSL is enabled -->
<ssl_cert_file>/path/to/ssl_cert_file</ssl_cert_file>
<ssl_key_file>/path/to/ssl_key_file</ssl_key_file>
<!-- Whether server requests client for a certificate -->
<ssl_require_client_auth>false</ssl_require_client_auth>
<!-- The following file is used only if ssl_require_client_auth=true -->
<ssl_ca_cert_file>/path/to/ssl_ca_cert_file</ssl_ca_cert_file>
<!-- Default compression algorithm (applied if client doesn't specify another algorithm, see result_compression in QueryInfo).
Supported algorithms: none, deflate, gzip, stream_gzip -->
<compression>deflate</compression>
<!-- Default compression level (applied if client doesn't specify another level, see result_compression in QueryInfo).
Supported levels: none, low, medium, high -->
<compression_level>medium</compression_level>
<!-- Send/receive message size limits in bytes. -1 means unlimited -->
<max_send_message_size>-1</max_send_message_size>
<max_receive_message_size>-1</max_receive_message_size>
<!-- Enable if you want to get detailed logs -->
<verbose_logs>false</verbose_logs>
</grpc>
```
## Built-in Client {#grpc-client}
You can write a client in any of the programming languages supported by gRPC using the provided [specification](https://github.com/ClickHouse/ClickHouse/blob/master/src/Server/grpc_protos/clickhouse_grpc.proto).
Or you can use a built-in Python client. It is placed in [utils/grpc-client/clickhouse-grpc-client.py](https://github.com/ClickHouse/ClickHouse/blob/master/utils/grpc-client/clickhouse-grpc-client.py) in the repository. The built-in client requires [grpcio and grpcio-tools](https://grpc.io/docs/languages/python/quickstart) Python modules.
The client supports the following arguments:
- `--help` – Shows a help message and exits.
- `--host HOST, -h HOST` – A server name. Default value: `localhost`. You can use IPv4 or IPv6 addresses also.
- `--port PORT` – A port to connect to. This port should be enabled in the ClickHouse server configuration (see `grpc_port`). Default value: `9100`.
- `--user USER_NAME, -u USER_NAME` – A user name. Default value: `default`.
- `--password PASSWORD` – A password. Default value: empty string.
- `--query QUERY, -q QUERY` – A query to process when using non-interactive mode.
- `--database DATABASE, -d DATABASE` – A default database. If not specified, the current database set in the server settings is used (`default` by default).
- `--format OUTPUT_FORMAT, -f OUTPUT_FORMAT` – A result output [format](formats.md). Default value for interactive mode: `PrettyCompact`.
- `--debug` – Enables showing debug information.
To run the client in an interactive mode call it without `--query` argument.
In a batch mode query data can be passed via `stdin`.
**Client Usage Example**
In the following example a table is created and loaded with data from a CSV file. Then the content of the table is queried.
``` bash
./clickhouse-grpc-client.py -q "CREATE TABLE grpc_example_table (id UInt32, text String) ENGINE = MergeTree() ORDER BY id;"
echo "0,Input data for" > a.txt ; echo "1,gRPC protocol example" >> a.txt
cat a.txt | ./clickhouse-grpc-client.py -q "INSERT INTO grpc_example_table FORMAT CSV"
./clickhouse-grpc-client.py --format PrettyCompact -q "SELECT * FROM grpc_example_table;"
```
Result:
``` text
┌─id─┬─text──────────────────┐
│ 0 │ Input data for │
│ 1 │ gRPC protocol example │
└────┴───────────────────────┘
```

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@ -6,10 +6,11 @@ toc_title: Introduction
# Interfaces {#interfaces}
ClickHouse provides two network interfaces (both can be optionally wrapped in TLS for additional security):
ClickHouse provides three network interfaces (they can be optionally wrapped in TLS for additional security):
- [HTTP](http.md), which is documented and easy to use directly.
- [Native TCP](../interfaces/tcp.md), which has less overhead.
- [gRPC](grpc.md).
In most cases it is recommended to use appropriate tool or library instead of interacting with those directly. Officially supported by Yandex are the following:
@ -24,4 +25,3 @@ There are also a wide range of third-party libraries for working with ClickHouse
- [Integrations](../interfaces/third-party/integrations.md)
- [Visual interfaces](../interfaces/third-party/gui.md)
[Original article](https://clickhouse.com/docs/en/interfaces/) <!--hide-->

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@ -505,7 +505,7 @@ Keys:
- `level` – Logging level. Acceptable values: `trace`, `debug`, `information`, `warning`, `error`.
- `log` – The log file. Contains all the entries according to `level`.
- `errorlog` – Error log file.
- `size` – Size of the file. Applies to `log`and`errorlog`. Once the file reaches `size`, ClickHouse archives and renames it, and creates a new log file in its place.
- `size` – Size of the file. Applies to `log` and `errorlog`. Once the file reaches `size`, ClickHouse archives and renames it, and creates a new log file in its place.
- `count` – The number of archived log files that ClickHouse stores.
**Example**
@ -750,9 +750,13 @@ The value 0 means that you can delete all tables without any restrictions.
## max_thread_pool_size {#max-thread-pool-size}
The maximum number of threads in the Global Thread pool.
ClickHouse uses threads from the Global Thread pool to process queries. If there is no idle thread to process a query, then a new thread is created in the pool. `max_thread_pool_size` limits the maximum number of threads in the pool.
Default value: 10000.
Possible values:
- Positive integer.
Default value: `10000`.
**Example**
@ -762,9 +766,13 @@ Default value: 10000.
## max_thread_pool_free_size {#max-thread-pool-free-size}
The number of threads that are always held in the Global Thread pool.
If the number of **idle** threads in the Global Thread pool is greater than `max_thread_pool_free_size`, then ClickHouse releases resources occupied by some threads and the pool size is decreased. Threads can be created again if necessary.
Default value: 1000.
Possible values:
- Positive integer.
Default value: `1000`.
**Example**
@ -774,9 +782,13 @@ Default value: 1000.
## thread_pool_queue_size {#thread-pool-queue-size}
The limit to the number of jobs that can be scheduled on the Global Thread pool. Increasing queue size leads to larger memory usage. It is recommended to keep this value equal to the `max_thread_pool_size`.
The maximum number of jobs that can be scheduled on the Global Thread pool. Increasing queue size leads to larger memory usage. It is recommended to keep this value equal to [max_thread_pool_size](#max-thread-pool-size).
Default value: 10000.
Possible values:
- Positive integer.
Default value: `10000`.
**Example**
@ -1443,7 +1455,7 @@ You can also define sections `memory` — means storing information only in memo
To add an LDAP server as a remote user directory of users that are not defined locally, define a single `ldap` section with a following parameters:
- `server` — one of LDAP server names defined in `ldap_servers` config section. This parameter is mandatory and cannot be empty.
- `roles` — section with a list of locally defined roles that will be assigned to each user retrieved from the LDAP server. If no roles are specified, user will not be able to perform any actions after authentication. If any of the listed roles is not defined locally at the time of authentication, the authenthication attept will fail as if the provided password was incorrect.
- `roles` — section with a list of locally defined roles that will be assigned to each user retrieved from the LDAP server. If no roles are specified, user will not be able to perform any actions after authentication. If any of the listed roles is not defined locally at the time of authentication, the authentication attempt will fail as if the provided password was incorrect.
**Example**
@ -1507,3 +1519,4 @@ Possible values:
- Positive integer.
Default value: `10000`.

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@ -1687,18 +1687,17 @@ Quorum writes
`INSERT` succeeds only when ClickHouse manages to correctly write data to the `insert_quorum` of replicas during the `insert_quorum_timeout`. If for any reason the number of replicas with successful writes does not reach the `insert_quorum`, the write is considered failed and ClickHouse will delete the inserted block from all the replicas where data has already been written.
All the replicas in the quorum are consistent, i.e., they contain data from all previous `INSERT` queries. The `INSERT` sequence is linearized.
When `insert_quorum_parallel` is disabled, all replicas in the quorum are consistent, i.e. they contain data from all previous `INSERT` queries (the `INSERT` sequence is linearized). When reading data written using `insert_quorum` and `insert_quorum_parallel` is disabled, you can turn on sequential consistency for `SELECT` queries using [select_sequential_consistency](#settings-select_sequential_consistency).
When reading the data written from the `insert_quorum`, you can use the [select_sequential_consistency](#settings-select_sequential_consistency) option.
ClickHouse generates an exception
ClickHouse generates an exception:
- If the number of available replicas at the time of the query is less than the `insert_quorum`.
- At an attempt to write data when the previous block has not yet been inserted in the `insert_quorum` of replicas. This situation may occur if the user tries to perform an `INSERT` before the previous one with the `insert_quorum` is completed.
- When `insert_quorum_parallel` is disabled and an attempt to write data is made when the previous block has not yet been inserted in `insert_quorum` of replicas. This situation may occur if the user tries to perform another `INSERT` query to the same table before the previous one with `insert_quorum` is completed.
See also:
- [insert_quorum_timeout](#settings-insert_quorum_timeout)
- [insert_quorum_parallel](#settings-insert_quorum_parallel)
- [select_sequential_consistency](#settings-select_sequential_consistency)
## insert_quorum_timeout {#settings-insert_quorum_timeout}
@ -1710,11 +1709,29 @@ Default value: 600 000 milliseconds (ten minutes).
See also:
- [insert_quorum](#settings-insert_quorum)
- [insert_quorum_parallel](#settings-insert_quorum_parallel)
- [select_sequential_consistency](#settings-select_sequential_consistency)
## insert_quorum_parallel {#settings-insert_quorum_parallel}
Enables or disables parallelism for quorum `INSERT` queries. If enabled, additional `INSERT` queries can be sent while previous queries have not yet finished. If disabled, additional writes to the same table will be rejected.
Possible values:
- 0 — Disabled.
- 1 — Enabled.
Default value: 1.
See also:
- [insert_quorum](#settings-insert_quorum)
- [insert_quorum_timeout](#settings-insert_quorum_timeout)
- [select_sequential_consistency](#settings-select_sequential_consistency)
## select_sequential_consistency {#settings-select_sequential_consistency}
Enables or disables sequential consistency for `SELECT` queries:
Enables or disables sequential consistency for `SELECT` queries. Requires `insert_quorum_parallel` to be disabled (enabled by default).
Possible values:
@ -1727,10 +1744,13 @@ Usage
When sequential consistency is enabled, ClickHouse allows the client to execute the `SELECT` query only for those replicas that contain data from all previous `INSERT` queries executed with `insert_quorum`. If the client refers to a partial replica, ClickHouse will generate an exception. The SELECT query will not include data that has not yet been written to the quorum of replicas.
When `insert_quorum_parallel` is enabled (the default), then `select_sequential_consistency` does not work. This is because parallel `INSERT` queries can be written to different sets of quorum replicas so there is no guarantee a single replica will have received all writes.
See also:
- [insert_quorum](#settings-insert_quorum)
- [insert_quorum_timeout](#settings-insert_quorum_timeout)
- [insert_quorum_parallel](#settings-insert_quorum_parallel)
## insert_deduplicate {#settings-insert-deduplicate}

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@ -34,7 +34,7 @@ Use `perf top` to watch the time spent in the kernel for memory management.
Permanent huge pages also do not need to be allocated.
!!! warning "Attention"
If your system has less than 16 GB of RAM you may experience various memory exceptions because default settings does not match this amount of RAM. Recommended amount of RAM is 32 GB or more. You can use ClickHouse in system with small amount of RAM, even with 2 GB of RAM, but it requires an additional tuning and able to process small ingestion rate.
If your system has less than 16 GB of RAM, you may experience various memory exceptions because default settings do not match this amount of memory. The recommended amount of RAM is 32 GB or more. You can use ClickHouse in a system with a small amount of RAM, even with 2 GB of RAM, but it requires additional tuning and can ingest at a low rate.
## Storage Subsystem {#storage-subsystem}

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@ -26,7 +26,7 @@ Query is send in post body. Response is returned in RowBinary format.
```bash
$ clickhouse-odbc-bridge --http-port 9018 --daemon
$ curl -d "query=SELECT PageID, ImpID, AdType FROM Keys ORDER BY PageID, ImpID" --data-urlencode "connection_string=DSN=ClickHouse;DATABASE=stat" --data-urlencode "columns=columns format version: 1
$ curl -d "query=SELECT PageID, ImpID, AdType FROM Keys ORDER BY PageID, ImpID" --data-urlencode "connection_string=DSN=ClickHouse;DATABASE=stat" --data-urlencode "sample_block=columns format version: 1
3 columns:
\`PageID\` String
\`ImpID\` String

18
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@ -1,13 +1,13 @@
---
toc_priority: 68
toc_title: Window View
toc_title: Time Window
---
# Window View Functions {#window-view-functions}
# Time Window Functions {#time-window-functions}
Window view functions return the inclusive lower and exclusive upper bound of the corresponding window. The functions for working with WindowView are listed below:
Time window functions return the inclusive lower and exclusive upper bound of the corresponding window. The functions for working with WindowView are listed below:
## tumble {#window-view-functions-tumble}
## tumble {#time-window-functions-tumble}
A tumbling time window assigns records to non-overlapping, continuous windows with a fixed duration (`interval`).
@ -42,7 +42,7 @@ Result:
└───────────────────────────────────────────────┘
```
## hop {#window-view-functions-hop}
## hop {#time-window-functions-hop}
A hopping time window has a fixed duration (`window_interval`) and hops by a specified hop interval (`hop_interval`). If the `hop_interval` is smaller than the `window_interval`, hopping windows are overlapping. Thus, records can be assigned to multiple windows.
@ -79,7 +79,7 @@ Result:
└───────────────────────────────────────────────────────────┘
```
## tumbleStart {#window-view-functions-tumblestart}
## tumbleStart {#time-window-functions-tumblestart}
Returns the inclusive lower bound of the corresponding tumbling window.
@ -87,7 +87,7 @@ Returns the inclusive lower bound of the corresponding tumbling window.
tumbleStart(time_attr, interval [, timezone]);
```
## tumbleEnd {#window-view-functions-tumbleend}
## tumbleEnd {#time-window-functions-tumbleend}
Returns the exclusive upper bound of the corresponding tumbling window.
@ -95,7 +95,7 @@ Returns the exclusive upper bound of the corresponding tumbling window.
tumbleEnd(time_attr, interval [, timezone]);
```
## hopStart {#window-view-functions-hopstart}
## hopStart {#time-window-functions-hopstart}
Returns the inclusive lower bound of the corresponding hopping window.
@ -103,7 +103,7 @@ Returns the inclusive lower bound of the corresponding hopping window.
hopStart(time_attr, hop_interval, window_interval [, timezone]);
```
## hopEnd {#window-view-functions-hopend}
## hopEnd {#time-window-functions-hopend}
Returns the exclusive upper bound of the corresponding hopping window.

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@ -22,7 +22,7 @@ CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
) ENGINE = engine
```
Creates a table named `name` in the `db` database or the current database if `db` is not set, with the structure specified in brackets and the `engine` engine.
Creates a table named `table_name` in the `db` database or the current database if `db` is not set, with the structure specified in brackets and the `engine` engine.
The structure of the table is a list of column descriptions, secondary indexes and constraints . If [primary key](#primary-key) is supported by the engine, it will be indicated as parameter for the table engine.
A column description is `name type` in the simplest case. Example: `RegionID UInt32`.

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@ -251,22 +251,22 @@ Most common uses of live view tables include:
Enable usage of window views and `WATCH` query using [allow_experimental_window_view](../../../operations/settings/settings.md#allow-experimental-window-view) setting. Input the command `set allow_experimental_window_view = 1`.
``` sql
CREATE WINDOW VIEW [IF NOT EXISTS] [db.]table_name [TO [db.]table_name] [ENGINE = engine] [WATERMARK = strategy] [ALLOWED_LATENESS = interval_function] AS SELECT ... GROUP BY window_view_function
CREATE WINDOW VIEW [IF NOT EXISTS] [db.]table_name [TO [db.]table_name] [ENGINE = engine] [WATERMARK = strategy] [ALLOWED_LATENESS = interval_function] AS SELECT ... GROUP BY time_window_function
```
Window view can aggregate data by time window and output the results when the window is ready to fire. It stores the partial aggregation results in an inner(or specified) table to reduce latency and can push the processing result to a specified table or push notifications using the WATCH query.
Creating a window view is similar to creating `MATERIALIZED VIEW`. Window view needs an inner storage engine to store intermediate data. The inner storage will use `AggregatingMergeTree` as the default engine.
### Window View Functions {#window-view-windowviewfunctions}
### Time Window Functions {#window-view-timewindowfunctions}
[Window view functions](../../functions/window-view-functions.md) are used to get the lower and upper window bound of records. The window view needs to be used with a window view function.
[Time window functions](../../functions/time-window-functions.md) are used to get the lower and upper window bound of records. The window view needs to be used with a time window function.
### TIME ATTRIBUTES {#window-view-timeattributes}
Window view supports **processing time** and **event time** process.
**Processing time** allows window view to produce results based on the local machine's time and is used by default. It is the most straightforward notion of time but does not provide determinism. The processing time attribute can be defined by setting the `time_attr` of the window view function to a table column or using the function `now()`. The following query creates a window view with processing time.
**Processing time** allows window view to produce results based on the local machine's time and is used by default. It is the most straightforward notion of time but does not provide determinism. The processing time attribute can be defined by setting the `time_attr` of the time window function to a table column or using the function `now()`. The following query creates a window view with processing time.
``` sql
CREATE WINDOW VIEW wv AS SELECT count(number), tumbleStart(w_id) as w_start from date GROUP BY tumble(now(), INTERVAL '5' SECOND) as w_id
@ -296,15 +296,18 @@ CREATE WINDOW VIEW test.wv TO test.dst WATERMARK=ASCENDING ALLOWED_LATENESS=INTE
Note that elements emitted by a late firing should be treated as updated results of a previous computation. Instead of firing at the end of windows, the window view will fire immediately when the late event arrives. Thus, it will result in multiple outputs for the same window. Users need to take these duplicated results into account or deduplicate them.
### Monitoring New Windows{#window-view-monitoring}
### Monitoring New Windows {#window-view-monitoring}
Window view supports the `WATCH` query to constantly append the processing results to the console or use `TO` syntax to output the results to a table.
Window view supports the [WATCH](../../../sql-reference/statements/watch.md) query to monitoring changes, or use `TO` syntax to output the results to a table.
``` sql
WATCH [db.]name [LIMIT n]
WATCH [db.]window_view
[EVENTS]
[LIMIT n]
[FORMAT format]
```
`WATCH` query acts similar as in `LIVE VIEW`. A `LIMIT` can be specified to set the number of updates to receive before terminating the query.
`WATCH` query acts similar as in `LIVE VIEW`. A `LIMIT` can be specified to set the number of updates to receive before terminating the query. The `EVENTS` clause can be used to obtain a short form of the `WATCH` query where instead of the query result you will just get the latest query watermark.
### Settings {#window-view-settings}

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@ -206,6 +206,9 @@ This extra row is only produced in `JSON*`, `TabSeparated*`, and `Pretty*` forma
- In `Pretty*` formats, the row is output as a separate table after the main result.
- In the other formats it is not available.
!!! note "Note"
totals is output in the results of `SELECT` queries, and is not output in `INSERT INTO ... SELECT`.
`WITH TOTALS` can be run in different ways when [HAVING](../../../sql-reference/statements/select/having.md) is present. The behavior depends on the `totals_mode` setting.
### Configuring Totals Processing {#configuring-totals-processing}

99
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@ -0,0 +1,99 @@
---
toc_priority: 18
toc_title: gRPC интерфейс
---
# Интерфейс gRPC {#grpc-interface}
## Введение {#grpc-interface-introduction}
ClickHouse поддерживает интерфейс [gRPC](https://grpc.io/). Это система удаленного вызова процедур с открытым исходным кодом, которая использует HTTP/2 и [Protocol Buffers](https://ru.wikipedia.org/wiki/Protocol_Buffers). В реализации gRPC в ClickHouse поддерживаются:
- SSL;
- аутентификация;
- сессии;
- сжатие;
- параллельные запросы, выполняемые через один канал;
- отмена запросов;
- получение прогресса операций и логов;
- внешние таблицы.
Спецификация интерфейса содержится в [clickhouse_grpc.proto](https://github.com/ClickHouse/ClickHouse/blob/master/src/Server/grpc_protos/clickhouse_grpc.proto).
## Конфигурация gRPC {#grpc-interface-configuration}
Чтобы сделать доступным интерфейс gRPC, нужно задать порт с помощью настройки `grpc_port` в [конфигурации сервера](../operations/configuration-files.md). Другие настройки приведены в примере:
```xml
<grpc_port>9100</grpc_port>
<grpc>
<enable_ssl>false</enable_ssl>
<!-- Пути к файлам сертификатов и ключей. Используются при включенном SSL -->
<ssl_cert_file>/path/to/ssl_cert_file</ssl_cert_file>
<ssl_key_file>/path/to/ssl_key_file</ssl_key_file>
<!-- Запрашивает ли сервер сертификат клиента -->
<ssl_require_client_auth>false</ssl_require_client_auth>
<!-- Используется, если необходимо запрашивать сертификат -->
<ssl_ca_cert_file>/path/to/ssl_ca_cert_file</ssl_ca_cert_file>
<!-- Алгоритм сжатия по умолчанию (применяется, если клиент не указывает алгоритм, см. result_compression в QueryInfo).
Поддерживаются алгоритмы: none, deflate, gzip, stream_gzip -->
<compression>deflate</compression>
<!-- Уровень сжатия по умолчанию (применяется, если клиент не указывает уровень сжатия, см. result_compression в QueryInfo).
Поддерживаемые уровни: none, low, medium, high -->
<compression_level>medium</compression_level>
<!-- Ограничение в байтах на размер отправляемых и принимаемых сообщений. -1 означает отсутствие ограничения -->
<max_send_message_size>-1</max_send_message_size>
<max_receive_message_size>-1</max_receive_message_size>
<!-- Выводить ли детализированные логи -->
<verbose_logs>false</verbose_logs>
</grpc>
```
## Встроенный клиент {#grpc-client}
Можно написать клиент на любом языке программирования, который поддерживается gRPC, с использованием [спецификации](https://github.com/ClickHouse/ClickHouse/blob/master/src/Server/grpc_protos/clickhouse_grpc.proto).
Также можно воспользоваться встроенным Python клиентом. Он расположен в [utils/grpc-client/clickhouse-grpc-client.py](https://github.com/ClickHouse/ClickHouse/blob/master/utils/grpc-client/clickhouse-grpc-client.py) в репозитории. Для работы встроенного клиента требуются Python модули [grpcio и grpcio-tools](https://grpc.io/docs/languages/python/quickstart).
Клиент поддерживает аргументы:
- `--help` – вывести справку и завершить работу.
- `--host HOST, -h HOST` – имя сервера. Значение по умолчанию: `localhost`. Можно задать адрес IPv4 или IPv6.
- `--port PORT` – номер порта. Этот порт должен быть задан в конфигурации сервера ClickHouse настройкой `grpc_port`. Значение по умолчанию: `9100`.
- `--user USER_NAME, -u USER_NAME` – имя пользователя. Значение по умолчанию: `default`.
- `--password PASSWORD` – пароль. Значение по умолчанию: пустая строка.
- `--query QUERY, -q QUERY` – запрос, который выполнится, когда используется неинтерактивный режим работы.
- `--database DATABASE, -d DATABASE` – база данных по умолчанию. Если не указана, то будет использована база данных, заданная в настройках сервера (по умолчанию `default`).
- `--format OUTPUT_FORMAT, -f OUTPUT_FORMAT` – [формат](formats.md) вывода результата. Значение по умолчанию для интерактивного режима: `PrettyCompact`.
- `--debug` – вывод отладочной информации.
Чтобы запустить клиент в интерактивном режиме, не указывайте аргумент `--query`.
В неинтерактивном режиме данные запроса можно передать через `stdin`.
**Пример использования клиента**
В примере создается таблица, и в нее загружаются данные из CSV файла. Затем выводится содержимое таблицы.
``` bash
./clickhouse-grpc-client.py -q "CREATE TABLE grpc_example_table (id UInt32, text String) ENGINE = MergeTree() ORDER BY id;"
echo "0,Input data for" > a.txt ; echo "1,gRPC protocol example" >> a.txt
cat a.txt | ./clickhouse-grpc-client.py -q "INSERT INTO grpc_example_table FORMAT CSV"
./clickhouse-grpc-client.py --format PrettyCompact -q "SELECT * FROM grpc_example_table;"
```
Результат:
``` text
┌─id─┬─text──────────────────┐
│ 0 │ Input data for │
│ 1 │ gRPC protocol example │
└────┴───────────────────────┘
```

7
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@ -6,12 +6,13 @@ toc_title: "Введение"
# Интерфейсы {#interfaces}
ClickHouse предоставляет два сетевых интерфейса (оба могут быть дополнительно обернуты в TLS для дополнительной безопасности):
ClickHouse предоставляет три сетевых интерфейса (они могут быть обернуты в TLS для дополнительной безопасности):
- [HTTP](http.md), который задокументирован и прост для использования напрямую;
- [Native TCP](tcp.md), который имеет меньше накладных расходов.
- [Native TCP](tcp.md), который имеет меньше накладных расходов;
- [gRPC](grpc.md).
В большинстве случаев рекомендуется использовать подходящий инструмент или библиотеку, а не напрямую взаимодействовать с ClickHouse по сути. Официально поддерживаемые Яндексом:
В большинстве случаев рекомендуется использовать подходящий инструмент или библиотеку, а не напрямую взаимодействовать с ClickHouse. Официально поддерживаемые Яндексом:
- [Консольный клиент](cli.md);
- [JDBC-драйвер](jdbc.md);

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View File

@ -52,7 +52,7 @@ ClickHouse перезагружает встроенные словари с з
ClickHouse проверяет условия для `min_part_size` и `min_part_size_ratio` и выполнит те блоки `case`, для которых условия совпали.
- Если кусок данных совпадает с условиями, ClickHouse использует указанные метод сжатия.
- Если кусок данных совпадает с несколькими блоками `case`, ClickHouse использует перый совпавший блок условий.
- Если кусок данных совпадает с несколькими блоками `case`, ClickHouse использует первый совпавший блок условий.
Если ни один `<case>` не подходит, то ClickHouse применит алгоритм сжатия `lz4`.
@ -554,13 +554,13 @@ ClickHouse проверяет условия для `min_part_size` и `min_part
Ключи:
- `enabled` – Булевый флаг чтобы включить функциональность, по умолчанию `false`. Установите `true` чтобы разрешить отправку отчетов о сбоях.
- `endpoint` – Вы можете переопределить URL на который будут отсылаться отчеты об ошибках и использовать собственную инсталяцию Sentry. Используйте URL синтаксис [Sentry DSN](https://docs.sentry.io/error-reporting/quickstart/?platform=native#configure-the-sdk).
- `endpoint` – Вы можете переопределить URL на который будут отсылаться отчеты об ошибках и использовать собственную инсталляцию Sentry. Используйте URL синтаксис [Sentry DSN](https://docs.sentry.io/error-reporting/quickstart/?platform=native#configure-the-sdk).
- `anonymize` - Запретить отсылку имени хоста сервера в отчете о сбое.
- `http_proxy` - Настройка HTTP proxy для отсылки отчетов о сбоях.
- `debug` - Настроить клиентскую библиотеку Sentry в debug режим.
- `tmp_path` - Путь в файловой системе для временного хранения состояния отчетов о сбоях перед отправкой на сервер Sentry.
**Рекомендованые настройки**
**Рекомендованные настройки**
``` xml
<send_crash_reports>
@ -751,9 +751,13 @@ ClickHouse проверяет условия для `min_part_size` и `min_part
## max_thread_pool_size {#max-thread-pool-size}
Максимальное количество потоков в глобальном пуле потоков.
ClickHouse использует потоки из глобального пула потоков для обработки запросов. Если в пуле нет свободных потоков, то в нем создается еще один. Параметр `max_thread_pool_size` ограничивает максимальное количество потоков в пуле.
Значение по умолчанию: 10000.
Возможные значения:
- Положительное целое число.
Значение по умолчанию: `10000`.
**Пример**
@ -761,6 +765,38 @@ ClickHouse проверяет условия для `min_part_size` и `min_part
<max_thread_pool_size>12000</max_thread_pool_size>
```
## max_thread_pool_free_size {#max-thread-pool-free-size}
Если в глобальном пуле потоков количество **свободных** потоков больше, чем задано параметром `max_thread_pool_free_size`, то ClickHouse освобождает ресурсы, занятые некоторыми потоками. В таком случае размер пула уменьшается. При необходимости потоки будут созданы заново.
Возможные значения:
- Положительное целое число.
Значение по умолчанию: `1000`.
**Пример**
``` xml
<max_thread_pool_free_size>1200</max_thread_pool_free_size>
```
## thread_pool_queue_size {#thread-pool-queue-size}
Максимальное количество задач, которые запланированы для выполнения в глобальном пуле потоков. При увеличении этого параметра возрастает использование памяти. Рекомендуется, чтобы значение этого параметра совпадало со значением параметра [max_thread_pool_size](#max-thread-pool-size).
Возможные значения:
- Положительное целое число.
Значение по умолчанию: `10000`.
**Пример**
``` xml
<thread_pool_queue_size>12000</thread_pool_queue_size>
```
## merge_tree {#server_configuration_parameters-merge_tree}
Тонкая настройка таблиц семейства [MergeTree](../../operations/server-configuration-parameters/settings.md).
@ -1011,7 +1047,7 @@ ClickHouse проверяет условия для `min_part_size` и `min_part
Если таблица не существует, то ClickHouse создаст её. Если структура журнала запросов изменилась при обновлении сервера ClickHouse, то таблица со старой структурой переименовывается, а новая таблица создается автоматически.
**Example**
**Пример**
``` xml
<query_views_log>
@ -1075,9 +1111,8 @@ Parameters:
## query_masking_rules {#query-masking-rules}
Правила основанные на регурялных выражениях, которые будут применены для всех запросов а также для всех сообщений перед сохранением их в лог на сервере,
`system.query_log`, `system.text_log`, `system.processes` таблицы, а также в логах отсылаемых клиенту. Это позволяет предотвратить
утечку конфиденциальных данных из SQL запросов (такие как имена, электронные письма, личные идентификаторы или номера кредитных карт) в логи.
Правила, основанные на регулярных выражениях, которые будут применены для всех запросов, а также для всех сообщений перед сохранением их в лог на сервере,
`system.query_log`, `system.text_log`, `system.processes` таблицы, а также в логах, отсылаемых клиенту. Это позволяет предотвратить утечку конфиденциальных данных из SQL запросов (такие как имена, электронные письма, личные идентификаторы или номера кредитных карт) в логи.
**Пример**
@ -1096,7 +1131,7 @@ Parameters:
- `regexp` - совместимое с RE2 регулярное выражение (обязательное)
- `replace` - строка замены для конфиденциальных данных (опционально, по умолчанию - шесть звездочек)
Правила маскировки применяются ко всему запросу (для предотвращения утечки конфиденциальных данных из неправильно оформленных / не интерпритируемых запросов).
Правила маскировки применяются ко всему запросу (для предотвращения утечки конфиденциальных данных из неправильно оформленных / не интерпретируемых запросов).
`system.events` таблица содержит счетчик `QueryMaskingRulesMatch` который считает общее кол-во совпадений правил маскировки.
@ -1418,7 +1453,7 @@ ClickHouse использует ZooKeeper для хранения метадан
Также вы можете добавить секции `memory` — означает хранение информации только в памяти, без записи на диск, и `ldap` — означает хранения информации на [LDAP-сервере](https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol).
Чтобы добавить LDAP-сервер в качестве удаленного каталога пользователей, которые не определены локально, определите один раздел `ldap` со следующими параметрами:
- `server` — имя одного из LDAP-серверов, определенных в секции `ldap_servers` конфигурациионного файла. Этот параметр явялется необязательным и может быть пустым.
- `server` — имя одного из LDAP-серверов, определенных в секции `ldap_servers` конфигурационного файла. Этот параметр является необязательным и может быть пустым.
- `roles` — раздел со списком локально определенных ролей, которые будут назначены каждому пользователю, полученному с LDAP-сервера. Если роли не заданы, пользователь не сможет выполнять никаких действий после аутентификации. Если какая-либо из перечисленных ролей не определена локально во время проверки подлинности, попытка проверки подлинности завершится неудачей, как если бы предоставленный пароль был неверным.
**Пример**

3
docs/ru/sql-reference/statements/select/group-by.md
View File

@ -203,6 +203,9 @@ SELECT year, month, day, count(*) FROM t GROUP BY year, month, day WITH CUBE;
- В `Pretty*` форматах, строка выводится в виде отдельной таблицы после основного результата.
- В других форматах она не доступна.
!!! note "Примечание"
totals выводится только в результатах запросов `SELECT`, и не вывоводится в `INSERT INTO ... SELECT`.
При использовании секции [HAVING](having.md) поведение `WITH TOTALS` контролируется настройкой `totals_mode`.
### Настройка обработки итогов {#configuring-totals-processing}

2
docs/ru/sql-reference/statements/select/order-by.md
View File

@ -271,7 +271,7 @@ SELECT * FROM collate_test ORDER BY s ASC COLLATE 'en';
## Модификатор ORDER BY expr WITH FILL {#orderby-with-fill}
Этот модификатор также может быть скобинирован с модификатором [LIMIT ... WITH TIES](../../../sql-reference/statements/select/limit.md#limit-with-ties)
Этот модификатор также может быть скомбинирован с модификатором [LIMIT ... WITH TIES](../../../sql-reference/statements/select/limit.md#limit-with-ties)
Модификатор `WITH FILL` может быть установлен после `ORDER BY expr` с опциональными параметрами `FROM expr`, `TO expr` и `STEP expr`.
Все пропущенные значения для колонки `expr` будут заполнены значениями, соответствующими предполагаемой последовательности значений колонки, другие колонки будут заполнены значениями по умолчанию.

18
docs/zh/sql-reference/functions/window-view-functions.md → docs/zh/sql-reference/functions/time-window-functions.md
View File

@ -1,13 +1,13 @@
---
toc_priority: 68
toc_title: Window View
toc_title: 时间窗口
---
# Window View 函数{#window-view-han-shu}
# 时间窗口函数 {#time-window-han-shu}
Window view函数用于获取窗口的起始(包含边界)和结束时间(不包含边界)。系统支持的window view函数如下：
时间窗口函数用于获取窗口的起始(包含边界)和结束时间(不包含边界)。系统支持的时间窗口函数如下：
## tumble {#window-view-functions-tumble}
## tumble {#time-window-functions-tumble}
tumble窗口是连续的、不重叠的固定大小(`interval`)时间窗口。
@ -42,7 +42,7 @@ SELECT tumble(now(), toIntervalDay('1'))
└───────────────────────────────────────────────┘
```
## hop {#window-view-functions-hop}
## hop {#time-window-functions-hop}
hop窗口是一个固定大小(`window_interval`)的时间窗口，并按照一个固定的滑动间隔(`hop_interval`)滑动。当滑动间隔小于窗口大小时，滑动窗口间存在重叠，此时一个数据可能存在于多个窗口。
@ -79,7 +79,7 @@ SELECT hop(now(), INTERVAL '1' SECOND, INTERVAL '2' SECOND)
└───────────────────────────────────────────────────────────┘
```
## tumbleStart {#window-view-functions-tumblestart}
## tumbleStart {#time-window-functions-tumblestart}
返回tumble窗口的开始时间(包含边界)。
@ -87,7 +87,7 @@ SELECT hop(now(), INTERVAL '1' SECOND, INTERVAL '2' SECOND)
tumbleStart(time_attr, interval [, timezone]);
```
## tumbleEnd {#window-view-functions-tumbleend}
## tumbleEnd {#time-window-functions-tumbleend}
返回tumble窗口的结束时间(不包含边界)。
@ -95,7 +95,7 @@ tumbleStart(time_attr, interval [, timezone]);
tumbleEnd(time_attr, interval [, timezone]);
```
## hopStart {#window-view-functions-hopstart}
## hopStart {#time-window-functions-hopstart}
返回hop窗口的开始时间(包含边界)。
@ -103,7 +103,7 @@ tumbleEnd(time_attr, interval [, timezone]);
hopStart(time_attr, hop_interval, window_interval [, timezone]);
```
## hopEnd {#window-view-functions-hopend}
## hopEnd {#time-window-functions-hopend}
返回hop窗口的结束时间(不包含边界)。

20
docs/zh/sql-reference/statements/create/view.md
View File

@ -250,28 +250,28 @@ Code: 60. DB::Exception: Received from localhost:9000. DB::Exception: Table defa
`set allow_experimental_window_view = 1`。
``` sql
CREATE WINDOW VIEW [IF NOT EXISTS] [db.]table_name [TO [db.]table_name] [ENGINE = engine] [WATERMARK = strategy] [ALLOWED_LATENESS = interval_function] AS SELECT ... GROUP BY window_view_function
CREATE WINDOW VIEW [IF NOT EXISTS] [db.]table_name [TO [db.]table_name] [ENGINE = engine] [WATERMARK = strategy] [ALLOWED_LATENESS = interval_function] AS SELECT ... GROUP BY time_window_function
```
Window view可以通过时间窗口聚合数据，并在满足窗口触发条件时自动触发对应窗口计算。其通过将计算状态保存降低处理延迟，支持将处理结果输出至目标表或通过`WATCH`语句输出至终端。
创建window view的方式和创建物化视图类似。Window view使用默认为`AggregatingMergeTree`的内部存储引擎存储计算中间状态。
### Window View 函数{#window-view-han-shu}
### 时间窗口函数 {#window-view-shi-jian-chuang-kou-han-shu}
[Window view函数](../../functions/window-view-functions.md)用于获取窗口的起始和结束时间。Window view需要和window view函数配合使用。
[时间窗口函数](../../functions/time-window-functions.md)用于获取窗口的起始和结束时间。Window view需要和时间窗口函数配合使用。
### 时间属性{#window-view-shi-jian-shu-xing}
### 时间属性 {#window-view-shi-jian-shu-xing}
Window view 支持**处理时间**和**事件时间**两种时间类型。
**处理时间**为默认时间类型，该模式下window view使用本地机器时间计算窗口数据。“处理时间”时间类型计算简单，但具有不确定性。该模式下时间可以为window view函数的第一个参数`time_attr`，或通过函数`now()`使用当前机器时间。下面的例子展示了使用“处理时间”创建的window view的例子。
**处理时间**为默认时间类型，该模式下window view使用本地机器时间计算窗口数据。“处理时间”时间类型计算简单，但具有不确定性。该模式下时间可以为时间窗口函数的第一个参数`time_attr`，或通过函数`now()`使用当前机器时间。下面的例子展示了使用“处理时间”创建window view的例子。
``` sql
CREATE WINDOW VIEW wv AS SELECT count(number), tumbleStart(w_id) as w_start from date GROUP BY tumble(now(), INTERVAL '5' SECOND) as w_id
```
**事件时间** 是事件真实发生的时间，该时间往往在事件发生时便嵌入数据记录。事件时间处理提供较高的确定性，可以处理乱序数据以及迟到数据。Window view 通过水位线(`WATERMARK`)启用事件时间处理。
**事件时间** 是事件真实发生的时间，该时间往往在事件发生时便嵌入数据记录。事件时间处理提供较高的确定性，可以处理乱序数据以及迟到数据。Window view通过水位线(`WATERMARK`)启用事件时间处理。
Window view提供如下三种水位线策略：
@ -295,7 +295,7 @@ CREATE WINDOW VIEW test.wv TO test.dst WATERMARK=ASCENDING ALLOWED_LATENESS=INTE
需要注意的是，迟到消息需要更新之前的处理结果。与在窗口结束时触发不同，迟到消息到达时window view会立即触发计算。因此，会导致同一个窗口输出多次计算结果。用户需要注意这种情况，并消除重复结果。
### 新窗口监控{#window-view-xin-chuang-kou-jian-kong}
### 新窗口监控 {#window-view-xin-chuang-kou-jian-kong}
Window view可以通过`WATCH`语句将处理结果推送至终端，或通过`TO`语句将结果推送至数据表。
@ -305,12 +305,12 @@ WATCH [db.]name [LIMIT n]
`WATCH`语句和`LIVE VIEW`中的类似。支持设置`LIMIT`参数，输出消息数目达到`LIMIT`限制时结束查询。
### 设置{#window-view-she-zhi}
### 设置 {#window-view-she-zhi}
- `window_view_clean_interval`: window view清除过期数据间隔(单位为秒)。系统会定期清除过期数据，尚未触发的窗口数据不会被清除。
- `window_view_heartbeat_interval`: 用于判断watch查询活跃的心跳时间间隔。
### 示例{#window-view-shi-li}
### 示例 {#window-view-shi-li}
假设我们需要每10秒统计一次`data`表中的点击日志，且`data`表的结构如下：
@ -352,7 +352,7 @@ CREATE WINDOW VIEW wv TO dst AS SELECT count(id), tumbleStart(w_id) as window_st
ClickHouse测试中提供了更多的示例(以`*window_view*`命名)。
### Window View 使用场景{#window-view-shi-yong-chang-jing}
### Window View 使用场景 {#window-view-shi-yong-chang-jing}
Window view 在以下场景有用：

4
programs/client/Client.cpp
View File

@ -20,9 +20,7 @@
#include <base/argsToConfig.h>
#include <base/find_symbols.h>
#if !defined(ARCADIA_BUILD)
# include <Common/config_version.h>
#endif
#include <Common/config_version.h>
#include <Common/Exception.h>
#include <Common/formatReadable.h>
#include <Common/TerminalSize.h>

6
programs/keeper/Keeper.cpp
View File

@ -22,10 +22,8 @@
#include <pwd.h>
#include <Coordination/FourLetterCommand.h>
#if !defined(ARCADIA_BUILD)
# include "config_core.h"
# include "Common/config_version.h"
#endif
#include "config_core.h"
#include "Common/config_version.h"
#if USE_SSL
# include <Poco/Net/Context.h>

11
programs/local/LocalServer.cpp
View File

@ -388,12 +388,6 @@ void LocalServer::setupUsers()
}
String LocalServer::getQueryTextPrefix()
{
return getInitialCreateTableQuery();
}
void LocalServer::connect()
{
connection_parameters = ConnectionParameters(config());
@ -463,6 +457,10 @@ try
}
#endif
String initial_query = getInitialCreateTableQuery();
if (!initial_query.empty())
processQueryText(initial_query);
if (is_interactive && !delayed_interactive)
{
runInteractive();
@ -729,7 +727,6 @@ void LocalServer::printHelpMessage([[maybe_unused]] const OptionsDescription & o
void LocalServer::addOptions(OptionsDescription & options_description)
{
options_description.main_description->add_options()
("database,d", po::value<std::string>(), "database")
("table,N", po::value<std::string>(), "name of the initial table")
/// If structure argument is omitted then initial query is not generated

1
programs/local/LocalServer.h
View File

@ -37,7 +37,6 @@ protected:
void processError(const String & query) const override;
String getName() const override { return "local"; }
String getQueryTextPrefix() override;
void printHelpMessage(const OptionsDescription & options_description) override;
void addOptions(OptionsDescription & options_description) override;

4
programs/main.cpp
View File

@ -13,9 +13,7 @@
#include <tuple>
#include <utility> /// pair
#if !defined(ARCADIA_BUILD)
# include "config_tools.h"
#endif
#include "config_tools.h"
#include <Common/StringUtils/StringUtils.h>
#include <Common/getHashOfLoadedBinary.h>

8
programs/server/Server.cpp
View File

@ -82,10 +82,8 @@
#include <Compression/CompressionCodecEncrypted.h>
#include <filesystem>
#if !defined(ARCADIA_BUILD)
# include "config_core.h"
# include "Common/config_version.h"
#endif
#include "config_core.h"
#include "Common/config_version.h"
#if defined(OS_LINUX)
# include <sys/mman.h>
@ -96,7 +94,7 @@
#endif
#if USE_SSL
# if USE_INTERNAL_SSL_LIBRARY && !defined(ARCADIA_BUILD)
# if USE_INTERNAL_SSL_LIBRARY
# include <Compression/CompressionCodecEncrypted.h>
# endif
# include <Poco/Net/Context.h>

4
programs/server/config.xml
View File

@ -293,6 +293,10 @@
<max_thread_pool_size>10000</max_thread_pool_size>
<!-- Number of workers to recycle connections in background (see also drain_timeout).
If the pool is full, connection will be drained synchronously. -->
<!-- <max_threads_for_connection_collector>10</max_threads_for_connection_collector> -->
<!-- On memory constrained environments you may have to set this to value larger than 1.
-->
<max_server_memory_usage_to_ram_ratio>0.9</max_server_memory_usage_to_ram_ratio>

2
release
View File

@ -87,7 +87,7 @@ if [ -z "$NO_BUILD" ] ; then
# Build (only binary packages).
debuild --preserve-env -e PATH \
-e DEB_CC=$DEB_CC -e DEB_CXX=$DEB_CXX -e CMAKE_FLAGS="$CMAKE_FLAGS" \
-b ${DEBUILD_NOSIGN_OPTIONS} ${DEBUILD_NODEPS_OPTIONS}
-b ${DEBUILD_NOSIGN_OPTIONS} ${DEBUILD_NODEPS_OPTIONS} ${DEB_ARCH_FLAG}
fi
if [ -n "$MAKE_RPM" ]; then

134
src/Access/EnabledQuota.cpp
View File

@ -2,6 +2,7 @@
#include <Access/QuotaUsage.h>
#include <Common/Exception.h>
#include <Common/quoteString.h>
#include <Common/thread_local_rng.h>
#include <base/chrono_io.h>
#include <base/range.h>
#include <boost/smart_ptr/make_shared.hpp>
@ -15,6 +16,7 @@ namespace ErrorCodes
extern const int QUOTA_EXPIRED;
}
struct EnabledQuota::Impl
{
[[noreturn]] static void throwQuotaExceed(
@ -35,54 +37,6 @@ struct EnabledQuota::Impl
}
/// Returns the end of the current interval. If the passed `current_time` is greater than that end,
/// the function automatically recalculates the interval's end by adding the interval's duration
/// one or more times until the interval's end is greater than `current_time`.
/// If that recalculation occurs the function also resets amounts of resources used and sets the variable
/// `counters_were_reset`.
static std::chrono::system_clock::time_point getEndOfInterval(
const Interval & interval, std::chrono::system_clock::time_point current_time, bool & counters_were_reset)
{
auto & end_of_interval = interval.end_of_interval;
auto end_loaded = end_of_interval.load();
auto end = std::chrono::system_clock::time_point{end_loaded};
if (current_time < end)
{
counters_were_reset = false;
return end;
}
bool need_reset_counters = false;
do
{
/// Calculate the end of the next interval:
/// | X |
/// end current_time next_end = end + duration * n
/// where n is an integer number, n >= 1.
const auto duration = interval.duration;
UInt64 n = static_cast<UInt64>((current_time - end + duration) / duration);
end = end + duration * n;
if (end_of_interval.compare_exchange_strong(end_loaded, end.time_since_epoch()))
{
/// We reset counters only if the interval's end has been calculated before.
/// If it hasn't we just calculate the interval's end for the first time and don't reset counters yet.
need_reset_counters = (end_loaded.count() != 0);
break;
}
end = std::chrono::system_clock::time_point{end_loaded};
}
while (current_time >= end);
if (need_reset_counters)
{
boost::range::fill(interval.used, 0);
counters_were_reset = true;
}
return end;
}
static void used(
const String & user_name,
const Intervals & intervals,
@ -91,24 +45,22 @@ struct EnabledQuota::Impl
std::chrono::system_clock::time_point current_time,
bool check_exceeded)
{
auto quota_type_i = static_cast<size_t>(quota_type);
for (const auto & interval : intervals.intervals)
{
auto quota_type_i = static_cast<size_t>(quota_type);
QuotaValue used = (interval.used[quota_type_i] += value);
QuotaValue max = interval.max[quota_type_i];
if (!max)
continue;
if (used > max)
{
bool counters_were_reset = false;
auto end_of_interval = getEndOfInterval(interval, current_time, counters_were_reset);
auto end_of_interval = interval.getEndOfInterval(current_time, counters_were_reset);
if (counters_were_reset)
{
used = (interval.used[quota_type_i] += value);
if ((used > max) && check_exceeded)
throwQuotaExceed(user_name, intervals.quota_name, quota_type, used, max, interval.duration, end_of_interval);
}
else if (check_exceeded)
if (check_exceeded && (used > max))
throwQuotaExceed(user_name, intervals.quota_name, quota_type, used, max, interval.duration, end_of_interval);
}
}
@ -127,10 +79,11 @@ struct EnabledQuota::Impl
QuotaValue max = interval.max[quota_type_i];
if (!max)
continue;
if (used > max)
{
bool counters_were_reset = false;
std::chrono::system_clock::time_point end_of_interval = getEndOfInterval(interval, current_time, counters_were_reset);
auto end_of_interval = interval.getEndOfInterval(current_time, counters_were_reset);
if (!counters_were_reset)
throwQuotaExceed(user_name, intervals.quota_name, quota_type, used, max, interval.duration, end_of_interval);
}
@ -145,17 +98,32 @@ struct EnabledQuota::Impl
for (auto quota_type : collections::range(QuotaType::MAX))
checkExceeded(user_name, intervals, quota_type, current_time);
}
static std::chrono::system_clock::duration randomDuration(std::chrono::seconds max)
{
auto count = std::chrono::duration_cast<std::chrono::system_clock::duration>(max).count();
std::uniform_int_distribution<Int64> distribution{0, count - 1};
return std::chrono::system_clock::duration(distribution(thread_local_rng));
}
};
EnabledQuota::Interval::Interval()
EnabledQuota::Interval::Interval(std::chrono::seconds duration_, bool randomize_interval_, std::chrono::system_clock::time_point current_time_)
: duration(duration_) , randomize_interval(randomize_interval_)
{
std::chrono::system_clock::time_point initial_end{};
if (randomize_interval_)
initial_end += Impl::randomDuration(duration_);
end_of_interval = initial_end.time_since_epoch();
for (auto quota_type : collections::range(QuotaType::MAX))
{
auto quota_type_i = static_cast<size_t>(quota_type);
used[quota_type_i].store(0);
max[quota_type_i] = 0;
}
getEndOfInterval(current_time_); /// Force updating the end of the interval for the first time.
}
@ -177,6 +145,55 @@ EnabledQuota::Interval & EnabledQuota::Interval::operator =(const Interval & src
}
/// Returns the end of the current interval. If the passed `current_time` is greater than that end,
/// the function automatically recalculates the interval's end by adding the interval's duration
/// one or more times until the interval's end is greater than `current_time`.
/// If that recalculation occurs the function also resets amounts of resources used and sets the variable
/// `counters_were_reset`.
std::chrono::system_clock::time_point EnabledQuota::Interval::getEndOfInterval(std::chrono::system_clock::time_point current_time) const
{
bool counters_were_reset;
return getEndOfInterval(current_time, counters_were_reset);
}
std::chrono::system_clock::time_point EnabledQuota::Interval::getEndOfInterval(std::chrono::system_clock::time_point current_time, bool & counters_were_reset) const
{
auto end_loaded = end_of_interval.load();
auto end = std::chrono::system_clock::time_point{end_loaded};
if (current_time < end)
{
counters_were_reset = false;
return end;
}
bool need_reset_counters = false;
do
{
/// Calculate the end of the next interval:
/// | X |
/// end current_time next_end = end + duration * n
/// where n is an integer number, n >= 1.
UInt64 n = static_cast<UInt64>((current_time - end + duration) / duration);
end = end + duration * n;
if (end_of_interval.compare_exchange_strong(end_loaded, end.time_since_epoch()))
{
need_reset_counters = true;
break;
}
end = std::chrono::system_clock::time_point{end_loaded};
}
while (current_time >= end);
if (need_reset_counters)
{
boost::range::fill(used, 0);
counters_were_reset = true;
}
return end;
}
std::optional<QuotaUsage> EnabledQuota::Intervals::getUsage(std::chrono::system_clock::time_point current_time) const
{
if (!quota_id)
@ -192,8 +209,7 @@ std::optional<QuotaUsage> EnabledQuota::Intervals::getUsage(std::chrono::system_
auto & out = usage.intervals.back();
out.duration = in.duration;
out.randomize_interval = in.randomize_interval;
bool counters_were_reset = false;
out.end_of_interval = Impl::getEndOfInterval(in, current_time, counters_were_reset);
out.end_of_interval = in.getEndOfInterval(current_time);
for (auto quota_type : collections::range(QuotaType::MAX))
{
auto quota_type_i = static_cast<size_t>(quota_type);

6
src/Access/EnabledQuota.h
View File

@ -73,9 +73,13 @@ private:
bool randomize_interval = false;
mutable std::atomic<std::chrono::system_clock::duration> end_of_interval;
Interval();
Interval(std::chrono::seconds duration_, bool randomize_interval_, std::chrono::system_clock::time_point current_time_);
Interval(const Interval & src) { *this = src; }
Interval & operator =(const Interval & src);
std::chrono::system_clock::time_point getEndOfInterval(std::chrono::system_clock::time_point current_time) const;
std::chrono::system_clock::time_point getEndOfInterval(std::chrono::system_clock::time_point current_time, bool & counters_were_reset) const;
};
struct Intervals

29
src/Access/QuotaCache.cpp
View File

@ -4,7 +4,6 @@
#include <Access/QuotaUsage.h>
#include <Access/AccessControl.h>
#include <Common/Exception.h>
#include <Common/thread_local_rng.h>
#include <base/range.h>
#include <boost/range/adaptor/map.hpp>
#include <boost/range/algorithm/copy.hpp>
@ -22,17 +21,6 @@ namespace ErrorCodes
}
namespace
{
std::chrono::system_clock::duration randomDuration(std::chrono::seconds max)
{
auto count = std::chrono::duration_cast<std::chrono::system_clock::duration>(max).count();
std::uniform_int_distribution<Int64> distribution{0, count - 1};
return std::chrono::system_clock::duration(distribution(thread_local_rng));
}
}
void QuotaCache::QuotaInfo::setQuota(const QuotaPtr & quota_, const UUID & quota_id_)
{
quota = quota_;
@ -94,18 +82,21 @@ boost::shared_ptr<const EnabledQuota::Intervals> QuotaCache::QuotaInfo::getOrBui
auto it = key_to_intervals.find(key);
if (it != key_to_intervals.end())
return it->second;
return rebuildIntervals(key);
return rebuildIntervals(key, std::chrono::system_clock::now());
}
void QuotaCache::QuotaInfo::rebuildAllIntervals()
{
if (key_to_intervals.empty())
return;
auto current_time = std::chrono::system_clock::now();
for (const String & key : key_to_intervals | boost::adaptors::map_keys)
rebuildIntervals(key);
rebuildIntervals(key, current_time);
}
boost::shared_ptr<const EnabledQuota::Intervals> QuotaCache::QuotaInfo::rebuildIntervals(const String & key)
boost::shared_ptr<const EnabledQuota::Intervals> QuotaCache::QuotaInfo::rebuildIntervals(const String & key, std::chrono::system_clock::time_point current_time)
{
auto new_intervals = boost::make_shared<Intervals>();
new_intervals->quota_name = quota->getName();
@ -115,14 +106,8 @@ boost::shared_ptr<const EnabledQuota::Intervals> QuotaCache::QuotaInfo::rebuildI
intervals.reserve(quota->all_limits.size());
for (const auto & limits : quota->all_limits)
{
intervals.emplace_back();
intervals.emplace_back(limits.duration, limits.randomize_interval, current_time);
auto & interval = intervals.back();
interval.duration = limits.duration;
std::chrono::system_clock::time_point end_of_interval{};
interval.randomize_interval = limits.randomize_interval;
if (limits.randomize_interval)
end_of_interval += randomDuration(limits.duration);
interval.end_of_interval = end_of_interval.time_since_epoch();
for (auto quota_type : collections::range(QuotaType::MAX))
{
auto quota_type_i = static_cast<size_t>(quota_type);

2
src/Access/QuotaCache.h
View File

@ -43,7 +43,7 @@ private:
String calculateKey(const EnabledQuota & enabled_quota) const;
boost::shared_ptr<const Intervals> getOrBuildIntervals(const String & key);
boost::shared_ptr<const Intervals> rebuildIntervals(const String & key);
boost::shared_ptr<const Intervals> rebuildIntervals(const String & key, std::chrono::system_clock::time_point current_time);
void rebuildAllIntervals();
QuotaPtr quota;

13
src/AggregateFunctions/AggregateFunctionAvg.h
View File

@ -218,9 +218,9 @@ public:
using ColVecType = ColumnVectorOrDecimal<T>;
void NO_SANITIZE_UNDEFINED add(AggregateDataPtr __restrict place, const IColumn ** columns, size_t row_num, Arena *) const final
void add(AggregateDataPtr __restrict place, const IColumn ** columns, size_t row_num, Arena *) const final
{
this->data(place).numerator += static_cast<const ColVecType &>(*columns[0]).getData()[row_num];
increment(place, static_cast<const ColVecType &>(*columns[0]).getData()[row_num]);
++this->data(place).denominator;
}
@ -240,7 +240,7 @@ public:
sum_data.addMany(column.getData().data(), batch_size);
this->data(place).denominator += batch_size;
}
this->data(place).numerator += sum_data.sum;
increment(place, sum_data.sum);
}
void addBatchSinglePlaceNotNull(
@ -270,7 +270,7 @@ public:
sum_data.addManyNotNull(column.getData().data(), null_map, batch_size);
this->data(place).denominator += batch_size - countBytesInFilter(null_map, batch_size);
}
this->data(place).numerator += sum_data.sum;
increment(place, sum_data.sum);
}
String getName() const override { return "avg"; }
@ -298,5 +298,10 @@ public:
#endif
private:
void NO_SANITIZE_UNDEFINED increment(AggregateDataPtr __restrict place, Numerator inc) const
{
this->data(place).numerator += inc;
}
};
}

9
src/CMakeLists.txt
View File

@ -106,6 +106,10 @@ if (USE_AWS_S3)
add_headers_and_sources(dbms Disks/S3)
endif()
if (USE_AZURE_BLOB_STORAGE)
add_headers_and_sources(dbms Disks/BlobStorage)
endif()
if (USE_HDFS)
add_headers_and_sources(dbms Storages/HDFS)
add_headers_and_sources(dbms Disks/HDFS)
@ -450,6 +454,11 @@ if (USE_AWS_S3)
target_include_directories (clickhouse_common_io SYSTEM BEFORE PUBLIC ${AWS_S3_INCLUDE_DIR})
endif()
if (USE_AZURE_BLOB_STORAGE)
target_link_libraries (clickhouse_common_io PUBLIC ${AZURE_BLOB_STORAGE_LIBRARY})
target_include_directories (clickhouse_common_io SYSTEM BEFORE PUBLIC ${AZURE_SDK_INCLUDES})
endif()
if (USE_S2_GEOMETRY)
dbms_target_link_libraries (PUBLIC ${S2_GEOMETRY_LIBRARY})
dbms_target_include_directories (SYSTEM BEFORE PUBLIC ${S2_GEOMETRY_INCLUDE_DIR})

11
src/Client/ClientBase.cpp
View File

@ -1414,9 +1414,6 @@ void ClientBase::runInteractive()
highlight_callback = highlight;
ReplxxLineReader lr(*suggest, history_file, config().has("multiline"), query_extenders, query_delimiters, highlight_callback);
#elif defined(USE_READLINE) && USE_READLINE
ReadlineLineReader lr(*suggest, history_file, config().has("multiline"), query_extenders, query_delimiters);
#else
LineReader lr(history_file, config().has("multiline"), query_extenders, query_delimiters);
#endif
@ -1494,17 +1491,14 @@ void ClientBase::runNonInteractive()
{
auto process_multi_query_from_file = [&](const String & file)
{
auto text = getQueryTextPrefix();
String queries_from_file;
ReadBufferFromFile in(file);
readStringUntilEOF(queries_from_file, in);
text += queries_from_file;
return executeMultiQuery(text);
return executeMultiQuery(queries_from_file);
};
/// Read all queries into `text`.
for (const auto & queries_file : queries_files)
{
for (const auto & interleave_file : interleave_queries_files)
@ -1519,9 +1513,6 @@ void ClientBase::runNonInteractive()
}
String text;
if (is_multiquery)
text = getQueryTextPrefix();
if (config().has("query"))
{
text += config().getRawString("query"); /// Poco configuration should not process substitutions in form of ${...} inside query.

6
src/Client/ClientBase.h
View File

@ -78,9 +78,6 @@ protected:
String & query_to_execute, ASTPtr & parsed_query, const String & all_queries_text,
std::optional<Exception> & current_exception);
/// For non-interactive multi-query mode get queries text prefix.
virtual String getQueryTextPrefix() { return ""; }
static void clearTerminal();
void showClientVersion();
@ -100,9 +97,10 @@ protected:
const std::vector<Arguments> & external_tables_arguments) = 0;
virtual void processConfig() = 0;
private:
protected:
bool processQueryText(const String & text);
private:
void receiveResult(ASTPtr parsed_query);
bool receiveAndProcessPacket(ASTPtr parsed_query, bool cancelled);
void receiveLogs(ASTPtr parsed_query);

7
src/Client/IConnections.cpp
View File

@ -25,7 +25,12 @@ struct PocoSocketWrapper : public Poco::Net::SocketImpl
void IConnections::DrainCallback::operator()(int fd, Poco::Timespan, const std::string fd_description) const
{
if (!PocoSocketWrapper(fd).poll(drain_timeout, Poco::Net::Socket::SELECT_READ))
throw Exception(ErrorCodes::SOCKET_TIMEOUT, "Read timeout while draining from {}", fd_description);
{
throw Exception(ErrorCodes::SOCKET_TIMEOUT,
"Read timeout ({} ms) while draining from {}",
drain_timeout.totalMilliseconds(),
fd_description);
}
}
}

9
src/Client/MultiplexedConnections.cpp
View File

@ -395,17 +395,17 @@ MultiplexedConnections::ReplicaState & MultiplexedConnections::getReplicaForRead
read_list.push_back(*connection->socket);
}
auto timeout = is_draining ? drain_timeout : receive_timeout;
int n = Poco::Net::Socket::select(
read_list,
write_list,
except_list,
is_draining ? drain_timeout : receive_timeout);
timeout);
/// We treat any error as timeout for simplicity.
/// And we also check if read_list is still empty just in case.
if (n <= 0 || read_list.empty())
{
auto err_msg = fmt::format("Timeout exceeded while reading from {}", dumpAddressesUnlocked());
for (ReplicaState & state : replica_states)
{
Connection * connection = state.connection;
@ -415,7 +415,10 @@ MultiplexedConnections::ReplicaState & MultiplexedConnections::getReplicaForRead
invalidateReplica(state);
}
}
throw Exception(err_msg, ErrorCodes::TIMEOUT_EXCEEDED);
throw Exception(ErrorCodes::TIMEOUT_EXCEEDED,
"Timeout ({} ms) exceeded while reading from {}",
timeout.totalMilliseconds(),
dumpAddressesUnlocked());
}
}

2
src/Common/ErrorCodes.cpp
View File

@ -470,6 +470,7 @@
M(497, ACCESS_DENIED) \
M(498, LIMIT_BY_WITH_TIES_IS_NOT_SUPPORTED) \
M(499, S3_ERROR) \
M(500, BLOB_STORAGE_ERROR) \
M(501, CANNOT_CREATE_DATABASE) \
M(502, CANNOT_SIGQUEUE) \
M(503, AGGREGATE_FUNCTION_THROW) \
@ -601,6 +602,7 @@
M(631, UNKNOWN_FILE_SIZE) \
M(632, UNEXPECTED_DATA_AFTER_PARSED_VALUE) \
M(633, QUERY_IS_NOT_SUPPORTED_IN_WINDOW_VIEW) \
M(634, MONGODB_ERROR) \
\
M(999, KEEPER_EXCEPTION) \
M(1000, POCO_EXCEPTION) \

10
src/Common/SparseHashMap.h
View File

@ -1,10 +0,0 @@
#pragma once
/// SparseHashMap is a wrapper for google::sparse_hash_map.
#include <sparsehash/sparse_hash_map>
template <class Key, class T, class HashFcn = std::hash<Key>,
class EqualKey = std::equal_to<Key>,
class Alloc = google::libc_allocator_with_realloc<std::pair<const Key, T>>>
using SparseHashMap = google::sparse_hash_map<Key, T, HashFcn, EqualKey, Alloc>;

1
src/Common/config.h.in
View File

@ -9,6 +9,7 @@
#cmakedefine01 USE_HDFS
#cmakedefine01 USE_INTERNAL_HDFS3_LIBRARY
#cmakedefine01 USE_AWS_S3
#cmakedefine01 USE_AZURE_BLOB_STORAGE
#cmakedefine01 USE_BROTLI
#cmakedefine01 USE_UNWIND
#cmakedefine01 USE_OPENCL

17
src/Common/getRandomASCIIString.cpp Normal file
View File

@ -0,0 +1,17 @@
#include <Common/getRandomASCIIString.h>
#include <Common/thread_local_rng.h>
#include <random>
namespace DB
{
String getRandomASCIIString(size_t len, char first, char last)
{
std::uniform_int_distribution<int> distribution(first, last);
String res(len, ' ');
for (auto & c : res)
c = distribution(thread_local_rng);
return res;
}
}

10
src/Common/getRandomASCIIString.h Normal file
View File

@ -0,0 +1,10 @@
#pragma once
#include <Core/Types.h>
namespace DB
{
/// Slow random string. Useful for random names and things like this. Not for
/// generating data.
String getRandomASCIIString(size_t len = 32, char first = 'a', char last = 'z');
}

2
src/Coordination/tests/gtest_coordination.cpp
View File

@ -1,6 +1,5 @@
#include <gtest/gtest.h>
#include <Common/config.h>
#include "config_core.h"
#if USE_NURAFT
@ -15,7 +14,6 @@
#include <Coordination/WriteBufferFromNuraftBuffer.h>
#include <Coordination/ReadBufferFromNuraftBuffer.h>
#include <IO/ReadBufferFromString.h>
#include <IO/WriteBufferFromString.h>
#include <Common/ZooKeeper/ZooKeeperCommon.h>
#include <Common/ZooKeeper/ZooKeeperIO.h>
#include <Common/Exception.h>

2
src/Core/Settings.h
View File

@ -55,7 +55,7 @@ class IColumn;
M(Milliseconds, connect_timeout_with_failover_secure_ms, 100, "Connection timeout for selecting first healthy replica (for secure connections).", 0) \
M(Seconds, receive_timeout, DBMS_DEFAULT_RECEIVE_TIMEOUT_SEC, "", 0) \
M(Seconds, send_timeout, DBMS_DEFAULT_SEND_TIMEOUT_SEC, "", 0) \
M(Seconds, drain_timeout, 3, "", 0) \
M(Seconds, drain_timeout, 3, "Timeout for draining remote connections, -1 means synchronous drain w/o ignoring errors", 0) \
M(Seconds, tcp_keep_alive_timeout, 290 /* less than DBMS_DEFAULT_RECEIVE_TIMEOUT_SEC */, "The time in seconds the connection needs to remain idle before TCP starts sending keepalive probes", 0) \
M(Milliseconds, hedged_connection_timeout_ms, 100, "Connection timeout for establishing connection with replica for Hedged requests", 0) \
M(Milliseconds, receive_data_timeout_ms, 2000, "Connection timeout for receiving first packet of data or packet with positive progress from replica", 0) \

401
src/DataStreams/PushingToViewsBlockOutputStream.cpp
View File

@ -1,401 +0,0 @@
#include <DataStreams/ConvertingBlockInputStream.h>
#include <DataStreams/PushingToViewsBlockOutputStream.h>
#include <DataStreams/SquashingBlockInputStream.h>
#include <DataStreams/OneBlockInputStream.h>
#include <DataStreams/MaterializingBlockInputStream.h>
#include <DataStreams/copyData.h>
#include <DataTypes/NestedUtils.h>
#include <Interpreters/InterpreterSelectQuery.h>
#include <Interpreters/InterpreterInsertQuery.h>
#include <Interpreters/Context.h>
#include <Parsers/ASTInsertQuery.h>
#include <Common/CurrentThread.h>
#include <Common/setThreadName.h>
#include <Common/ThreadPool.h>
#include <Common/checkStackSize.h>
#include <Storages/MergeTree/ReplicatedMergeTreeBlockOutputStream.h>
#include <Storages/StorageValues.h>
#include <Storages/WindowView/StorageWindowView.h>
#include <Storages/LiveView/StorageLiveView.h>
#include <Storages/StorageMaterializedView.h>
#include <common/logger_useful.h>
namespace DB
{
PushingToViewsBlockOutputStream::PushingToViewsBlockOutputStream(
const StoragePtr & storage_,
const StorageMetadataPtr & metadata_snapshot_,
ContextPtr context_,
const ASTPtr & query_ptr_,
bool no_destination)
: WithContext(context_)
, storage(storage_)
, metadata_snapshot(metadata_snapshot_)
, log(&Poco::Logger::get("PushingToViewsBlockOutputStream"))
, query_ptr(query_ptr_)
{
checkStackSize();
/** TODO This is a very important line. At any insertion into the table one of streams should own lock.
* Although now any insertion into the table is done via PushingToViewsBlockOutputStream,
* but it's clear that here is not the best place for this functionality.
*/
addTableLock(
storage->lockForShare(getContext()->getInitialQueryId(), getContext()->getSettingsRef().lock_acquire_timeout));
/// If the "root" table deduplicates blocks, there are no need to make deduplication for children
/// Moreover, deduplication for AggregatingMergeTree children could produce false positives due to low size of inserting blocks
bool disable_deduplication_for_children = false;
if (!getContext()->getSettingsRef().deduplicate_blocks_in_dependent_materialized_views)
disable_deduplication_for_children = !no_destination && storage->supportsDeduplication();
auto table_id = storage->getStorageID();
Dependencies dependencies = DatabaseCatalog::instance().getDependencies(table_id);
/// We need special context for materialized views insertions
if (!dependencies.empty())
{
select_context = Context::createCopy(context);
insert_context = Context::createCopy(context);
const auto & insert_settings = insert_context->getSettingsRef();
// Do not deduplicate insertions into MV if the main insertion is Ok
if (disable_deduplication_for_children)
insert_context->setSetting("insert_deduplicate", Field{false});
// Separate min_insert_block_size_rows/min_insert_block_size_bytes for children
if (insert_settings.min_insert_block_size_rows_for_materialized_views)
insert_context->setSetting("min_insert_block_size_rows", insert_settings.min_insert_block_size_rows_for_materialized_views.value);
if (insert_settings.min_insert_block_size_bytes_for_materialized_views)
insert_context->setSetting("min_insert_block_size_bytes", insert_settings.min_insert_block_size_bytes_for_materialized_views.value);
}
for (const auto & database_table : dependencies)
{
auto dependent_table = DatabaseCatalog::instance().getTable(database_table, getContext());
auto dependent_metadata_snapshot = dependent_table->getInMemoryMetadataPtr();
ASTPtr query;
BlockOutputStreamPtr out;
if (auto * materialized_view = dynamic_cast<StorageMaterializedView *>(dependent_table.get()))
{
addTableLock(
materialized_view->lockForShare(getContext()->getInitialQueryId(), getContext()->getSettingsRef().lock_acquire_timeout));
StoragePtr inner_table = materialized_view->getTargetTable();
auto inner_table_id = inner_table->getStorageID();
auto inner_metadata_snapshot = inner_table->getInMemoryMetadataPtr();
query = dependent_metadata_snapshot->getSelectQuery().inner_query;
std::unique_ptr<ASTInsertQuery> insert = std::make_unique<ASTInsertQuery>();
insert->table_id = inner_table_id;
/// Get list of columns we get from select query.
auto header = InterpreterSelectQuery(query, select_context, SelectQueryOptions().analyze())
.getSampleBlock();
/// Insert only columns returned by select.
auto list = std::make_shared<ASTExpressionList>();
const auto & inner_table_columns = inner_metadata_snapshot->getColumns();
for (const auto & column : header)
{
/// But skip columns which storage doesn't have.
if (inner_table_columns.hasPhysical(column.name))
list->children.emplace_back(std::make_shared<ASTIdentifier>(column.name));
}
insert->columns = std::move(list);
ASTPtr insert_query_ptr(insert.release());
InterpreterInsertQuery interpreter(insert_query_ptr, insert_context);
BlockIO io = interpreter.execute();
out = io.out;
}
else if (
dynamic_cast<const StorageLiveView *>(dependent_table.get()) || dynamic_cast<const StorageWindowView *>(dependent_table.get()))
out = std::make_shared<PushingToViewsBlockOutputStream>(
dependent_table, dependent_metadata_snapshot, insert_context, ASTPtr(), true);
else
out = std::make_shared<PushingToViewsBlockOutputStream>(
dependent_table, dependent_metadata_snapshot, insert_context, ASTPtr());
views.emplace_back(ViewInfo{std::move(query), database_table, std::move(out), nullptr, 0 /* elapsed_ms */});
}
/// Do not push to destination table if the flag is set
if (!no_destination)
{
output = storage->write(query_ptr, storage->getInMemoryMetadataPtr(), getContext());
replicated_output = dynamic_cast<ReplicatedMergeTreeBlockOutputStream *>(output.get());
}
}
Block PushingToViewsBlockOutputStream::getHeader() const
{
/// If we don't write directly to the destination
/// then expect that we're inserting with precalculated virtual columns
if (output)
return metadata_snapshot->getSampleBlock();
else
return metadata_snapshot->getSampleBlockWithVirtuals(storage->getVirtuals());
}
void PushingToViewsBlockOutputStream::write(const Block & block)
{
/** Throw an exception if the sizes of arrays - elements of nested data structures doesn't match.
* We have to make this assertion before writing to table, because storage engine may assume that they have equal sizes.
* NOTE It'd better to do this check in serialization of nested structures (in place when this assumption is required),
* but currently we don't have methods for serialization of nested structures "as a whole".
*/
Nested::validateArraySizes(block);
if (auto * live_view = dynamic_cast<StorageLiveView *>(storage.get()))
{
StorageLiveView::writeIntoLiveView(*live_view, block, getContext());
}
else if (auto * window_view = dynamic_cast<StorageWindowView *>(storage.get()))
{
StorageWindowView::writeIntoWindowView(*window_view, block, getContext());
}
else
{
if (output)
/// TODO: to support virtual and alias columns inside MVs, we should return here the inserted block extended
/// with additional columns directly from storage and pass it to MVs instead of raw block.
output->write(block);
}
/// Don't process materialized views if this block is duplicate
if (!getContext()->getSettingsRef().deduplicate_blocks_in_dependent_materialized_views && replicated_output && replicated_output->lastBlockIsDuplicate())
return;
// Insert data into materialized views only after successful insert into main table
const Settings & settings = getContext()->getSettingsRef();
if (settings.parallel_view_processing && views.size() > 1)
{
// Push to views concurrently if enabled and more than one view is attached
ThreadPool pool(std::min(size_t(settings.max_threads), views.size()));
for (auto & view : views)
{
auto thread_group = CurrentThread::getGroup();
pool.scheduleOrThrowOnError([=, &view, this]
{
setThreadName("PushingToViews");
if (thread_group)
CurrentThread::attachToIfDetached(thread_group);
process(block, view);
});
}
// Wait for concurrent view processing
pool.wait();
}
else
{
// Process sequentially
for (auto & view : views)
{
process(block, view);
if (view.exception)
std::rethrow_exception(view.exception);
}
}
}
void PushingToViewsBlockOutputStream::writePrefix()
{
if (output)
output->writePrefix();
for (auto & view : views)
{
try
{
view.out->writePrefix();
}
catch (Exception & ex)
{
ex.addMessage("while write prefix to view " + view.table_id.getNameForLogs());
throw;
}
}
}
void PushingToViewsBlockOutputStream::writeSuffix()
{
if (output)
output->writeSuffix();
std::exception_ptr first_exception;
const Settings & settings = getContext()->getSettingsRef();
bool parallel_processing = false;
/// Run writeSuffix() for views in separate thread pool.
/// In could have been done in PushingToViewsBlockOutputStream::process, however
/// it is not good if insert into main table fail but into view succeed.
if (settings.parallel_view_processing && views.size() > 1)
{
parallel_processing = true;
// Push to views concurrently if enabled and more than one view is attached
ThreadPool pool(std::min(size_t(settings.max_threads), views.size()));
auto thread_group = CurrentThread::getGroup();
for (auto & view : views)
{
if (view.exception)
continue;
pool.scheduleOrThrowOnError([thread_group, &view, this]
{
setThreadName("PushingToViews");
if (thread_group)
CurrentThread::attachToIfDetached(thread_group);
Stopwatch watch;
try
{
view.out->writeSuffix();
}
catch (...)
{
view.exception = std::current_exception();
}
view.elapsed_ms += watch.elapsedMilliseconds();
LOG_TRACE(log, "Pushing from {} to {} took {} ms.",
storage->getStorageID().getNameForLogs(),
view.table_id.getNameForLogs(),
view.elapsed_ms);
});
}
// Wait for concurrent view processing
pool.wait();
}
for (auto & view : views)
{
if (view.exception)
{
if (!first_exception)
first_exception = view.exception;
continue;
}
if (parallel_processing)
continue;
Stopwatch watch;
try
{
view.out->writeSuffix();
}
catch (Exception & ex)
{
ex.addMessage("while write prefix to view " + view.table_id.getNameForLogs());
throw;
}
view.elapsed_ms += watch.elapsedMilliseconds();
LOG_TRACE(log, "Pushing from {} to {} took {} ms.",
storage->getStorageID().getNameForLogs(),
view.table_id.getNameForLogs(),
view.elapsed_ms);
}
if (first_exception)
std::rethrow_exception(first_exception);
UInt64 milliseconds = main_watch.elapsedMilliseconds();
if (views.size() > 1)
{
LOG_DEBUG(log, "Pushing from {} to {} views took {} ms.",
storage->getStorageID().getNameForLogs(), views.size(),
milliseconds);
}
}
void PushingToViewsBlockOutputStream::flush()
{
if (output)
output->flush();
for (auto & view : views)
view.out->flush();
}
void PushingToViewsBlockOutputStream::process(const Block & block, ViewInfo & view)
{
Stopwatch watch;
try
{
BlockInputStreamPtr in;
/// We need keep InterpreterSelectQuery, until the processing will be finished, since:
///
/// - We copy Context inside InterpreterSelectQuery to support
/// modification of context (Settings) for subqueries
/// - InterpreterSelectQuery lives shorter than query pipeline.
/// It's used just to build the query pipeline and no longer needed
/// - ExpressionAnalyzer and then, Functions, that created in InterpreterSelectQuery,
/// **can** take a reference to Context from InterpreterSelectQuery
/// (the problem raises only when function uses context from the
/// execute*() method, like FunctionDictGet do)
/// - These objects live inside query pipeline (DataStreams) and the reference become dangling.
std::optional<InterpreterSelectQuery> select;
if (view.query)
{
/// We create a table with the same name as original table and the same alias columns,
/// but it will contain single block (that is INSERT-ed into main table).
/// InterpreterSelectQuery will do processing of alias columns.
auto local_context = Context::createCopy(select_context);
local_context->addViewSource(
StorageValues::create(storage->getStorageID(), metadata_snapshot->getColumns(), block, storage->getVirtuals()));
select.emplace(view.query, local_context, SelectQueryOptions());
in = std::make_shared<MaterializingBlockInputStream>(select->execute().getInputStream());
/// Squashing is needed here because the materialized view query can generate a lot of blocks
/// even when only one block is inserted into the parent table (e.g. if the query is a GROUP BY
/// and two-level aggregation is triggered).
in = std::make_shared<SquashingBlockInputStream>(
in, getContext()->getSettingsRef().min_insert_block_size_rows, getContext()->getSettingsRef().min_insert_block_size_bytes);
in = std::make_shared<ConvertingBlockInputStream>(in, view.out->getHeader(), ConvertingBlockInputStream::MatchColumnsMode::Name);
}
else
in = std::make_shared<OneBlockInputStream>(block);
in->readPrefix();
while (Block result_block = in->read())
{
Nested::validateArraySizes(result_block);
view.out->write(result_block);
}
in->readSuffix();
}
catch (Exception & ex)
{
ex.addMessage("while pushing to view " + view.table_id.getNameForLogs());
view.exception = std::current_exception();
}
catch (...)
{
view.exception = std::current_exception();
}
view.elapsed_ms += watch.elapsedMilliseconds();
}
}

10
src/DataTypes/NestedUtils.cpp
View File

@ -45,6 +45,15 @@ std::pair<std::string, std::string> splitName(const std::string & name)
return {name.substr(0, idx), name.substr(idx + 1)};
}
std::pair<std::string_view, std::string_view> splitName(const std::string_view & name)
{
auto idx = name.find_first_of('.');
if (idx == std::string::npos || idx == 0 || idx + 1 == name.size())
return {name, {}};
return {name.substr(0, idx), name.substr(idx + 1)};
}
std::string extractTableName(const std::string & nested_name)
{
@ -211,6 +220,7 @@ void validateArraySizes(const Block & block)
}
}
std::unordered_set<String> getAllTableNames(const Block & block)
{
std::unordered_set<String> nested_table_names;

1
src/DataTypes/NestedUtils.h
View File

@ -12,6 +12,7 @@ namespace Nested
std::string concatenateName(const std::string & nested_table_name, const std::string & nested_field_name);
std::pair<std::string, std::string> splitName(const std::string & name);
std::pair<std::string_view, std::string_view> splitName(const std::string_view & name);
/// Returns the prefix of the name to the first '.'. Or the name is unchanged if there is no dot.
std::string extractTableName(const std::string & nested_name);

1
src/Databases/DatabaseAtomic.cpp
View File

@ -43,6 +43,7 @@ DatabaseAtomic::DatabaseAtomic(String name_, String metadata_path_, UUID uuid, c
, db_uuid(uuid)
{
assert(db_uuid != UUIDHelpers::Nil);
fs::create_directories(fs::path(getContext()->getPath()) / "metadata");
fs::create_directories(path_to_table_symlinks);
tryCreateMetadataSymlink();
}

7
src/Databases/DatabaseFactory.cpp
View File

@ -117,6 +117,7 @@ DatabasePtr DatabaseFactory::getImpl(const ASTCreateQuery & create, const String
static const std::unordered_set<std::string_view> engines_with_arguments{"MySQL", "MaterializeMySQL", "MaterializedMySQL",
"Lazy", "Replicated", "PostgreSQL", "MaterializedPostgreSQL", "SQLite"};
static const std::unordered_set<std::string_view> engines_with_table_overrides{"MaterializeMySQL", "MaterializedMySQL"};
bool engine_may_have_arguments = engines_with_arguments.contains(engine_name);
if (engine_define->engine->arguments && !engine_may_have_arguments)
@ -131,6 +132,9 @@ DatabasePtr DatabaseFactory::getImpl(const ASTCreateQuery & create, const String
throw Exception(ErrorCodes::UNKNOWN_ELEMENT_IN_AST,
"Database engine `{}` cannot have parameters, primary_key, order_by, sample_by, settings", engine_name);
if (create.table_overrides && !engines_with_table_overrides.contains(engine_name))
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Database engine `{}` cannot have table overrides", engine_name);
if (engine_name == "Ordinary")
return std::make_shared<DatabaseOrdinary>(database_name, metadata_path, context);
else if (engine_name == "Atomic")
@ -200,7 +204,8 @@ DatabasePtr DatabaseFactory::getImpl(const ASTCreateQuery & create, const String
mysql_database_settings->loadFromQuery(*engine_define); /// higher priority
return std::make_shared<DatabaseMySQL>(
context, database_name, metadata_path, engine_define, configuration.database, std::move(mysql_database_settings), std::move(mysql_pool));
context, database_name, metadata_path, engine_define, configuration.database,
std::move(mysql_database_settings), std::move(mysql_pool), create.attach);
}
MySQLClient client(configuration.host, configuration.port, configuration.username, configuration.password);

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