Commit Graph

329 Commits

Author SHA1 Message Date
Anton Ivashkin
80ab73c691 Fix Zero-Copy replication lost locks, fix remove used remote data in DROP DETACHED PART 2021-12-01 16:11:26 +03:00
Anton Ivashkin
0f9038ebed Zero-copy: move shared mark outside table node in ZooKeeper 2021-11-29 19:05:31 +03:00
Anton Popov
a20922b2d3 Merge remote-tracking branch 'origin/sparse-serialization' into HEAD 2021-11-09 15:36:25 +03:00
alesapin
2af950d4d5
Merge pull request #30658 from ClickHouse/std_mutex_alter_lock
Change `alter_lock` from `RWLock` to `std::timed_mutex`
2021-10-27 11:14:11 +03:00
mergify[bot]
ce88a84e88
Merge branch 'master' into nv/parts-uuid-move-shard-kill 2021-10-26 11:09:19 +00:00
Alexander Tokmakov
2e7e195e77 change alter_lock to std::timed_mutex 2021-10-26 13:37:00 +03:00
Nikolai Kochetov
a08c98d760 Move some files. 2021-10-16 17:03:50 +03:00
mergify[bot]
3b1f49aac7
Merge branch 'master' into nv/parts-uuid-move-shard-kill 2021-10-05 12:36:02 +00:00
Alexey Milovidov
fe6b7c77c7 Rename "common" to "base" 2021-10-02 10:13:14 +03:00
Nicolae Vartolomei
9a02061d9c
Rewrite part movement between shards logic and add kill support
See https://github.com/ClickHouse/ClickHouse/pull/24585#issuecomment-857735081
for extra context about the current implementation.
2021-09-17 18:11:32 +01:00
Nikita Mikhaylov
c52b8ec083
Introduced MergeTask and MutateTask (#25165)
Introduced MergeTask and MutateTask
2021-09-17 00:19:58 +03:00
Anton Popov
4c388e3d84 Merge remote-tracking branch 'origin/sparse-serialization' into HEAD 2021-09-09 14:10:16 +03:00
Nikita Mikhaylov
6062dd0021 Better 2021-09-08 00:21:21 +00:00
Nikita Mikhaylov
ea0fbf81af Renaming 2021-09-06 12:01:16 +00:00
Nikita Mikhaylov
292a24abe8 Merge upstream/master into global-merge-executor (using imerge) 2021-09-03 00:34:24 +00:00
Nikita Mikhaylov
cc7c221fad Own PriorityQueue + prettifying the code 2021-09-02 21:31:32 +00:00
mergify[bot]
5d299fbdee
Merge branch 'master' into remove_outdated_settings 2021-09-01 14:07:48 +00:00
Nikita Mikhaylov
dbc950caa4 added a test 2021-08-31 14:54:24 +00:00
alesapin
7223a32aac Followup 2021-08-31 15:29:33 +03:00
alesapin
921e51e061 Remove some obsolete settings for replicated fetches 2021-08-31 15:22:56 +03:00
Nikita Mikhaylov
f8d4f04294 Merge upstream/master into global-merge-executor (using imerge) 2021-08-31 11:52:11 +00:00
Nikita Mikhaylov
c4416906c8 done 2021-08-30 19:37:03 +00:00
Alexey Milovidov
79e0433ba7 Merge branch 'master' of github.com:yandex/ClickHouse into async-reads 2021-08-28 01:19:16 +03:00
tavplubix
703101fe4d
Merge pull request #27931 from ClickHouse/wait_for_all_replicas_timeouts
Avoid too long waiting for inactive replicas
2021-08-27 14:31:36 +03:00
Alexey Milovidov
7c1d0a3baf Progress on development 2021-08-25 01:24:47 +03:00
Alexander Tokmakov
cc9c2fd63b make code better 2021-08-23 15:57:50 +03:00
Anton Popov
61239343e3 Merge remote-tracking branch 'origin/sparse-serialization' into HEAD 2021-08-20 16:33:30 +03:00
Alexander Tokmakov
59eb3aa9a9 avoid too long waiting for inactive replicas 2021-08-20 15:59:57 +03:00
mergify[bot]
f11e396151
Merge branch 'master' into nv/last-queue-update-exception 2021-08-18 07:00:50 +00:00
Nicolae Vartolomei
3f291b024a
Use plain mutex instead of MultiVersion 2021-08-09 13:58:23 +01:00
Maksim Kita
3f48c85722 StorageSystemReplicas added column replica_is_active 2021-08-04 16:19:42 +03:00
Anton Popov
e36736b50c Merge remote-tracking branch 'origin/sparse-serialization' into HEAD 2021-08-02 22:52:02 +03:00
Nicolae Vartolomei
8b07a7f180 Store exception generated when we tried to update the queue last time
The use case is to alert when queue contains broken entries. Especially
important when ClickHouse breaks backwards compatibility between
versions and log entries written by newer versions aren't parseable by
old versions.

```
Code: 27, e.displayText() = DB::Exception: Cannot parse input: expected 'quorum: ' before: 'merge_type: 2\n'
```
2021-07-27 15:42:40 +01:00
Nikolai Kochetov
9c92f43359 Update storages. 2021-07-23 22:33:59 +03:00
Anton Popov
f99374cca6 Merge remote-tracking branch 'origin/sparse-serialization' into HEAD 2021-07-20 18:20:21 +03:00
Zhichang Yu
5047c758f4 fix per review 2021-07-13 07:20:20 +00:00
Zhichang Yu
fbd5eee8a1 hdfs zero copy 2021-07-13 07:19:12 +00:00
Anton Popov
3ed7f5a6cc dynamic subcolumns: add snapshot for storage 2021-07-09 06:15:41 +03:00
alesapin
0d8844c510
Merge pull request #25884 from ClickHouse/fix_drop_part_in_queue
Relax `DROP PART` guarantees and turn on checks in ReplicationQueue.
2021-07-07 10:48:48 +03:00
Anton Popov
9071ecd428 fix alter of settings in MergeTree 2021-07-05 15:44:58 +03:00
alesapin
89a401a84f Merge branch 'better_remove_empty_parts' into fix_drop_part_in_queue 2021-06-30 18:53:17 +03:00
alesapin
6a73c8b49e Review fixes 2021-06-30 18:24:51 +03:00
alesapin
21f15be990 Merge branch 'better_remove_empty_parts' into fix_drop_part_in_queue 2021-06-30 15:30:32 +03:00
alesapin
2eb27540b2 Some test version 2021-06-30 15:29:09 +03:00
alesapin
5822f0ba29 Replace lost parts with empty parts instead of hacking replication queue 2021-06-29 18:14:44 +03:00
Raúl Marín
bfc122df64 Fix some typos in Storage classes 2021-06-28 19:03:56 +02:00
Nikita Mikhaylov
c66a3b22b5 done 2021-06-22 23:24:47 +00:00
Mike Kot
4c391f8e99
SYSTEM RESTORE REPLICA replica [ON CLUSTER cluster] (#13652)
* initial commit: add setting and stub

* typo

* added test stub

* fix

* wip merging new integration test and code proto

* adding steps interpreters

* adding firstly proposed solution (moving parts etc)

* added checking zookeeper path existence

* fixing the include

* fixing and sorting includes

* fixing outdated struct

* fix the name

* added ast ptr as level of indirection

* fix ref

* updating the changes

* working on test stub

* fix iterator -> reference

* revert rocksdb submodule update

* fixed show privileges test

* updated the test stub

* replaced rand() with thread_local_rng(), updated the tests

updated the test

fixed test config path

test fix

removed error messages

fixed the test

updated the test

fixed string literal

fixed literal

typo: =

* fixed the empty replica error message

* updated the test and the code with logs

* updated the possible test cases, updated

* added the code/test milestone comments

* updated the test (added more testcases)

* replaced native assert with CH one

* individual replicas recursive delete fix

* updated the AS db.name AST

* two small logging fixes

* manually generated AST fixes

* Updated the test, added the possible algo change

* Some thoughts about optimizing the solution:

ALTER MOVE PARTITION .. TO TABLE -> move to detached/ + ALTER ... ATTACH

* fix

* Removed the replica sync in test as it's invalid

* Some test tweaks

* tmp

* Rewrote the algo by using the executeQuery instead of

hand-crafting the ASTPtr.

Two questions still active.

* tr: logging active parts

* Extracted the parts moving algo into a separate helper function

* Fixed the test data and the queries slightly

* Replaced query to system.parts to direct invocation,

started building the test that breaks on various parts.

* Added the case for tables when at least one replica is alive

* Updated the test to test replicas restoration by detaching/attaching

* Altered the test to check restoration without replica restart

* Added the tables swap in the start if the server failed last time

* Hotfix when only /replicas/replica... path was deleted

* Restore ZK paths while creating a replicated MergeTree table

* Updated the docs, fixed the algo for individual replicas restoration case

* Initial parts table storage fix, tests sync fix

* Reverted individual replica restoration to general algo

* Slightly optimised getDataParts

* Trying another solution with parts detaching

* Rewrote algo without any steps, added ON CLUSTER support

* Attaching parts from other replica on restoration

* Getting part checksums from ZK

* Removed ON CLUSTER, finished working solution

* Multiple small changes after review

* Fixing parallel test

* Supporting rewritten form on cluster

* Test fix

* Moar logging

* Using source replica as checksum provider

* improve test, remove some code from parser

* Trying solution with move to detached + forget

* Moving all parts (not only Committed) to detached

* Edited docs for RESTORE REPLICA

* Re-merging

* minor fixes

Co-authored-by: Alexander Tokmakov <avtokmakov@yandex-team.ru>
2021-06-20 11:24:43 +03:00
Maksim Kita
67e9b85951 Merge ext into common 2021-06-16 23:28:41 +03:00
Alexander Tokmakov
3ade38df82 remove copypaste 2021-06-08 22:17:45 +03:00
alesapin
4a1bf51ad1
Merge branch 'master' into limited_fetches 2021-06-02 23:01:47 +03:00
alexey-milovidov
c7bd3b8674
Merge pull request #23315 from CurtizJ/empty-parts-fix
Fix waiting while dropping empty parts
2021-06-01 13:52:49 +03:00
Nikolai Kochetov
afc1fe7f3d Make ContextPtr const by default. 2021-05-31 17:49:02 +03:00
Anton Popov
179f172c4c fix build 2021-05-28 02:10:44 +03:00
Anton Popov
336abfa475 Merge remote-tracking branch 'upstream/master' into HEAD 2021-05-28 01:58:30 +03:00
alesapin
2985def91d Add tests 2021-05-27 15:54:47 +03:00
alesapin
42b2383e01 Basic throttler implementation 2021-05-26 23:37:44 +03:00
Anton Popov
7d1431f6b6 better code near dropPartition 2021-05-25 20:25:00 +03:00
alesapin
20a34e951a Split fetch part into two stages, don't use replicated block output stream 2021-05-21 12:30:49 +03:00
Anton Popov
e27acc26be better dropPart and dropPartition 2021-05-17 17:26:36 +03:00
Anton Popov
e043cc45bf Merge remote-tracking branch 'upstream/master' into HEAD 2021-05-17 16:11:12 +03:00
alesapin
17f229857c Merge branch 'master' into nvartolomei-parts-move 2021-05-17 13:52:48 +03:00
Alexander Tokmakov
970ad94851 Merge branch 'master' into fix_intersecting_parts 2021-05-14 13:17:02 +03:00
Alexander Tokmakov
2da12f0b59 fix intersection of drop range and merge 2021-05-13 17:04:36 +03:00
Alexander Tokmakov
e114c7eb8b fix virtual parts in REPLACE_RANGE 2021-05-13 14:29:59 +03:00
alesapin
46e136b5c4
Merge branch 'master' into nv/parts-uuid-move-shard 2021-05-11 15:36:40 +03:00
Alexander Tokmakov
11124f7015 fix 2021-05-07 20:09:39 +03:00
Nicolae Vartolomei
1fa5871ff7 Fix bad rebase and introduce part_moves_between_shards_enable setting 2021-04-27 14:20:13 +01:00
Nicolae Vartolomei
53d57ffb52 Part movement between shards
Integrate query deduplication from #17348
2021-04-27 14:20:12 +01:00
mergify[bot]
b9e229d19d
Merge branch 'master' into empty-parts-fix 2021-04-21 13:19:54 +00:00
Anton Popov
42a0416a2b better drop of empty parts 2021-04-20 05:31:08 +03:00
Alexander Tokmakov
ecc625692e fix build 2021-04-19 13:40:20 +03:00
Alexander Tokmakov
9bc98771f7 fix race on replica creation 2021-04-19 11:21:42 +03:00
songenjie
f731739fab fix suggests 2021-04-14 10:05:41 +08:00
songenjie
7c32cc1e18 fix case style for local variable 2021-04-13 17:34:04 +08:00
songenjie
564136ec46 [clickhouse][server][dll][alter]support fetch part 2021-04-13 12:40:33 +08:00
Azat Khuzhin
dfe3699e77 Respect max_part_removal_threads for ReplicatedMergeTree 2021-04-11 11:33:45 +03:00
Ivan
495c6e03aa
Replace all Context references with std::weak_ptr (#22297)
* Replace all Context references with std::weak_ptr

* Fix shared context captured by value

* Fix build

* Fix Context with named sessions

* Fix copy context

* Fix gcc build

* Merge with master and fix build

* Fix gcc-9 build
2021-04-11 02:33:54 +03:00
Mike Kot
c947280dfc Merge remote-tracking branch 'upstream/master' into feature/attach-partition-local 2021-04-01 21:38:51 +03:00
alexey-milovidov
1512ff832e
Merge branch 'master' into nv/replicated-fetches-timeouts 2021-03-29 19:25:13 +03:00
Mike Kot
406d037ebb Merge remote-tracking branch 'upstream/master' into feature/attach-partition-local 2021-03-15 18:41:47 +03:00
Anton Ivashkin
aff13c0c52 Make method StorageReplicatedMergeTree::fetchExistsPart 2021-03-09 20:49:50 +03:00
alesapin
5b3161e0b5 Get rid of const_cast 2021-03-05 20:24:06 +03:00
Anton Ivashkin
d08b481660 Fixes by review responces 2021-03-05 19:20:38 +03:00
Nicolae Vartolomei
1d83c596f8 RFC: Throw exception if removing parts from ZooKeeper fails.
This is used for removing part metadata from ZooKeeper when executing
queue events like `DROP_RANGE` triggered when a user tries to drop a
part or a partition. There are other uses but I'll focus only on this
one.

Before this change the method was giving up silently if it was unable to
remove parts from ZooKeeper and this behaviour seems to be problematic.
It could lead to operation being reported as successful at first but
data reappearing later (very rarely) or "stuck" events in replication
queue.

Here is one particular scenario which I think we've hit:

* Execute a DETACH PARTITION
* DROP_RANGE event put in the queue
* Replicas try to execute dropRange but some of them get disconnected
  from ZK and 5 retries aren't enough (ZK is miss-behaving), return code
  (false) is ignored and log pointer advances.
* One of the replica where dropRange failed is restarted.
* checkParts is executed and it finds parts that weren't removed from
  ZK, logs `Removing locally missing part from ZooKeeper and queueing a
  fetch` and puts GET_PART on the queue.
* Few things can happen from here:
  * There is a lagging replica that din't execute DROP_RANGE yet: part will be
    fetched. The other replica will execute DROP_RANGE later and we'll
    get diverging set of parts on replicas.
  * Another replica also silently failed to remove parts from ZK: both
    of them are left with GET_PART in the queue and none of them can
    make progress, logging: `No active replica has part ... or covering
    part`.
2021-03-05 09:50:26 +00:00
Mike Kot
4e1ac185b5 Merge remote-tracking branch 'upstream/master' into feature/attach-partition-local 2021-03-01 20:58:07 +03:00
Anton Ivashkin
3c11d44494 Add description for getUniqueId method, fix typos 2021-03-01 13:31:36 +03:00
Anton Ivashkin
5b267b7eec Merge branch 'master' of https://github.com/ClickHouse/ClickHouse into s3_zero_copy_replication 2021-02-26 13:15:18 +03:00
Anton Ivashkin
c891cf4557 Fixes by review response 2021-02-26 12:48:57 +03:00
Mike Kot
2b3b335eda Exit fixes 2021-02-25 21:41:09 +03:00
Mike Kot
b2c898f58c Adding the part when found 2021-02-25 21:25:55 +03:00
Mike Kot
ca83775711 Multiple small hotfixes
Small fixes

Some fix for old bug

Another old code fix
2021-02-16 16:39:18 +03:00
Mike Kot
73f4740be5 Trying to re-write the solution by adding new command type
ATTACH_PART into the replicated log.

The LogEntry now also has the pre-calculated part checksum for this
entry type, which is later used while searching in the detached/ folder
2021-02-15 18:06:48 +03:00
Mike Kot
cd32803709 Merge remote-tracking branch 'upstream/master' into feature/attach-partition-local 2021-02-15 15:42:17 +03:00
Nicolae Vartolomei
b153e8c190 Add support for custom fetchPart timeouts 2021-02-08 19:44:02 +00:00
Alexander Tokmakov
78c1d69b8c better code 2021-02-08 22:36:17 +03:00
Anton Ivashkin
e64c63c611 Merge master 2021-02-05 20:10:06 +03:00
alesapin
01c8b9e1b1 Fix rare bug when some replicated operations (like mutation) cannot process some parts after data corruption 2021-01-27 13:07:18 +03:00
Anton Ivashkin
357d98eb36 Merge master 2021-01-20 12:23:03 +03:00
Anton Ivashkin
eba98b04b0 Zero copy replication over S3: Hybrid storage support 2021-01-18 19:16:45 +03:00
Mike Kot
6b949109f1 marked places to edit 2021-01-12 21:46:03 +03:00
Alexey Milovidov
9be5fa9ef2 Merge branch 'master' into Enmk-Optimize_deduplicate 2020-12-20 09:57:10 +03:00
Alexey Milovidov
ca9ccf4850 Comment update 2020-12-16 06:03:43 +03:00
Vasily Nemkov
70ea507dae OPTIMIZE DEDUPLICATE BY columns
Extended OPTIMIZE ... DEDUPLICATE syntax to allow explicit (or implicit with asterisk/column transformers) list of columns to check for duplicates on.

Following syntax variants are now supported:

OPTIMIZE TABLE table DEDUPLICATE; -- the old one
OPTIMIZE TABLE table DEDUPLICATE BY *;
OPTIMIZE TABLE table DEDUPLICATE BY * EXCEPT colX;
OPTIMIZE TABLE table DEDUPLICATE BY * EXCEPT (colX, colY);
OPTIMIZE TABLE table DEDUPLICATE BY col1,col2,col3;
OPTIMIZE TABLE table DEDUPLICATE BY COLUMNS('column-matched-by-regex');
OPTIMIZE TABLE table DEDUPLICATE BY COLUMNS('column-matched-by-regex') EXCEPT colX;
OPTIMIZE TABLE table DEDUPLICATE BY COLUMNS('column-matched-by-regex') EXCEPT (colX, colY);

Note that * behaves just like in SELECT: MATERIALIZED, and ALIAS columns are not used for expansion.
Also, it is an error to specify empty list of columns, or write an expression that results in an empty list of columns, or deduplicate by an ALIAS column.
Column transformers other than EXCEPT are not supported.
2020-12-07 09:44:07 +03:00
Nicolae Vartolomei
796aee032d Update StorageReplicatedMergeTree::waitForAllReplicasToProcessLogEntry to support waiting on foreign shards / tables
This is not used anywhere yet but needed for an upcoming PR for part movement between shards.
2020-12-04 13:01:12 +00:00
alexey-milovidov
f4a61ac3c3
Merge pull request #17527 from ucasFL/spelling
fix spelling errors
2020-11-29 13:45:42 +03:00
feng lv
7e3524caa1 fix spelling errors 2020-11-28 08:17:20 +00:00
alexey-milovidov
dfae1efbbd
Merge pull request #17070 from fastio/master
Support multiple ZooKeeper clusters
2020-11-27 10:38:01 +03:00
nikitamikhaylov
72c7cd6693 replace Context& to Settings& 2020-11-25 16:47:32 +03:00
nikitamikhaylov
68bef22fda Merge branch 'master' of github.com:ClickHouse/ClickHouse into merging-sequential-consistency 2020-11-23 16:28:35 +03:00
Nicolae Vartolomei
94293ca3ce Assign UUIDs to parts only when configured to do so
Avoid breaking backwards compatibility by default for now.
2020-11-20 13:49:17 +00:00
Peng Jian
3c86c8b3c9 fix test cases 2020-11-19 15:44:47 +08:00
Peng Jian
091f7065cd fix build 2020-11-19 15:44:47 +08:00
Peng Jian
2df0c3e0b0 Add helper function for extracting zookeeper name and path. 2020-11-19 15:44:47 +08:00
Peng Jian
a0683ce460 Support mulitple ZooKeeper clusters 2020-11-19 15:44:47 +08:00
Mikhail Filimonov
97fef77ed1
execute_merges_on_single_replica 2020-11-18 08:45:33 +01:00
alesapin
8d3858fc22
Merge pull request #16895 from CurtizJ/remove-empty-parts
Remove empty parts after they were pruned by TTL [2]
2020-11-13 10:00:18 +03:00
alesapin
bbd85c3b2d
Merge pull request #16390 from ClickHouse/add_separate_pool_for_fetches
Add separate pool for fetches
2020-11-12 22:42:28 +03:00
Anton Popov
4cecd89e84 fix dropping of empty parts 2020-11-12 20:37:54 +03:00
alesapin
2cac5e5d97
Merge pull request #16875 from CurtizJ/refactor-alter-partition
Avoid code duplication in alterPartition
2020-11-12 13:19:59 +03:00
alesapin
a8d466a645 Merge branch 'master' into add_separate_pool_for_fetches 2020-11-12 12:51:02 +03:00
Anton Popov
6f0dc08ba7 avoid code duplication in alterPartition 2020-11-11 16:34:07 +03:00
Nikolai Kochetov
195c941c4e Merge branch 'master' into storage-read-query-plan 2020-11-10 15:02:22 +03:00
alesapin
2e357516a6 Merge branch 'master' into add_separate_pool_for_fetches 2020-11-10 13:53:08 +03:00
Vladimir Chebotarev
059357d51e
ALTER UPDATE/DELETE ... IN PARTITION with partition pruning in ReplicatedMergeTree (#13403)
Co-authored-by: Alexander Kazakov <Akazz@users.noreply.github.com>
2020-11-10 13:23:46 +03:00
alesapin
e347f4b72f Add some comments 2020-11-09 12:14:20 +03:00
alesapin
72046313d4 Merge branch 'master' into nvartolomei-drop-part 2020-11-09 10:02:02 +03:00
alesapin
4e846d2197 Merge branch 'master' into add_separate_pool_for_fetches 2020-11-09 10:00:21 +03:00
Alexey Milovidov
5314185e25 Merge branch 'master' into azat-optimize_skip_unused_shards-optimization 2020-11-08 00:17:59 +03:00
Nikolai Kochetov
c10f733587 Merge branch 'master' into storage-read-query-plan 2020-11-06 15:43:46 +03:00
alesapin
da8ac948bf Disallow to drop parts with parallel quorum 2020-11-03 12:24:10 +03:00
alesapin
dac6705995 DROP PART and clear blocks in a single zookeeper op 2020-11-02 20:30:59 +03:00
alesapin
67d22b3e57 Merge branch 'master' into nvartolomei-drop-part 2020-11-02 19:09:09 +03:00
alesapin
47ebc9f74e Add separate pool for fetches 2020-10-26 14:02:47 +03:00
hchen9
feaab260d8 Fix conflict 2020-10-23 12:54:33 -07:00
alesapin
39e47c5338 Less strange lambdas 2020-10-23 11:54:00 +03:00
alesapin
7a63b373f9 Merge branch 'blind_fix_of_read_in_order' into no_background_pool_no_more 2020-10-22 15:47:11 +03:00
Nikolai Kochetov
7fa045cff8 Merge branch 'master' into storage-read-query-plan 2020-10-22 13:31:10 +03:00
alexey-milovidov
adeba6bdd8
Merge pull request #15074 from amosbird/btc
Extend trivial count optimization.
2020-10-22 02:50:57 +03:00
alesapin
7edbe4d276 Add some comments 2020-10-16 13:12:31 +03:00
alesapin
4c1f5cab13 Sleep less in background task 2020-10-15 19:10:22 +03:00
alesapin
483893cdd4 Slightly refactored code 2020-10-14 17:56:42 +03:00
alesapin
0b14a31ba9 Get rid of background processing pool 2020-10-14 15:44:10 +03:00
alesapin
4014e0f08d Something very similar to working code 2020-10-14 15:32:35 +03:00
alesapin
efd3126b5d Moving pool 2020-10-14 10:22:48 +03:00
alesapin
fd35368c59 First simple implementation 2020-10-13 17:25:42 +03:00
alesapin
cb7db6d232 Split select and process merges
(cherry picked from commit 1889eb0ff1)
2020-10-13 15:04:16 +03:00
Nikolai Kochetov
7e58f99f64 Merge branch 'master' into storage-read-query-plan 2020-10-12 13:12:39 +03:00
alexey-milovidov
0fd007ad9e
Merge pull request #15601 from alexelex/alexelex-master
Improvement of Quorum Inserts in ClickHouse
2020-10-09 22:43:53 +03:00
Amos Bird
867216103f
Extend trivial count optimization. 2020-10-08 18:08:17 +08:00