thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-12-03 13:02:00 +00:00
Code Issues Packages Projects Releases Wiki Activity
ClickHouse® is a real-time analytics DBMS
105,590 Commits 9,183 Branches 1,782 Tags 2.2 GiB
C++ 79.2%
Python 8.8%
Shell 4.4%
C 3.4%
Jinja 1.8%
Other 2.1%
4366f7fb3b
Go to file
Azat Khuzhin 4366f7fb3b Remove PREALLOCATE for HASHED/SPARSE_HASHED dictionaries 
It does not give significant benefit, but now, you hashed/sparse_hashed
dictionaries can be filled in parallel (#40003), using sharded
dictionaries, and this should be used instead of PREALLOCATE.

Note, that dictionaries, that had been created with PREALLOCATE will
work, but simply ignore this attribute.

Fixes: #41985 (cc @alexey-milovidov)
Reverts: #23979 (cc @kitaisreal)

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2023-01-18 20:18:37 +01:00
.github Merge pull request #41110 from ClickHouse/automerge 2023-01-13 23:16:35 +03:00
base fix TSA support 2023-01-10 01:19:42 +00:00
benchmark Remove old file 2022-07-12 20:28:02 +02:00
cmake Merge pull request #44828 from ClickHouse/remove-two-lines-of-code 2023-01-04 04:50:52 +03:00
contrib Merge branch 'master' into text_log_add_pattern 2023-01-13 20:33:46 +01:00
docker Merge pull request #44543 from ClickHouse/text_log_add_pattern 2023-01-17 20:19:32 +03:00
docs Remove PREALLOCATE for HASHED/SPARSE_HASHED dictionaries 2023-01-18 20:18:37 +01:00
packages Remove adduser dependency 2023-01-07 01:45:54 +01:00
programs Updated recording of startup time till after starting last listener and added stopping the StopWatch - Record server startup time in ProfileEvents 2023-01-16 08:32:25 +01:00
rust What happens if I remove these 139 lines of code? 2023-01-03 18:35:31 +00:00
src Remove PREALLOCATE for HASHED/SPARSE_HASHED dictionaries 2023-01-18 20:18:37 +01:00
tests Remove PREALLOCATE for HASHED/SPARSE_HASHED dictionaries 2023-01-18 20:18:37 +01:00
utils WSL1 inconsistency 2023-01-16 18:32:41 +00:00
.clang-format add BeforeLambdaBody to .clang-format 2022-02-11 16:51:45 +01:00
.clang-tidy Temporarily disable misc-* due to being too slow 2022-12-07 11:43:47 +00:00
.editorconfig
.exrc Fix vim settings (wrong group for autocmd) 2022-12-03 21:23:24 +01:00
.git-blame-ignore-revs Add files with revision to ignore for git blame 2022-09-13 23:05:56 +02:00
.gitattributes Ignore core.autocrlf for tests references 2022-10-05 09:13:27 +02:00
.gitignore Integrate skim into the client/local 2022-12-14 20:57:41 +01:00
.gitmodules Changes to support the CRC32 in PowerPC to address the WeakHash collision issue. Update the reference to support the hash values based on the specific platform 2023-01-10 21:20:13 -08:00
.pylintrc Cover deprecated bad-* pylint options with black 2022-06-08 14:18:28 +02:00
.snyk Add exclusions from the Snyk scan 2022-10-31 17:47:02 +01:00
.yamllint Drop truthy.check-keys from yamllint (does not supported on CI) 2021-02-21 06:15:36 +03:00
AUTHORS Update AUTHORS 2021-09-22 11:38:03 +03:00
CHANGELOG.md Update CHANGELOG.md 2022-12-20 20:56:40 +03:00
CMakeLists.txt What happens if I remove 156 lines of code? 2023-01-03 18:51:16 +00:00
CODE_OF_CONDUCT.md
CONTRIBUTING.md Mention ClickHouse CLA in CONTRIBUTING.md (#32697) 2021-12-14 03:47:19 +03:00
format_sources
LICENSE Update LICENSE 2023-01-02 00:35:32 +01:00
PreLoad.cmake Update PreLoad.cmake 2022-08-26 18:30:05 +08:00
README.md Update README.md 2022-12-21 02:16:35 +03:00
SECURITY.md Update version_date.tsv and changelogs after v22.12.1.1752-stable 2022-12-15 17:07:16 +00:00

README.md

ClickHouse — open source distributed column-oriented DBMS

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time.

Useful Links

  • Official website has a quick high-level overview of ClickHouse on the main page.
  • ClickHouse Cloud ClickHouse as a service, built by the creators and maintainers.
  • Tutorial shows how to set up and query a small ClickHouse cluster.
  • Documentation provides more in-depth information.
  • YouTube channel has a lot of content about ClickHouse in video format.
  • Slack and Telegram allow chatting with ClickHouse users in real-time.
  • Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
  • Code Browser (Woboq) with syntax highlight and navigation.
  • Code Browser (github.dev) with syntax highlight, powered by github.dev.
  • Contacts can help to get your questions answered if there are any.

Upcoming events

  • Recording available: v22.12 Release Webinar 22.12 is the ClickHouse Christmas release. There are plenty of gifts (a new JOIN algorithm among them) and we adopted something from MongoDB. Original creator, co-founder, and CTO of ClickHouse Alexey Milovidov will walk us through the highlights of the release.
  • ClickHouse Meetup at the CHEQ office in Tel Aviv - Jan 16 - We are very excited to be holding our next in-person ClickHouse meetup at the CHEQ office in Tel Aviv! Hear from CHEQ, ServiceNow and Contentsquare, as well as a deep dive presentation from ClickHouse CTO Alexey Milovidov. Join us for a fun evening of talks, food and discussion!
  • ClickHouse Meetup at Microsoft Office in Seattle - Jan 18 - Keep an eye on this space as we will be announcing speakers soon!