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ClickHouse® is a real-time analytics DBMS
32,191 Commits 9,175 Branches 1,781 Tags 2.1 GiB
C++ 79.2%
Python 8.8%
Shell 4.4%
C 3.4%
Jinja 1.8%
Other 2.1%
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Alexander Kuzmenkov 51c1a120b8 Update lz4 to see if it fixes an msan failure. 
The failure goes like this:

https://clickhouse-test-reports.s3.yandex.net/7946/1f69a7a015468099b7395ce3b96fb638b9830e0b/functional_stateless_tests_(memory)/stderr.log

```
==199==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x2009fc34 in LZ4_count /build/obj-x86_64-linux-gnu/../contrib/lz4/lib/lz4.c:541:13
    #1 0x2009fc34 in LZ4_compress_generic /build/obj-x86_64-linux-gnu/../contrib/lz4/lib/lz4.c:999
    #2 0x2009fc34 in LZ4_compress_fast_extState /build/obj-x86_64-linux-gnu/../contrib/lz4/lib/lz4.c:1140
    #3 0x200ac663 in LZ4_compress_fast /build/obj-x86_64-linux-gnu/../contrib/lz4/lib/lz4.c:1211:14
    #4 0x200ac663 in LZ4_compress_default /build/obj-x86_64-linux-gnu/../contrib/lz4/lib/lz4.c:1222
    #5 0x1b76d2e8 in DB::CompressionCodecLZ4::doCompressData(char const*, unsigned int, char*) const /build/obj-x86_64-linux-gnu/../dbms/src/Compression/CompressionCodecLZ4.cpp:45:12
```
2019-12-12 20:55:27 +03:00
.github Clarify when the changelog entry is required 2019-11-12 15:49:01 +03:00
cmake Fixed linker searching logic. 2019-12-11 13:20:45 +03:00
contrib Update lz4 to see if it fixes an msan failure. 2019-12-12 20:55:27 +03:00
dbms Fix style 2019-12-11 13:24:20 +03:00
debian Update clickhouse-server.postinst 2019-12-07 21:47:59 +03:00
docker Add gdb to integration tests image 2019-12-10 13:13:22 +03:00
docs Fix markdown unsorted list 2019-12-11 16:12:32 +01:00
libs Merge pull request #8054 from amosbird/glibc2.30 2019-12-09 23:11:10 +03:00
utils Push packages to lts 2019-12-11 14:17:47 +03:00
website Introduction refactoring + a bunch of docs fixes (#8010) 2019-12-05 19:36:51 +03:00
.clang-format Fix style 2018-12-10 18:50:58 +03:00
.editorconfig Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.gitattributes Better stats on github [#METR-20000]. 2016-05-04 18:03:17 +03:00
.gitignore Add support for cross-compiling to the CPU architecture AARCH64 (#7370) 2019-10-30 10:01:53 +03:00
.gitlab-ci.yml fix ci 2018-02-06 13:13:44 +03:00
.gitmodules Update Poco to a new version. 2019-11-19 19:26:41 +03:00
.potato.yml Update comments in .potato.yml 2019-10-20 12:50:33 +08:00
.vimrc Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
AUTHORS CLICKHOUSE-2720: progress on website and reference (#886) 2017-06-20 17:19:03 +03:00
CHANGELOG.md Update CHANGELOG.md 2019-12-12 02:49:05 +03:00
CMakeLists.txt Merge pull request #8097 from amosbird/omitframepointer 2019-12-09 21:57:49 +03:00
CONTRIBUTING.md Grammatical mistake 2019-10-09 14:30:04 +05:30
docker-compose.yml Updated docker-compose.yml #1025 2017-07-26 20:05:32 +03:00
format_sources allow several <graphite> targets (#603) 2017-03-21 23:08:09 +04:00
LICENSE Duplicate copyright 2019-07-04 15:03:43 +03:00
PreLoad.cmake Disable ninja for CLion 2019-09-11 10:23:20 +03:00
README.md Remove link to past meetup 2019-12-04 12:03:50 +03:00
release Initial fuzzing support with libfuzzer 2019-09-22 13:34:09 +03:00
SECURITY.md Changed repository URL 2019-09-23 19:18:19 +03:00
uncrustify.cfg Better .clang-format and uncrustify.cfg 2018-11-29 15:45:34 +03:00

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 quick high-level overview of ClickHouse on main page.
  • Tutorial shows how to set up and query small ClickHouse cluster.
  • Documentation provides more in-depth information.
  • YouTube channel has a lot of content about ClickHouse in video format.
  • Blog contains various ClickHouse-related articles, as well as announces and reports about events.
  • Contacts can help to get your questions answered if there are any.
  • You can also fill this form to meet Yandex ClickHouse team in person.

Upcoming Events