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ClickHouse® is a real-time analytics DBMS
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Azat Khuzhin a34f42ca22 Remove lock from the ReadProgressCallback 
It looks redundant (added in 5ef51ed), though it has "fix tests" in the
log message, but CI reports is not available for the commits from that
PR [1], so let's try.

  [1]: https://github.com/ClickHouse/ClickHouse/pull/37543

Also this can be a big problem, since the code under that lock
(throttling or quotas with previous implementation that uses
boost::atomic_shared_ptr) may sleep.

Some numbers:

    run                     | time
    ------------------------|------
    max_threads=100 before  | 23.1
    max_threads=100 after   | 15.1
    max_threads=4500 before | 4.5
    max_threads=4500 after  | 2.3

Query:

    select sum(number) from numbers_mt(2000000) settings max_threads=X, max_block_size = 1

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2024-02-22 18:00:55 +01:00
.github CI: use aarch style checker for CI config job 2024-02-21 16:59:41 +00:00
base
benchmark
cmake
contrib Update NuRaft to master 2024-02-20 10:19:36 +01:00
docker Merge pull request #59460 from ClickHouse/keeper-logs-cache 2024-02-22 09:03:41 +01:00
docs Merge remote-tracking branch 'rschu1ze/master' into vector-dot-product 2024-02-22 10:16:28 +00:00
packages
programs Fix default path when path is not specified in config (#59654) 2024-02-21 20:33:39 +01:00
rust
src Remove lock from the ReadProgressCallback 2024-02-22 18:00:55 +01:00
tests Remove lock from the ReadProgressCallback 2024-02-22 18:00:55 +01:00
utils Revert "Check stack size in Parser" 2024-02-21 11:33:08 +01:00
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README.md

Website Apache 2.0 License

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

How To Install (Linux, macOS, FreeBSD)

curl https://clickhouse.com/ | sh

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