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2022 Changelog
ClickHouse release v21.1.9.41-stable FIXME as compared to v21.1.8.30-stable
Improvement
- Backported in #22817: Make FQDN and other DNS related functions work correctly in alpine images. #20336 (filimonov).
- Backported in #22810: If PODArray was instantiated with element size that is neither a fraction or a multiple of 16, buffer overflow was possible. No bugs in current releases exist. #21533 (Alexey Milovidov).
Bug Fix
- Backported in #22967: Fix very rare bug when quorum insert with
quorum_parallel=1
is not really "quorum" because of deduplication. #18215 (filimonov). - Backported in #22088: In case if query has constant
WHERE
condition, and settingoptimize_skip_unused_shards
enabled, all shards may be skipped and query could return incorrect empty result. #21550 (Amos Bird). - Backported in #21857: Fix possible error
Cannot find column
whenoptimize_skip_unused_shards
is enabled and zero shards are used. #21579 (Azat Khuzhin). - Backported in #22758: Fix usage of function
map
in distributed queries. #22588 (foolchi). - Backported in #22890: Fix approx total rows accounting for reverse reading from MergeTree. #22726 (Azat Khuzhin).
- Backported in #22919: Fixed a crash when using
mannWhitneyUTest
andrankCorr
with window functions. This fixes #22728. #22876 (Nikita Mikhaylov).
Build/Testing/Packaging Improvement
- Backported in #22813: Allow to start up with modified binary under gdb. In previous version if you set up breakpoint in gdb before start, server will refuse to start up due to failed integrity check. #21258 (Alexey Milovidov).
NOT FOR CHANGELOG / INSIGNIFICANT
- Check for EINTR in epoll_wait #20958 (Nikolai Kochetov).
- FileDictionarySource fix absolute file path #22822 (Maksim Kita).