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2022 Changelog
ClickHouse release v21.7.9.7-stable FIXME as compared to v21.7.8.58-stable
Improvement
- Backported in #27892: Allow symlinks for library dictionaty path. #27815 (Kseniia Sumarokova).
- Backported in #28155: Use Multipart copy upload for large S3 objects. #27858 (ianton-ru).
Bug Fix
- Backported in #27976: Bugfix for windowFunnel's "strict" mode. This fixes #27469. #27563 (achimbab).
- Backported in #27780: Fix column filtering with union distinct in subquery. Closes #27578. #27689 (Kseniia Sumarokova).
- Backported in #27866: Prevent crashes for some formats when NULL (tombstone) message was coming from Kafka. Closes #19255. #27794 (filimonov).
- Backported in #28347: Fix a rare bug in
DROP PART
which can lead to the errorUnexpected merged part intersects drop range
. #27807 (alesapin). - Backported in #27955: Fix selecting with extremes from a column of the type
LowCardinality(UUID)
. #27918 (Vitaly Baranov). - Backported in #27951: Check cluster name before creating Distributed table, do not allow to create a table with incorrect cluster name. Fixes #27832. #27927 (Alexander Tokmakov).
- Backported in #28208: Fix cases, when read buffer fails with 'attempt to read after end of file'. Closes #26149. #28150 (Filatenkov Artur).
Build/Testing/Packaging Improvement
- Backported in #28032: Temporarily switched ubuntu apt repository to mirror ru.archive.ubuntu.com as default one(archive.ubuntu.com) is not responding from our CI. #28016 (Ilya Yatsishin).
Bug Fix (user-visible misbehaviour in official stable release)
- Backported in #28116: Fix extremely rare segfaults on shutdown due to incorrect order of context/config reloader shutdown. #28088 (nvartolomei).
- Backported in #28183: Fixed possible excessive number of conditions moved from
WHERE
toPREWHERE
(optimization controlled by settingsoptimize_move_to_prewhere
). #28139 (lthaooo). - Backported in #28255: Fix incorrect behavior in
clickhouse-keeper
when list watches (getChildren
) triggered withset
requests for children. #28190 (alesapin). - Backported in #28265: Fix possible read of uninitialized memory for queries with
Nullable(LowCardinality)
type and extremes. Fixes #28165. #28205 (Nikolai Kochetov). - Backported in #28288: Fix reading of custom TLD w/o new line at EOF. #28213 (Azat Khuzhin).
- Backported in #28295: Fix inconsistent result in queries with
ORDER BY
andMerge
tables with enabled settingoptimize_read_in_order
. #28266 (Anton Popov).
NOT FOR CHANGELOG / INSIGNIFICANT
- Fix prometheus metric name #26140 (Vladimir C).
- Fix flaky test #27383 (Kseniia Sumarokova).
- Fix throw without exception in MySQL source. #28027 (Nikolai Kochetov).
- Fix race between REPLACE PARTITION and MOVE PARTITION #28035 (Alexander Tokmakov).
- Follow-up to #28016 #28036 (Alexander Tokmakov).
- Set version of tzlocal to 2.1 #28063 (Vitaly Baranov).
- ODBC connection holder fix dangling reference #28298 (Maksim Kita).
- Another try to fix BackgroundPoolTask decrement. #28353 (Nikolai Kochetov).
- More accurate check that zk root exists. #28412 (Nikolai Kochetov).