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2022 Changelog
ClickHouse release v21.3.18.4-lts FIXME as compared to v21.3.17.2-lts
Improvement
- Backported in #30355: Use separate
clickhouse-bridge
group and user for bridge processes. Set oom_score_adj so the bridges will be first subjects for OOM killer. Set set maximum RSS to 1 GiB. Closes #23861. #25280 (Kseniia Sumarokova). - Backported in #29945: Update zoneinfo files to 2021c. #29925 (Alexey Milovidov).
Bug Fix
- Backported in #30041: Fix shutdown of
AccessControlManager
. Now there can't be reloading of the configuration after AccessControlManager has been destroyed. This PR fixes the flaky test test_user_directories/test.py::test_relative_path. #29951 (Vitaly Baranov).
Bug Fix (user-visible misbehaviour in official stable release)
- Backported in #29260: Fix invalid constant type conversion when nullable or lowcardinality primary key is used. #28636 (Amos Bird).
- Backported in #29026: Fix the number of threads used in
GLOBAL IN
subquery (it was executed in single threads since #19414 bugfix). #28997 (Nikolai Kochetov). - Backported in #29194: Fix segfault while inserting into column with type LowCardinality(Nullable) in Avro input format. #29132 (Kruglov Pavel).
- Backported in #29360: Fix possible
Table columns structure in ZooKeeper is different from local table structure
exception while recreating or creating new replicas ofReplicatedMergeTree
, when one of table columns have default expressions with case-insensitive functions. #29266 (Anton Popov). - Backported in #29300: Fix connection timeouts (
send_timeout
/receive_timeout
). #29282 (Azat Khuzhin). - Backported in #30042: Condition in filter predicate could be lost after push-down optimisation. #29625 (Nikolai Kochetov).
- Backported in #29848: Fix concurrent access to
LowCardinality
duringGROUP BY
(leads to SIGSEGV). #29782 (Azat Khuzhin). - Backported in #30066: Fix crash of sample by
tuple()
, closes #30004. #30016 (flynn). - Backported in #30332: * Allow identifiers staring with numbers in multiple joins. #30230 (Vladimir C).
- Backported in #30379: fix replaceRegexpAll bug. #30292 (Memo).
NOT FOR CHANGELOG / INSIGNIFICANT
- Do not add const group by key for query with only having. #28975 (Nikolai Kochetov).
- Merging #27963 #29063 (Maksim Kita).
- May be fix s3 tests #29762 (Kseniia Sumarokova).
- Fix ca-bundle.crt in kerberized_hadoop/Dockerfile #30358 (Vladimir C).