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2023 Changelog
ClickHouse release v23.8.3.48-lts (ebe4eb3d23) FIXME as compared to v23.8.2.7-lts (f73c8f3787)
Improvement
- Backported in #54287: Enable allow_remove_stale_moving_parts by default. #54260 (vdimir).
- Backported in #55057: ProfileEvents added ContextLockWaitMicroseconds event. #55029 (Maksim Kita).
Build/Testing/Packaging Improvement
- Backported in #54702: Enrich
changed_images.jsonwith the latest tag from master for images that are not changed in the pull request. #54369 (János Benjamin Antal). - Backported in #54743: Remove redundant
clickhouse-keeper-clientsymlink. #54587 (Tomas Barton). - Backported in #54685: We build and upload them for every push, which isn't worth it. #54675 (Mikhail f. Shiryaev).
Bug Fix (user-visible misbehavior in an official stable release)
- Backported in #54974: Fixed issue when during prewhere optimization compound condition actions DAG can lose output column of intermediate step while this column is required as an input column of some next step. #53492 (Yakov Olkhovskiy).
- Backported in #54996: Parallel replicas either executed completely on the local replica or produce an incorrect result when
prefer_localhost_replica=1. Fixes #54276. #54334 (Igor Nikonov). - Backported in #54516: Fix possible error 'URI contains invalid characters' in s3 table function. Closes #54345. #54373 (Kruglov Pavel).
- Backported in #54418: Check for overflow when handling group number argument for
analysisOfVarianceto avoid crashes. Crash found using WINGFUZZ. #54385 (Antonio Andelic). - Backported in #54527: Reproduce the bug described here #54135. #54430 (Sema Checherinda).
- Backported in #54854: Fix incorrect aggregation projection optimization when using variant aggregate states. This optimization is accidentally enabled but not properly implemented, because after https://github.com/ClickHouse/ClickHouse/pull/39420 the comparison of DataTypeAggregateFunction is normalized. This fixes #54406. #54480 (Amos Bird).
- Backported in #54599: Fix parsing error in WithNames formats while reading subset of columns with disabled input_format_with_names_use_header. Closes #52591. #54513 (Kruglov Pavel).
- Backported in #54594: Starting from version 23.5, zero-copy replication could leave some garbage in ZooKeeper and on S3. It might happen on removal of Outdated parts that were mutated. The issue is indicated by
Failed to get mutation parent on {} for part {}, refusing to remove blobslog messages. #54550 (Alexander Tokmakov). - Backported in #54627: Fix unsynchronised write to a shared variable in
ColumnUnique. #54575 (Nikita Taranov). - Backported in #54625: Fix serialization of
ColumnDecimal. #54601 (Nikita Taranov). - Backported in #54945: Fixed virtual columns (e.g. _file) showing incorrect values with ORDER BY. #54811 (Michael Kolupaev).
- Backported in #54872: Keeper fix: correctly capture a variable in callback to avoid segfaults during shutdown. #54841 (Antonio Andelic).
- Backported in #54950: Fix projection optimization error if table's partition key was ALTERed by extending its Enum type. The fix is to rebuild
minmax_count_projectionwhen partition key gets modified. This fixes #54941. #54943 (Amos Bird).
NOT FOR CHANGELOG / INSIGNIFICANT
- Test libunwind changes. #51436 (Nikolai Kochetov).
- Use pathlib.Path in S3Helper, rewrite build reports, improve small things #54010 (Mikhail f. Shiryaev).
- Properly re-initialize ZooKeeper fault injection #54251 (Alexander Gololobov).
- Fix segfault in system.zookeeper #54326 (Alexander Tokmakov).
- Update automated commit status comment #54441 (vdimir).
- Adjusting
num_streamsby expected work in StorageS3 #54815 (pufit).