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2022 Changelog
ClickHouse release v21.5.4.6-prestable FIXME as compared to v21.5.3.1-prestable
Bug Fix
- Backported in #23972: Fixed a bug in recovery of staled
ReplicatedMergeTree
replica. Some metadata updates could be ignored by staled replica ifALTER
query was executed during downtime of the replica. #23742 (Alexander Tokmakov). - Backported in #23956: Fix keys metrics accounting for CACHE() dictionary with duplicates in the source (leads to
DictCacheKeysRequestedMiss
overflows). #23929 (Azat Khuzhin). - Backported in #24001: Fix SIGSEGV for external GROUP BY and overflow row (i.e. queries like
SELECT FROM GROUP BY WITH TOTALS SETTINGS max_bytes_before_external_group_by>0, max_rows_to_group_by>0, group_by_overflow_mode='any', totals_mode='before_having'
). #23962 (Azat Khuzhin). - Backported in #24033: Fix crash in MergeJoin, close #24010. #24013 (Vladimir C).