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ClickHouse/docs/changelogs/v21.5.4.6-prestable.md

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1 2022

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 if ALTER 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).