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ClickHouse/docs/changelogs/v21.4.7.3-stable.md
Mikhail f. Shiryaev 352c7d6c21
Add changelogs for 2021
2022-05-25 00:05:54 +02:00

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ClickHouse release v21.4.7.3-stable FIXME as compared to v21.4.6.55-stable

Bug Fix

  • Backported in #23971: 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 #23819: Fix crash when PREWHERE and row policy filter are both in effect with empty result. #23763 (Amos Bird).
  • Backported in #23816: Fix CLEAR COLUMN does not work when it is referenced by materialized view. Close #23764. #23781 (flynn).
  • Backported in #23831: Fix error Can't initialize pipeline with empty pipe for queries with GLOBAL IN/JOIN and use_hedged_requests. Fixes #23431. #23805 (Nikolai Kochetov).
  • Backported in #23930: HashedDictionary complex key update field initial load fix. Closes #23800. #23824 (Maksim Kita).
  • Backported in #23957: Fix keys metrics accounting for CACHE() dictionary with duplicates in the source (leads to DictCacheKeysRequestedMiss overflows). #23929 (Azat Khuzhin).
  • Backported in #24003: 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 #24188: Some ALTER PARTITION queries might cause Part A intersects previous part B and Unexpected merged part C intersecting drop range D errors in replication queue. It's fixed. Fixes #23296. #23997 (Alexander Tokmakov).
  • Backported in #24031: Fix crash in MergeJoin, close #24010. #24013 (Vladimir C).
  • Backported in #24141: Bug: explain pipeline withselect xxx finalshows wrong pipeline: ``` dell123 :) explain pipeline select z from prewhere_move_select_final final;. #24116 (hexiaoting).
  • Backported in #24171: Fix a rare bug that could lead to a partially initialized table that can serve write requests (insert/alter/so on). Now such tables will be in readonly mode. #24122 (alesapin).
  • Backported in #24215: Fix race condition which could happen in RBAC under a heavy load. This PR fixes #24090, #24134,. #24176 (Vitaly Baranov).
  • Backported in #24243: Fix abnormal server termination due to hdfs becoming not accessible during query execution. Closes #24117. #24191 (Kseniia Sumarokova).