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34 lines
5.0 KiB
Markdown
34 lines
5.0 KiB
Markdown
---
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sidebar_position: 1
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sidebar_label: 2022
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---
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# 2022 Changelog
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### ClickHouse release v21.1.4.46-stable FIXME as compared to v21.1.3.32-stable
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#### Bug Fix
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* Backported in [#19983](https://github.com/ClickHouse/ClickHouse/issues/19983): Background thread which executes `ON CLUSTER` queries might hang waiting for dropped replicated table to do something. It's fixed. [#19684](https://github.com/ClickHouse/ClickHouse/pull/19684) ([yiguolei](https://github.com/yiguolei)).
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* Backported in [#20238](https://github.com/ClickHouse/ClickHouse/issues/20238): Fix a bug that moving pieces to destination table may failed in case of launching multiple clickhouse-copiers. [#19743](https://github.com/ClickHouse/ClickHouse/pull/19743) ([madianjun](https://github.com/mdianjun)).
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* Backported in [#20074](https://github.com/ClickHouse/ClickHouse/issues/20074): Fix starting the server with tables having default expressions containing dictGet(). Allow getting return type of dictGet() without loading dictionary. [#19805](https://github.com/ClickHouse/ClickHouse/pull/19805) ([Vitaly Baranov](https://github.com/vitlibar)).
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* Backported in [#19997](https://github.com/ClickHouse/ClickHouse/issues/19997): - Fix a segfault in function `fromModifiedJulianDay` when the argument type is `Nullable(T)` for any integral types other than Int32. [#19959](https://github.com/ClickHouse/ClickHouse/pull/19959) ([PHO](https://github.com/depressed-pho)).
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* Backported in [#20122](https://github.com/ClickHouse/ClickHouse/issues/20122): MaterializeMySQL: Fix replication for statements that update several tables. [#20066](https://github.com/ClickHouse/ClickHouse/pull/20066) ([Håvard Kvålen](https://github.com/havardk)).
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* Backported in [#20297](https://github.com/ClickHouse/ClickHouse/issues/20297): * Bugfix in StorageJoin. [#20079](https://github.com/ClickHouse/ClickHouse/pull/20079) ([Vladimir C](https://github.com/vdimir)).
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* Backported in [#20390](https://github.com/ClickHouse/ClickHouse/issues/20390): The `MongoDB` table engine now establishes connection only when it's going to read data. `ATTACH TABLE` won't try to connect anymore. [#20110](https://github.com/ClickHouse/ClickHouse/pull/20110) ([Vitaly Baranov](https://github.com/vitlibar)).
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* Backported in [#20148](https://github.com/ClickHouse/ClickHouse/issues/20148): Fix server crash after query with `if` function with `Tuple` type of then/else branches result. `Tuple` type must contain `Array` or another complex type. Fixes [#18356](https://github.com/ClickHouse/ClickHouse/issues/18356). [#20133](https://github.com/ClickHouse/ClickHouse/pull/20133) ([alesapin](https://github.com/alesapin)).
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* Backported in [#20327](https://github.com/ClickHouse/ClickHouse/issues/20327): Fix rare server crash on config reload during the shutdown. Fixes [#19689](https://github.com/ClickHouse/ClickHouse/issues/19689). [#20224](https://github.com/ClickHouse/ClickHouse/pull/20224) ([alesapin](https://github.com/alesapin)).
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* Backported in [#20331](https://github.com/ClickHouse/ClickHouse/issues/20331): Restrict to `DROP` or `RENAME` version column of `*CollapsingMergeTree` and `ReplacingMergeTree` table engines. [#20300](https://github.com/ClickHouse/ClickHouse/pull/20300) ([alesapin](https://github.com/alesapin)).
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* Backported in [#20363](https://github.com/ClickHouse/ClickHouse/issues/20363): Fix too often retries of failed background tasks for `ReplicatedMergeTree` table engines family. This could lead to too verbose logging and increased CPU load. Fixes [#20203](https://github.com/ClickHouse/ClickHouse/issues/20203). [#20335](https://github.com/ClickHouse/ClickHouse/pull/20335) ([alesapin](https://github.com/alesapin)).
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* Backported in [#20378](https://github.com/ClickHouse/ClickHouse/issues/20378): Fix incorrect result of binary operations between two constant decimals of different scale. Fixes [#20283](https://github.com/ClickHouse/ClickHouse/issues/20283). [#20339](https://github.com/ClickHouse/ClickHouse/pull/20339) ([Maksim Kita](https://github.com/kitaisreal)).
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* Backported in [#20375](https://github.com/ClickHouse/ClickHouse/issues/20375): Fix null dereference with `join_use_nulls=1`. [#20344](https://github.com/ClickHouse/ClickHouse/pull/20344) ([Azat Khuzhin](https://github.com/azat)).
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* Backported in [#20359](https://github.com/ClickHouse/ClickHouse/issues/20359): Avoid invalid dereference in RANGE_HASHED() dictionary. [#20345](https://github.com/ClickHouse/ClickHouse/pull/20345) ([Azat Khuzhin](https://github.com/azat)).
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#### NO CL ENTRY
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* NO CL ENTRY: 'Revert "Backport [#20224](https://github.com/ClickHouse/ClickHouse/issues/20224) to 21.1: Fix access control manager destruction order"'. [#20395](https://github.com/ClickHouse/ClickHouse/pull/20395) ([alesapin](https://github.com/alesapin)).
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#### NOT FOR CHANGELOG / INSIGNIFICANT
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* Use fixed version of confluent-kafka library in integration tests [#20124](https://github.com/ClickHouse/ClickHouse/pull/20124) ([alesapin](https://github.com/alesapin)).
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* Handle syntax error for ARRAY JOIN with no args [#20223](https://github.com/ClickHouse/ClickHouse/pull/20223) ([Vladimir C](https://github.com/vdimir)).
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