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ClickHouse/docs/changelogs/v21.7.2.7-stable.md

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Regenerate v21.* changelogs with headers and `not for changelog`
2022-06-23 10:12:54 +00:00
---
sidebar_position: 1
sidebar_label: 2022
---
# 2022 Changelog
Add changelogs for 2021
2022-05-24 19:54:40 +00:00
### ClickHouse release v21.7.2.7-stable FIXME as compared to v21.7.1.7283-prestable
#### Improvement
* Backported in [#25881](https://github.com/ClickHouse/ClickHouse/issues/25881): Allow to start clickhouse-client with unreadable working directory. [#25817](https://github.com/ClickHouse/ClickHouse/pull/25817) ([ianton-ru](https://github.com/ianton-ru)).
#### Bug Fix
* Backported in [#25833](https://github.com/ClickHouse/ClickHouse/issues/25833): `CAST` from `Date` to `DateTime` (or `DateTime64`) was not using the timezone of the `DateTime` type. It can also affect the comparison between `Date` and `DateTime`. Inference of the common type for `Date` and `DateTime` also was not using the corresponding timezone. It affected the results of function `if` and array construction. Closes [#24128](https://github.com/ClickHouse/ClickHouse/issues/24128). [#24129](https://github.com/ClickHouse/ClickHouse/pull/24129) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#25766](https://github.com/ClickHouse/ClickHouse/issues/25766): Fix assertion in PREWHERE with non-uint8 type, close [#19589](https://github.com/ClickHouse/ClickHouse/issues/19589). [#25484](https://github.com/ClickHouse/ClickHouse/pull/25484) ([Vladimir C](https://github.com/vdimir)).
* Backported in [#25954](https://github.com/ClickHouse/ClickHouse/issues/25954): Fix `ALTER MODIFY COLUMN` of columns, which participates in TTL expressions. [#25554](https://github.com/ClickHouse/ClickHouse/pull/25554) ([Anton Popov](https://github.com/CurtizJ)).
* Backported in [#25871](https://github.com/ClickHouse/ClickHouse/issues/25871): Fix rare bug with `DROP PART` query for `ReplicatedMergeTree` tables which can lead to error message `Unexpected merged part intersecting drop range`. [#25783](https://github.com/ClickHouse/ClickHouse/pull/25783) ([alesapin](https://github.com/alesapin)).
* Backported in [#25886](https://github.com/ClickHouse/ClickHouse/issues/25886): Fix ARM exception handling with non default page size. Fixes [#25512](https://github.com/ClickHouse/ClickHouse/issues/25512). Fixes [#25044](https://github.com/ClickHouse/ClickHouse/issues/25044). Fixes [#24901](https://github.com/ClickHouse/ClickHouse/issues/24901). Fixes [#23183](https://github.com/ClickHouse/ClickHouse/issues/23183). Fixes [#20221](https://github.com/ClickHouse/ClickHouse/issues/20221). Fixes [#19703](https://github.com/ClickHouse/ClickHouse/issues/19703). Fixes [#19028](https://github.com/ClickHouse/ClickHouse/issues/19028). Fixes [#18391](https://github.com/ClickHouse/ClickHouse/issues/18391). Fixes [#18121](https://github.com/ClickHouse/ClickHouse/issues/18121). Fixes [#17994](https://github.com/ClickHouse/ClickHouse/issues/17994). Fixes [#12483](https://github.com/ClickHouse/ClickHouse/issues/12483). [#25854](https://github.com/ClickHouse/ClickHouse/pull/25854) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#25957](https://github.com/ClickHouse/ClickHouse/issues/25957): Fix extremely long backoff for background tasks when the background pool is full. Fixes [#25836](https://github.com/ClickHouse/ClickHouse/issues/25836). [#25893](https://github.com/ClickHouse/ClickHouse/pull/25893) ([alesapin](https://github.com/alesapin)).
* Backported in [#25932](https://github.com/ClickHouse/ClickHouse/issues/25932): Fix crash on call dictGet() with bad arguments. [#25913](https://github.com/ClickHouse/ClickHouse/pull/25913) ([Vitaly Baranov](https://github.com/vitlibar)).
* Backported in [#25981](https://github.com/ClickHouse/ClickHouse/issues/25981): Fix possible deadlock during query profiler stack unwinding. Fixes [#25968](https://github.com/ClickHouse/ClickHouse/issues/25968). [#25970](https://github.com/ClickHouse/ClickHouse/pull/25970) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#26010](https://github.com/ClickHouse/ClickHouse/issues/26010): Fix formatting of type `Map` with integer keys to `JSON`. [#25982](https://github.com/ClickHouse/ClickHouse/pull/25982) ([Anton Popov](https://github.com/CurtizJ)).
* Backported in [#26097](https://github.com/ClickHouse/ClickHouse/issues/26097): Fix wrong thread estimation for right subquery join in some cases. Close [#24075](https://github.com/ClickHouse/ClickHouse/issues/24075). [#26052](https://github.com/ClickHouse/ClickHouse/pull/26052) ([Vladimir C](https://github.com/vdimir)).
Regenerate v21.* changelogs with headers and `not for changelog`
2022-06-23 10:12:54 +00:00
#### NOT FOR CHANGELOG / INSIGNIFICANT
* ExpressionCache destruction fix [#25835](https://github.com/ClickHouse/ClickHouse/pull/25835) ([Maksim Kita](https://github.com/kitaisreal)).
* Proper fix of serialization of type Map to JSON [#26048](https://github.com/ClickHouse/ClickHouse/pull/26048) ([Anton Popov](https://github.com/CurtizJ)).
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