ClickHouse/docs/changelogs/v21.3.7.62-stable.md

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sidebar_position: 1
sidebar_label: 2022
---
# 2022 Changelog
2022-05-24 19:54:40 +00:00
### ClickHouse release v21.3.7.62-stable FIXME as compared to v21.3.6.55-lts
#### Improvement
* Backported in [#23014](https://github.com/ClickHouse/ClickHouse/issues/23014): Set `background_fetches_pool_size` to 8 that is better for production usage with frequent small insertions or slow ZooKeeper cluster. [#22945](https://github.com/ClickHouse/ClickHouse/pull/22945) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Backported in [#23081](https://github.com/ClickHouse/ClickHouse/issues/23081): Raised the threshold on max number of matches in result of the function `extractAllGroupsHorizontal`. [#23036](https://github.com/ClickHouse/ClickHouse/pull/23036) ([Vasily Nemkov](https://github.com/Enmk)).
#### Bug Fix
* Backported in [#23156](https://github.com/ClickHouse/ClickHouse/issues/23156): Fixed a bug with unlimited wait for auxiliary AWS requests. [#22594](https://github.com/ClickHouse/ClickHouse/pull/22594) ([Vladimir Chebotarev](https://github.com/excitoon)).
* Backported in [#23033](https://github.com/ClickHouse/ClickHouse/issues/23033): Fix error `Cannot find column in ActionsDAG result` which may happen if subquery uses `untuple`. Fixes [#22290](https://github.com/ClickHouse/ClickHouse/issues/22290). [#22991](https://github.com/ClickHouse/ClickHouse/pull/22991) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#23075](https://github.com/ClickHouse/ClickHouse/issues/23075): Remove non-essential details from suggestions in clickhouse-client. This closes [#22158](https://github.com/ClickHouse/ClickHouse/issues/22158). [#23040](https://github.com/ClickHouse/ClickHouse/pull/23040) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Backported in [#23170](https://github.com/ClickHouse/ClickHouse/issues/23170): Some values were formatted with alignment in center in table cells in `Markdown` format. Not anymore. [#23096](https://github.com/ClickHouse/ClickHouse/pull/23096) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* LibraryDictionarySource fix possible leak [#21686](https://github.com/ClickHouse/ClickHouse/pull/21686) ([Maksim Kita](https://github.com/kitaisreal)).