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sidebar_position: 1
sidebar_label: 2022
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# 2022 Changelog

### ClickHouse release v21.7.5.29-stable FIXME as compared to v21.7.4.18-stable

#### Performance Improvement
* Backported in [#26526](https://github.com/ClickHouse/ClickHouse/issues/26526): Improve latency of short queries, that require reading from tables with large number of columns. [#26371](https://github.com/ClickHouse/ClickHouse/pull/26371) ([Anton Popov](https://github.com/CurtizJ)).

#### Bug Fix
* Backported in [#26787](https://github.com/ClickHouse/ClickHouse/issues/26787): Fix zstd decompression in case there are escape sequences at the end of internal buffer. Closes [#26013](https://github.com/ClickHouse/ClickHouse/issues/26013). [#26314](https://github.com/ClickHouse/ClickHouse/pull/26314) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Backported in [#26487](https://github.com/ClickHouse/ClickHouse/issues/26487): Fix broken name resolution after rewriting column aliases. This fixes [#26432](https://github.com/ClickHouse/ClickHouse/issues/26432). [#26475](https://github.com/ClickHouse/ClickHouse/pull/26475) ([Amos Bird](https://github.com/amosbird)).
* Backported in [#26615](https://github.com/ClickHouse/ClickHouse/issues/26615): Fix issues with `CREATE DICTIONARY` query if dictionary name or database name was quoted. Closes [#26491](https://github.com/ClickHouse/ClickHouse/issues/26491). [#26508](https://github.com/ClickHouse/ClickHouse/pull/26508) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#26606](https://github.com/ClickHouse/ClickHouse/issues/26606): Fix crash in rabbitmq shutdown in case rabbitmq setup was not started. Closes [#26504](https://github.com/ClickHouse/ClickHouse/issues/26504). [#26529](https://github.com/ClickHouse/ClickHouse/pull/26529) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Backported in [#26612](https://github.com/ClickHouse/ClickHouse/issues/26612): Update `chown` cmd check in clickhouse-server docker entrypoint. It fixes the bug that cluster pod restart failed (or timeout) on kubernetes. [#26545](https://github.com/ClickHouse/ClickHouse/pull/26545) ([Ky Li](https://github.com/Kylinrix)).
* Backported in [#26647](https://github.com/ClickHouse/ClickHouse/issues/26647): Fix incorrect function names of groupBitmapAnd/Or/Xor. This fixes. [#26557](https://github.com/ClickHouse/ClickHouse/pull/26557) ([Amos Bird](https://github.com/amosbird)).
* Backported in [#26704](https://github.com/ClickHouse/ClickHouse/issues/26704): Fix potential nullptr dereference in window functions. This fixes [#25276](https://github.com/ClickHouse/ClickHouse/issues/25276). [#26668](https://github.com/ClickHouse/ClickHouse/pull/26668) ([Alexander Kuzmenkov](https://github.com/akuzm)).
* Backported in [#26772](https://github.com/ClickHouse/ClickHouse/issues/26772): Sometimes SET ROLE could work incorrectly, this PR fixes that. [#26707](https://github.com/ClickHouse/ClickHouse/pull/26707) ([Vitaly Baranov](https://github.com/vitlibar)).
* Backported in [#26907](https://github.com/ClickHouse/ClickHouse/issues/26907): Fix library-bridge ids load. [#26834](https://github.com/ClickHouse/ClickHouse/pull/26834) ([Kseniia Sumarokova](https://github.com/kssenii)).

#### NOT FOR CHANGELOG / INSIGNIFICANT

* Remove MySQLWireContext [#26429](https://github.com/ClickHouse/ClickHouse/pull/26429) ([Vitaly Baranov](https://github.com/vitlibar)).
* Update link to dpkg-deb in dockerfiles [#26497](https://github.com/ClickHouse/ClickHouse/pull/26497) ([Vladimir C](https://github.com/vdimir)).
* Try fix rabbitmq tests [#26826](https://github.com/ClickHouse/ClickHouse/pull/26826) ([Kseniia Sumarokova](https://github.com/kssenii)).
* One more library bridge fix [#26873](https://github.com/ClickHouse/ClickHouse/pull/26873) ([Kseniia Sumarokova](https://github.com/kssenii)).
