ClickHouse/docs/changelogs/v21.3.20.1-lts.md

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# 2022 Changelog

### ClickHouse release v21.3.20.1-lts FIXME as compared to v21.3.19.1-lts

#### Bug Fix
* Backported in [#32690](https://github.com/ClickHouse/ClickHouse/issues/32690): Quota limit was not reached, but the limit was exceeded. This PR fixes [#31174](https://github.com/ClickHouse/ClickHouse/issues/31174). [#31656](https://github.com/ClickHouse/ClickHouse/pull/31656) ([sunny](https://github.com/sunny19930321)).
* Backported in [#33727](https://github.com/ClickHouse/ClickHouse/issues/33727): Fix null pointer dereference in low cardinality data when deserializing LowCardinality data in the Native format. [#33021](https://github.com/ClickHouse/ClickHouse/pull/33021) ([Harry Lee](https://github.com/HarryLeeIBM)).

#### Bug Fix (user-visible misbehaviour in official stable release)

* Backported in [#32791](https://github.com/ClickHouse/ClickHouse/issues/32791): fix crash when used fuzzBits with multiply same FixedString, Close [#32737](https://github.com/ClickHouse/ClickHouse/issues/32737). [#32755](https://github.com/ClickHouse/ClickHouse/pull/32755) ([SuperDJY](https://github.com/cmsxbc)).

#### NOT FOR CHANGELOG / INSIGNIFICANT

* Fix data race in ProtobufSchemas [#27822](https://github.com/ClickHouse/ClickHouse/pull/27822) ([filimonov](https://github.com/filimonov)).
* Fix possible Pipeline stuck in case of StrictResize processor. [#32270](https://github.com/ClickHouse/ClickHouse/pull/32270) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix arraySlice with null args. [#32456](https://github.com/ClickHouse/ClickHouse/pull/32456) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix queries with hasColumnInTable constant condition and non existing column [#32506](https://github.com/ClickHouse/ClickHouse/pull/32506) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Merge [#33024](https://github.com/ClickHouse/ClickHouse/issues/33024) [#33061](https://github.com/ClickHouse/ClickHouse/pull/33061) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Merge [#33022](https://github.com/ClickHouse/ClickHouse/issues/33022) [#33062](https://github.com/ClickHouse/ClickHouse/pull/33062) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Cherry pick [#33065](https://github.com/ClickHouse/ClickHouse/issues/33065) to 21.3: Merge [#33050](https://github.com/ClickHouse/ClickHouse/issues/33050) [#33079](https://github.com/ClickHouse/ClickHouse/issues/33079) [#33578](https://github.com/ClickHouse/ClickHouse/pull/33578) ([Heena Bansal](https://github.com/HeenaBansal2009)).