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sidebar_position: 1
sidebar_label: 2022
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# 2022 Changelog

### ClickHouse release v22.6.6.16-stable (d2a33ebc822) FIXME as compared to v22.6.5.22-stable (47ca5f14a34)

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

* Backported in [#40162](https://github.com/ClickHouse/ClickHouse/issues/40162): fix HashMethodOneNumber get wrong key value when column is const. [#40020](https://github.com/ClickHouse/ClickHouse/pull/40020) ([Duc Canh Le](https://github.com/canhld94)).
* Backported in [#40124](https://github.com/ClickHouse/ClickHouse/issues/40124): Fix bug in collectFilesToSkip() by adding correct file extension(.idx or idx2) for indexes to be recalculated, avoid wrong hard links. Fixed [#39896](https://github.com/ClickHouse/ClickHouse/issues/39896). [#40095](https://github.com/ClickHouse/ClickHouse/pull/40095) ([Jianmei Zhang](https://github.com/zhangjmruc)).
* Backported in [#40209](https://github.com/ClickHouse/ClickHouse/issues/40209): Fix insufficient argument check for encryption functions (found by query fuzzer). This closes [#39987](https://github.com/ClickHouse/ClickHouse/issues/39987). [#40194](https://github.com/ClickHouse/ClickHouse/pull/40194) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Backported in [#40281](https://github.com/ClickHouse/ClickHouse/issues/40281): Fix possible segfault in CapnProto input format. This bug was found and send through ClickHouse bug-bounty [program](https://github.com/ClickHouse/ClickHouse/issues/38986) by *kiojj*. [#40241](https://github.com/ClickHouse/ClickHouse/pull/40241) ([Kruglov Pavel](https://github.com/Avogar)).
* Backported in [#40489](https://github.com/ClickHouse/ClickHouse/issues/40489): Fix rare bug with column TTL for MergeTree engines family: In case of repeated vertical merge the error `Cannot unlink file ColumnName.bin ... No such file or directory.` could happen. [#40346](https://github.com/ClickHouse/ClickHouse/pull/40346) ([alesapin](https://github.com/alesapin)).

#### NOT FOR CHANGELOG / INSIGNIFICANT

* fix heap buffer overflow by limiting http chunk size [#40292](https://github.com/ClickHouse/ClickHouse/pull/40292) ([Sema Checherinda](https://github.com/CheSema)).
* Reduce changelog verbosity in CI [#40360](https://github.com/ClickHouse/ClickHouse/pull/40360) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* DNSResolver remove AI_V4MAPPED, AI_ALL hints [#40502](https://github.com/ClickHouse/ClickHouse/pull/40502) ([Maksim Kita](https://github.com/kitaisreal)).