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sidebar_position: 1
sidebar_label: 2024
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# 2024 Changelog

### ClickHouse release v23.8.16.40-lts (e143a9039ba) FIXME as compared to v23.8.15.35-lts (060ff8e813a)

#### Improvement
* Backported in [#66962](https://github.com/ClickHouse/ClickHouse/issues/66962): Added support for parameterized view with analyzer to not analyze create parameterized view. Refactor existing parameterized view logic to not analyze create parameterized view. [#54211](https://github.com/ClickHouse/ClickHouse/pull/54211) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Backported in [#65461](https://github.com/ClickHouse/ClickHouse/issues/65461): Reload certificate chain during certificate reload. [#61671](https://github.com/ClickHouse/ClickHouse/pull/61671) ([Pervakov Grigorii](https://github.com/GrigoryPervakov)).
* Backported in [#65880](https://github.com/ClickHouse/ClickHouse/issues/65880): Always start Keeper with sufficient amount of threads in global thread pool. [#64444](https://github.com/ClickHouse/ClickHouse/pull/64444) ([Duc Canh Le](https://github.com/canhld94)).
* Backported in [#65912](https://github.com/ClickHouse/ClickHouse/issues/65912): Respect cgroup CPU limit in Keeper. [#65819](https://github.com/ClickHouse/ClickHouse/pull/65819) ([Antonio Andelic](https://github.com/antonio2368)).

#### Critical Bug Fix (crash, LOGICAL_ERROR, data loss, RBAC)
* Backported in [#65281](https://github.com/ClickHouse/ClickHouse/issues/65281): Fix crash with UniqInjectiveFunctionsEliminationPass and uniqCombined. [#65188](https://github.com/ClickHouse/ClickHouse/pull/65188) ([Raúl Marín](https://github.com/Algunenano)).
* Backported in [#65368](https://github.com/ClickHouse/ClickHouse/issues/65368): Fix a bug in ClickHouse Keeper that causes digest mismatch during closing session. [#65198](https://github.com/ClickHouse/ClickHouse/pull/65198) ([Aleksei Filatov](https://github.com/aalexfvk)).
* Backported in [#65743](https://github.com/ClickHouse/ClickHouse/issues/65743): Fix crash in maxIntersections. [#65689](https://github.com/ClickHouse/ClickHouse/pull/65689) ([Raúl Marín](https://github.com/Algunenano)).

#### Bug Fix (user-visible misbehavior in an official stable release)
* Backported in [#65351](https://github.com/ClickHouse/ClickHouse/issues/65351): Fix possible abort on uncaught exception in ~WriteBufferFromFileDescriptor in StatusFile. [#64206](https://github.com/ClickHouse/ClickHouse/pull/64206) ([Kruglov Pavel](https://github.com/Avogar)).
* Backported in [#66037](https://github.com/ClickHouse/ClickHouse/issues/66037): Fix crash on destroying AccessControl: add explicit shutdown. [#64993](https://github.com/ClickHouse/ClickHouse/pull/64993) ([Vitaly Baranov](https://github.com/vitlibar)).
* Backported in [#65782](https://github.com/ClickHouse/ClickHouse/issues/65782): Fixed bug in MergeJoin. Column in sparse serialisation might be treated as a column of its nested type though the required conversion wasn't performed. [#65632](https://github.com/ClickHouse/ClickHouse/pull/65632) ([Nikita Taranov](https://github.com/nickitat)).
* Backported in [#65926](https://github.com/ClickHouse/ClickHouse/issues/65926): For queries that read from `PostgreSQL`, cancel the internal `PostgreSQL` query if the ClickHouse query is finished. Otherwise, `ClickHouse` query cannot be canceled until the internal `PostgreSQL` query is finished. [#65771](https://github.com/ClickHouse/ClickHouse/pull/65771) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#65822](https://github.com/ClickHouse/ClickHouse/issues/65822): Fix a bug in short circuit logic when old analyzer and dictGetOrDefault is used. [#65802](https://github.com/ClickHouse/ClickHouse/pull/65802) ([jsc0218](https://github.com/jsc0218)).
* Backported in [#66449](https://github.com/ClickHouse/ClickHouse/issues/66449): Fixed a bug in ZooKeeper client: a session could get stuck in unusable state after receiving a hardware error from ZooKeeper. For example, this might happen due to "soft memory limit" in ClickHouse Keeper. [#66140](https://github.com/ClickHouse/ClickHouse/pull/66140) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Backported in [#66717](https://github.com/ClickHouse/ClickHouse/issues/66717): Correctly track memory for `Allocator::realloc`. [#66548](https://github.com/ClickHouse/ClickHouse/pull/66548) ([Antonio Andelic](https://github.com/antonio2368)).

#### NOT FOR CHANGELOG / INSIGNIFICANT

* Backported in [#65080](https://github.com/ClickHouse/ClickHouse/issues/65080): Follow up to [#56541](https://github.com/ClickHouse/ClickHouse/issues/56541). [#57141](https://github.com/ClickHouse/ClickHouse/pull/57141) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Backported in [#65913](https://github.com/ClickHouse/ClickHouse/issues/65913): Fix bug with session closing in Keeper. [#65735](https://github.com/ClickHouse/ClickHouse/pull/65735) ([Antonio Andelic](https://github.com/antonio2368)).
* Backported in [#66853](https://github.com/ClickHouse/ClickHouse/issues/66853): Fix data race in S3::ClientCache. [#66644](https://github.com/ClickHouse/ClickHouse/pull/66644) ([Konstantin Morozov](https://github.com/k-morozov)).