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ClickHouse/docs/changelogs/v21.3.13.9-lts.md

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---
sidebar_position: 1
sidebar_label: 2022
---
# 2022 Changelog
### ClickHouse release v21.3.13.9-lts FIXME as compared to v21.3.12.2-lts
#### Improvement
* Backported in [#24794](https://github.com/ClickHouse/ClickHouse/issues/24794): Avoid hiding errors like `Limit for rows or bytes to read exceeded` for scalar subqueries. [#24545](https://github.com/ClickHouse/ClickHouse/pull/24545) ([nvartolomei](https://github.com/nvartolomei)).
#### Bug Fix
* Backported in [#25567](https://github.com/ClickHouse/ClickHouse/issues/25567): Kafka storage may support parquet format messages. [#23412](https://github.com/ClickHouse/ClickHouse/pull/23412) ([Chao Ma](https://github.com/godliness)).
* Backported in [#24554](https://github.com/ClickHouse/ClickHouse/issues/24554): Fixed server fault when inserting data through HTTP caused an exception. This fixes [#23512](https://github.com/ClickHouse/ClickHouse/issues/23512). [#23643](https://github.com/ClickHouse/ClickHouse/pull/23643) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Backported in [#23833](https://github.com/ClickHouse/ClickHouse/issues/23833): Fix error `Can't initialize pipeline with empty pipe` for queries with `GLOBAL IN/JOIN` and `use_hedged_requests`. Fixes [#23431](https://github.com/ClickHouse/ClickHouse/issues/23431). [#23805](https://github.com/ClickHouse/ClickHouse/pull/23805) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#24703](https://github.com/ClickHouse/ClickHouse/issues/24703): Allow empty HTTP headers. Fixes [#23901](https://github.com/ClickHouse/ClickHouse/issues/23901). [#24285](https://github.com/ClickHouse/ClickHouse/pull/24285) ([Ivan](https://github.com/abyss7)).
* Backported in [#24702](https://github.com/ClickHouse/ClickHouse/issues/24702): Fix drop partition with intersect fake parts. In rare cases there might be parts with mutation version greater than current block number. [#24321](https://github.com/ClickHouse/ClickHouse/pull/24321) ([Amos Bird](https://github.com/amosbird)).
* Backported in [#24725](https://github.com/ClickHouse/ClickHouse/issues/24725): In "multipart/form-data" message consider the CRLF preceding a boundary as part of it. Fixes [#23905](https://github.com/ClickHouse/ClickHouse/issues/23905). [#24399](https://github.com/ClickHouse/ClickHouse/pull/24399) ([Ivan](https://github.com/abyss7)).
* Backported in [#24826](https://github.com/ClickHouse/ClickHouse/issues/24826): - Fixed the deadlock that can happen during LDAP role (re)mapping, when LDAP group is mapped to a nonexistent local role. [#24431](https://github.com/ClickHouse/ClickHouse/pull/24431) ([Denis Glazachev](https://github.com/traceon)).
* Backported in [#25566](https://github.com/ClickHouse/ClickHouse/issues/25566): Fix incorrect monotonicity of toWeek function. This fixes [#24422](https://github.com/ClickHouse/ClickHouse/issues/24422) . This bug was introduced in https://github.com/ClickHouse/ClickHouse/pull/5212 , and was exposed later by smarter partition pruner. [#24446](https://github.com/ClickHouse/ClickHouse/pull/24446) ([Amos Bird](https://github.com/amosbird)).
* Backported in [#24700](https://github.com/ClickHouse/ClickHouse/issues/24700): Fixed the behavior when query `SYSTEM RESTART REPLICA` or `SYSTEM SYNC REPLICA` is being processed infinitely. This was detected on server with extremely little amount of RAM. [#24457](https://github.com/ClickHouse/ClickHouse/pull/24457) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Backported in [#24698](https://github.com/ClickHouse/ClickHouse/issues/24698): Enable reading of subcolumns for distributed tables. [#24472](https://github.com/ClickHouse/ClickHouse/pull/24472) ([Anton Popov](https://github.com/CurtizJ)).
* Fixed remote JDBC bridge timeout connection issue. Closes [#9609](https://github.com/ClickHouse/ClickHouse/issues/9609). [#24588](https://github.com/ClickHouse/ClickHouse/pull/24588) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#24771](https://github.com/ClickHouse/ClickHouse/issues/24771): Fix bug which can lead to ZooKeeper client hung inside clickhouse-server. [#24721](https://github.com/ClickHouse/ClickHouse/pull/24721) ([alesapin](https://github.com/alesapin)).
* Backported in [#24934](https://github.com/ClickHouse/ClickHouse/issues/24934): - If ZooKeeper connection was lost and replica was cloned after restoring the connection, its replication queue might contain outdated entries. It's fixed. - Fixed crash when replication queue contains intersecting virtual parts. It may rarely happen if some data part was lost. Print error in log instead of terminating. [#24777](https://github.com/ClickHouse/ClickHouse/pull/24777) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Backported in [#24850](https://github.com/ClickHouse/ClickHouse/issues/24850): Fix bug when exception `Mutation was killed` can be thrown to the client on mutation wait when mutation not loaded into memory yet. [#24809](https://github.com/ClickHouse/ClickHouse/pull/24809) ([alesapin](https://github.com/alesapin)).
* Backported in [#24917](https://github.com/ClickHouse/ClickHouse/issues/24917): Fix extremely rare bug on low-memory servers which can lead to the inability to perform merges without restart. Possibly fixes [#24603](https://github.com/ClickHouse/ClickHouse/issues/24603). [#24872](https://github.com/ClickHouse/ClickHouse/pull/24872) ([alesapin](https://github.com/alesapin)).
* Backported in [#25185](https://github.com/ClickHouse/ClickHouse/issues/25185): Fixed bug with declaring S3 disk at root of bucket. Earlier, it reported an error: ``` [heather] 2021.05.10 02:11:11.932234 [ 72790 ] {2ff80b7b-ec53-41cb-ac35-19bb390e1759} <Error> executeQuery: Code: 36, e.displayText() = DB::Exception: Key name is empty in path style S3 URI: (http://172.17.0.2/bucket/) (version 21.6.1.1) (from 127.0.0.1:47994) (in query: SELECT policy_name FROM system.storage_policies), Stack trace (when copying this message, always include the lines below):. [#24898](https://github.com/ClickHouse/ClickHouse/pull/24898) ([Vladimir Chebotarev](https://github.com/excitoon)).
* Backported in [#24949](https://github.com/ClickHouse/ClickHouse/issues/24949): Fix possible heap-buffer-overflow in Arrow. [#24922](https://github.com/ClickHouse/ClickHouse/pull/24922) ([Kruglov Pavel](https://github.com/Avogar)).
* Backported in [#25562](https://github.com/ClickHouse/ClickHouse/issues/25562): Fix extremely rare error `Tagging already tagged part` in replication queue during concurrent `alter move/replace partition`. Possibly fixes [#22142](https://github.com/ClickHouse/ClickHouse/issues/22142). [#24961](https://github.com/ClickHouse/ClickHouse/pull/24961) ([alesapin](https://github.com/alesapin)).
* Backported in [#25367](https://github.com/ClickHouse/ClickHouse/issues/25367): Fix serialization of splitted nested messages in Protobuf format. This PR fixes [#24647](https://github.com/ClickHouse/ClickHouse/issues/24647). [#25000](https://github.com/ClickHouse/ClickHouse/pull/25000) ([Vitaly Baranov](https://github.com/vitlibar)).
* Backported in [#25561](https://github.com/ClickHouse/ClickHouse/issues/25561): Fix bug which allows creating tables with columns referencing themselves like `a UInt32 ALIAS a + 1` or `b UInt32 MATERIALIZED b`. Fixes [#24910](https://github.com/ClickHouse/ClickHouse/issues/24910), [#24292](https://github.com/ClickHouse/ClickHouse/issues/24292). [#25059](https://github.com/ClickHouse/ClickHouse/pull/25059) ([alesapin](https://github.com/alesapin)).
* Backported in [#25105](https://github.com/ClickHouse/ClickHouse/issues/25105): Fix bug with constant maps in mapContains that lead to error `empty column was returned by function mapContains`. Closes [#25077](https://github.com/ClickHouse/ClickHouse/issues/25077). [#25080](https://github.com/ClickHouse/ClickHouse/pull/25080) ([Kruglov Pavel](https://github.com/Avogar)).
* Backported in [#25142](https://github.com/ClickHouse/ClickHouse/issues/25142): Fix crash in query with cross join and `joined_subquery_requires_alias = 0`. Fixes [#24011](https://github.com/ClickHouse/ClickHouse/issues/24011). [#25082](https://github.com/ClickHouse/ClickHouse/pull/25082) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#25351](https://github.com/ClickHouse/ClickHouse/issues/25351): Fix TOCTOU error in installation script. [#25277](https://github.com/ClickHouse/ClickHouse/pull/25277) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Backported in [#25473](https://github.com/ClickHouse/ClickHouse/issues/25473): Fix joinGetOrNull with not-nullable columns. This fixes [#24261](https://github.com/ClickHouse/ClickHouse/issues/24261). [#25288](https://github.com/ClickHouse/ClickHouse/pull/25288) ([Amos Bird](https://github.com/amosbird)).
* Backported in [#25361](https://github.com/ClickHouse/ClickHouse/issues/25361): Fix error `Bad cast from type DB::ColumnLowCardinality to DB::ColumnVector<char8_t>` for queries where `LowCardinality` argument was used for IN (this bug appeared in 21.6). Fixes [#25187](https://github.com/ClickHouse/ClickHouse/issues/25187). [#25290](https://github.com/ClickHouse/ClickHouse/pull/25290) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#25355](https://github.com/ClickHouse/ClickHouse/issues/25355): Fix Logical Error Cannot sum Array/Tuple in min/maxMap. [#25298](https://github.com/ClickHouse/ClickHouse/pull/25298) ([Kruglov Pavel](https://github.com/Avogar)).
* Backported in [#25437](https://github.com/ClickHouse/ClickHouse/issues/25437): Support `SimpleAggregateFunction(LowCardinality)` for `SummingMergeTree`. Fixes [#25134](https://github.com/ClickHouse/ClickHouse/issues/25134). [#25300](https://github.com/ClickHouse/ClickHouse/pull/25300) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#25364](https://github.com/ClickHouse/ClickHouse/issues/25364): On ZooKeeper connection loss `ReplicatedMergeTree` table might wait for background operations to complete before trying to reconnect. It's fixed, now background operations are stopped forcefully. [#25306](https://github.com/ClickHouse/ClickHouse/pull/25306) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Backported in [#25387](https://github.com/ClickHouse/ClickHouse/issues/25387): Fix the possibility of non-deterministic behaviour of the `quantileDeterministic` function and similar. This closes [#20480](https://github.com/ClickHouse/ClickHouse/issues/20480). [#25313](https://github.com/ClickHouse/ClickHouse/pull/25313) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Backported in [#25455](https://github.com/ClickHouse/ClickHouse/issues/25455): Fix lost `WHERE` condition in expression-push-down optimization of query plan (setting `query_plan_filter_push_down = 1` by default). Fixes [#25368](https://github.com/ClickHouse/ClickHouse/issues/25368). [#25370](https://github.com/ClickHouse/ClickHouse/pull/25370) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#25406](https://github.com/ClickHouse/ClickHouse/issues/25406): Fix `REPLACE` column transformer when used in DDL by correctly quoting the formated query. This fixes [#23925](https://github.com/ClickHouse/ClickHouse/issues/23925). [#25391](https://github.com/ClickHouse/ClickHouse/pull/25391) ([Amos Bird](https://github.com/amosbird)).
* Backported in [#25505](https://github.com/ClickHouse/ClickHouse/issues/25505): Fix segfault when sharding_key is absent in task config for copier. [#25419](https://github.com/ClickHouse/ClickHouse/pull/25419) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
#### NO CL ENTRY
* NO CL ENTRY: 'Revert "Backport [#24721](https://github.com/ClickHouse/ClickHouse/issues/24721) to 21.3: Remove endless `wait` from ZooKeeper client"'. [#24799](https://github.com/ClickHouse/ClickHouse/pull/24799) ([alesapin](https://github.com/alesapin)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Try fix `test_consistent_parts_after_clone_replica` [#24968](https://github.com/ClickHouse/ClickHouse/pull/24968) ([Alexander Tokmakov](https://github.com/tavplubix)).
* DictionaryLoader unnecessary dictionary configuration creation fix [#25001](https://github.com/ClickHouse/ClickHouse/pull/25001) ([Maksim Kita](https://github.com/kitaisreal)).
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