Project: ClickHouse (App Definition and Development / Database)
File: v21.3.13.9-lts.md

sidebar_position: 1 sidebar_label: 2022 Backported in : Avoid hiding errors like `Limit for rows or bytes to read exceeded` for scalar subqueries. (). Backported in : Kafka storage may support parquet format messages. (). Backported in : Fixed server fault when inserting data through HTTP caused an exception. This fixes . (). Backported in : Fix error `Can't initialize pipeline with empty pipe` for queries with `GLOBAL IN/JOIN` and `usehedgedrequests`. Fixes . (). Backported in : Allow empty HTTP headers. Fixes . (). Backported in : Fix drop partition with intersect fake parts. In rare cases there might be parts with mutation version greater than current block number. (). Backported in : In "multipart/form-data" message consider the CRLF preceding a boundary as part of it. Fixes . (). Backported in : - Fixed the deadlock that can happen during LDAP role (re)mapping, when LDAP group is mapped to a nonexistent local role. (). Backported in : Fix incorrect monotonicity of toWeek function. This fixes . This bug was introduced in https://github.com/ClickHouse/ClickHouse/pull/5212 , and was exposed later by smarter partition pruner. (). Backported in : 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. (). Backported in : Enable reading of subcolumns for distributed tables. (). Fixed remote JDBC bridge timeout connection issue. Closes . (). Backported in : Fix bug which can lead to ZooKeeper client hung inside clickhouse-server. (). Backported in : - 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connection was lost and replica was cloned after restoring the connection, its replication queue might contain outdated entries.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. (). Backported in : Fix bug when exception `Mutation was killed` can be thrown to the client on mutation wait when mutation not loaded into memory yet.

Backported in : Fix extremely rare bug on low-memory servers which can lead to the inability to perform merges without restart. Possibly fixes . (). Backported in : Fixed bug with declaring S3 disk at root of bucket. Earlier, it reported an error: ``` (). Backported in : Fix possible heap-buffer-overflow in Arrow. (). Backported in : Fix extremely rare error `Tagging already tagged part` in replication queue during concurrent `alter move/replace partition`. Possibly fixes . (). Backported in : Fix serialization of splitted nested messages in Protobuf format. This PR fixes . (). Backported in : Fix bug which allows creating tables with columns referencing themselves like `a UInt32 ALIAS a + 1` or `b UInt32 MATERIALIZED b`. Fixes , . (). Backported in : Fix bug with constant maps in mapContains that lead to error `empty column was returned by function mapContains`. Closes . (). Backported in : Fix crash in query with cross join and `joinedsubqueryrequires_alias = 0`. Fixes . (). Backported in : Fix TOCTOU error in installation script. (). Backported in : Fix joinGetOrNull with not-nullable columns. This fixes . (). Backported in : 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 . (). Backported in : Fix Logical Error Cannot sum Array/Tuple in min/maxMap. (). Backported in : Support `SimpleAggregateFunction(LowCardinality)` for `SummingMergeTree`. Fixes . (). Backported in : 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. (). Backported in : Fix the possibility of non-deterministic behaviour of the `quantileDeterministic` function and similar. This closes . (). Backported in : Fix lost `WHERE` condition in expression-push-down optimization of query plan (setting `queryplanfilterpushdown = 1` by default). Fixes . (). Backported in : Fix `REPLACE` column transformer when used in DDL by correctly quoting the formated query. This fixes . (). Backported in : Fix segfault when sharding_key is absent in task config for copier. (). NO CL ENTRY: 'Revert "Backport to 21.3: Remove endless `wait` from ZooKeeper client"'. (). Try fix `testconsistentpartsafterclone_replica` (). DictionaryLoader unnecessary dictionary configuration creation fix ().