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2022 Changelog
ClickHouse release v21.8.3.44-lts FIXME as compared to v21.8.2.19-prestable
Improvement
Bug Fix
- Backported in #27545: Now, scalar subquery always returns
Nullable
result if it's type can beNullable
. It is needed because in case of empty subquery it's result should beNull
. Previously, it was possible to get error about incompatible types (type deduction does not execute scalar subquery, and it could use not-nullable type). Scalar subquery with empty result which can't be converted toNullable
(likeArray
orTuple
) now throws error. Fixes #25411. #26423 (Nikolai Kochetov). - Backported in #26856: ParallelFormattingOutputFormat: Use mutex to handle the join to the collector_thread (https://github.com/ClickHouse/ClickHouse/issues/26694). #26703 (Raúl Marín).
- Backported in #26941: Do not remove data on ReplicatedMergeTree table shutdown to avoid creating data to metadata inconsistency. #26716 (nvartolomei).
- Backported in #26981: Aggregate function parameters might be lost when applying some combinators causing exceptions like
Conversion from AggregateFunction(topKArray, Array(String)) to AggregateFunction(topKArray(10), Array(String)) is not supported
. It's fixed. Fixes #26196 and #26433. #26814 (Alexander Tokmakov). - Backported in #26909: Fix library-bridge ids load. #26834 (Kseniia Sumarokova).
- Backported in #26945: Fix error
Missing columns: 'xxx'
whenDEFAULT
column references other non materialized column withoutDEFAULT
expression. Fixes #26591. #26900 (alesapin). - Backported in #26997: Fix reading of custom TLDs (stops processing with lower buffer or bigger file). #26948 (Azat Khuzhin).
- Backported in #27030: Now partition ID in queries like
ALTER TABLE ... PARTITION ID xxx
validates for correctness. Fixes #25718. #26963 (alesapin). - Backported in #27053: [RFC] Fix possible mutation stack due to race with DROP_RANGE. #27002 (Azat Khuzhin).
- Backported in #27106: Fixed
cache
,complex_key_cache
,ssd_cache
,complex_key_ssd_cache
configuration parsing. Optionsallow_read_expired_keys
,max_update_queue_size
,update_queue_push_timeout_milliseconds
,query_wait_timeout_milliseconds
were not parsed for dictionaries with noncache
type. #27032 (Maksim Kita). - Backported in #27160: Fix synchronization in GRPCServer This PR fixes #27024. #27064 (Vitaly Baranov).
- Backported in #27365: - Fix uninitialized memory in functions
multiSearch*
with empty array, close #27169. #27181 (Vladimir C). - Backported in #27263: In rare cases
system.detached_parts
table might contain incorrect information for some parts, it's fixed. Fixes #27114. #27183 (Alexander Tokmakov). - Backported in #27555: Fix mutation stuck on invalid partitions in non-replicated MergeTree. #27248 (Azat Khuzhin).
- Backported in #27411: Fix
distributed_group_by_no_merge=2
+distributed_push_down_limit=1
oroptimize_distributed_group_by_sharding_key=1
withLIMIT BY
andLIMIT OFFSET
. #27249 (Azat Khuzhin). - Backported in #27507: Fix errors like
Expected ColumnLowCardinality, gotUInt8
orBad cast from type DB::ColumnVector<char8_t> to DB::ColumnLowCardinality
for some queries withLowCardinality
inPREWHERE
. Fixes #23515. #27298 (Nikolai Kochetov). - Backported in #27417: Fix
Cannot find column
error for queries with sampling. Was introduced in #24574. Fixes #26522. #27301 (Nikolai Kochetov). - Backported in #27414: Fixed incorrect validation of partition id for MergeTree tables that created with old syntax. #27328 (Alexander Tokmakov).
- Backported in #27540: Fix incorrect result for query with row-level security, prewhere and LowCardinality filter. Fixes #27179. #27329 (Nikolai Kochetov).
- Backported in #27419: /proc/info contains metrics like. #27361 (Mike Kot).
- Backported in #27472: fix metric BackgroundMessageBrokerSchedulePoolTask, maybe mistyped。. #27452 (Ben).
NOT FOR CHANGELOG / INSIGNIFICANT
- Fix mysql_kill_sync_thread_restore_test #26673 (Vladimir C).
- Fix killing unstopped containers in integration tests. #26818 (Vitaly Baranov).
- Try fix rabbitmq tests #26826 (Kseniia Sumarokova).
- Wait for self datasource to be initialized in test_jdbc_bridge #26827 (Ilya Yatsishin).
- One more library bridge fix #26873 (Kseniia Sumarokova).
- Better integration tests #26894 (Ilya Yatsishin).
- Fix assertions in Replicated database #27033 (Alexander Tokmakov).
- library bridge fixes #27060 (Kseniia Sumarokova).
- Implement
legacy_column_name_of_tuple_literal
in a less intrusive way #27153 (Anton Popov). - Revert #24095. User-level settings will affect queries from view. #27227 (Nikolai Kochetov).
- Update PVS checksum #27317 (Alexander Tokmakov).