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2022 Changelog
ClickHouse release v21.1.2.15-stable FIXME as compared to v21.1.1.5646-prestable
Improvement
- Backported in #19148: Explicitly set uid / gid of clickhouse user & group to the fixed values (101) in clickhouse-server images. #19096 (filimonov).
Bug Fix
- Backported in #19203:
SELECT count() FROM table
now can be executed if only one any column can be selected from thetable
. This PR fixes #10639. #18233 (Vitaly Baranov). - Backported in #19161: Fix index analysis of binary functions with constant argument which leads to wrong query results. This fixes #18364. #18373 (Amos Bird).
- Backported in #18948: Fixed
Attempt to read after eof
error when trying toCAST
NULL
fromNullable(String)
toNullable(Decimal(P, S))
. Now functionCAST
returnsNULL
when it cannot parse decimal from nullable string. Fixes #7690. #18718 (Winter Zhang). - Backported in #18934: Fix issue with
bitmapOrCardinality
that may lead to nullptr dereference. This closes #18911. #18912 (sundyli). - Backported in #19115: Attach partition should reset the mutation. #18804. #18935 (fastio).
- Backported in #18966: Fix bug when mutation with some escaped text (like
ALTER ... UPDATE e = CAST('foo', 'Enum8(\'foo\' = 1')
serialized incorrectly. Fixes #18878. #18944 (alesapin). - Backported in #19005: Fix error
Task was not found in task queue
(possible only for remote queries, withasync_socket_for_remote = 1
). #18964 (Nikolai Kochetov). - Backported in #19009: Fix incorrect behavior when
ALTER TABLE ... DROP PART 'part_name'
query removes all deduplication blocks for the whole partition. Fixes #18874. #18969 (alesapin). - Backported in #19193: Fixed very rare deadlock at shutdown. #18977 (Alexander Tokmakov).
- Backported in #19004: Fix possible exception
QueryPipeline stream: different number of columns
caused by merging of query plan'sExpression
steps. Fixes #18190. #18980 (Nikolai Kochetov). - Backported in #19045: Disable
optimize_move_functions_out_of_any
because optimization is not always correct. This closes #18051. This closes #18973. #18981 (Alexey Milovidov). - Backported in #19070: Join tries to materialize const columns, but our code waits for them in other places. #18982 (Nikita Mikhaylov).
- Backported in #19053: Fix inserting of
LowCardinality
column to table withTinyLog
engine. Fixes #18629. #19010 (Nikolai Kochetov). - Backported in #19081: Fix possible error
Expected single dictionary argument for function
if use functionignore
withLowCardinality
argument. Fixes #14275. #19016 (Nikolai Kochetov). - Backported in #19046: Make sure
groupUniqArray
returns correct type for argument of Enum type. This closes #17875. #19019 (Alexey Milovidov). - Backported in #19126: Restrict
MODIFY TTL
queries forMergeTree
tables created in old syntax. Previously the query succeeded, but actually it had no effect. #19064 (Anton Popov). - Backported in #19121: Simplify the implementation of
tupleHammingDistance
. Support for tuples of any equal length. Fixes #19029. #19084 (Nikolai Kochetov). - Backported in #19150: Fix startup bug when clickhouse was not able to read compression codec from
LowCardinality(Nullable(...))
and throws exceptionAttempt to read after EOF
. Fixes #18340. #19101 (alesapin). - Backported in #19177: Fix bug in merge tree data writer which can lead to marks with bigger size than fixed granularity size. Fixes #18913. #19123 (alesapin).
- Backported in #19179: Fix infinite reading from file in
ORC
format (was introduced in #10580). Fixes #19095. #19134 (Nikolai Kochetov). - Backported in #19178: - Split RemoteQueryExecutorReadContext into module part - Fix leaking of pipe fd for
async_socket_for_remote
. #19153 (Azat Khuzhin).