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ClickHouse release v20.8.4.11-lts FIXME as compared to v20.8.3.18-stable
Improvement
- Backported in #15569: Now it's possible to change the type of version column for
VersionedCollapsingMergeTree
withALTER
query. #15442 (alesapin).
Bug Fix
- Backported in #15017: Fixed the incorrect sorting order of
Nullable
column. This fixes #14344. #14495 (Nikita Mikhaylov). - Backported in #14823: Fix wrong monotonicity detection for shrunk
Int -> Int
cast of signed types. It might lead to incorrect query result. This bug is unveiled in #14513. #14783 (Amos Bird). - Backported in #15148: Fix a problem where the server may get stuck on startup while talking to ZooKeeper, if the configuration files have to be fetched from ZK (using the
from_zk
include option). This fixes #14814. #14843 (Alexander Kuzmenkov). - Backported in #15251: Fixed segfault in CacheDictionary #14837. #14879 (Nikita Mikhaylov).
- Backported in #14955: Fixed
.metadata.tmp File exists
error when usingMaterializeMySQL
database engine. #14898 (Winter Zhang). - Backported in #14987: Publish CPU frequencies per logical core in
system.asynchronous_metrics
. This fixes #14923. #14924 (Alexander Kuzmenkov). - Backported in #14969: Fix to make predicate push down work when subquery contains finalizeAggregation function. Fixes #14847. #14937 (filimonov).
- Backported in #15053: Now settings
number_of_free_entries_in_pool_to_execute_mutation
andnumber_of_free_entries_in_pool_to_lower_max_size_of_merge
can be equal tobackground_pool_size
. #14975 (alesapin). - Backported in #15077: Fix crash in RIGHT or FULL JOIN with join_algorith='auto' when memory limit exceeded and we should change HashJoin with MergeJoin. #15002 (Artem Zuikov).
- Backported in #15102: Fixed
Cannot rename ... errno: 22, strerror: Invalid argument
error on DDL query execution in Atomic database when running clickhouse-server in docker on Mac OS. #15024 (Alexander Tokmakov). - Backported in #15056: If function
bar
was called with specifically crafted arguments, buffer overflow was possible. This closes #13926. #15028 (Alexey Milovidov). - Backported in #15049: We already use padded comparison between String and FixedString (https://github.com/ClickHouse/ClickHouse/blob/master/src/Functions/FunctionsComparison.h#L333). This PR applies the same logic to field comparison which corrects the usage of FixedString as primary keys. This fixes #14908. #15033 (Amos Bird).
- Backported in #15142: Fixes
Data compressed with different methods
injoin_algorithm='auto'
. Keep LowCardinality as type for left table join key injoin_algorithm='partial_merge'
. #15088 (Artem Zuikov). - Backported in #15208: Adjust decimals field size in mysql column definition packet. #15152 (maqroll).
- Backported in #15222: Fix bug in table engine
Buffer
which doesn't allow to insert data of new structure intoBuffer
afterALTER
query. Fixes #15117. #15192 (alesapin). - Backported in #15405: Fix instance crash when using joinGet with LowCardinality types. This fixes #15214. #15220 (Amos Bird).
- Backported in #15489: Fix 'Unknown identifier' in GROUP BY when query has JOIN over Merge table. #15242 (Artem Zuikov).
- Backported in #15281: Fix MSan report in QueryLog. Uninitialized memory can be used for the field
memory_usage
. #15258 (Alexey Milovidov). - Backported in #15402: Fix hang of queries with a lot of subqueries to same table of
MySQL
engine. Previously, if there were more than 16 subqueries to sameMySQL
table in query, it hang forever. #15299 (Anton Popov). - Backported in #15338: Fix rare race condition on server startup when system.logs are enabled. #15300 (alesapin).
- Backported in #15334: Fix race condition during MergeTree table rename and background cleanup. #15304 (alesapin).
- Backported in #15447: Report proper error when the second argument of
boundingRatio
aggregate function has a wrong type. #15407 (detailyang). - Backported in #15505: Fix bug with event subscription in DDLWorker which rarely may lead to query hangs in
ON CLUSTER
. Introduced in #13450. #15477 (alesapin). - Backported in #15550: Fix
Missing columns
errors when selecting columns which absent in data, but depend on other columns which also absent in data. Fixes #15530. #15532 (alesapin). - Backported in #15558: Fix bug when
ILIKE
operator stops being case insensitive ifLIKE
with the same pattern was executed. #15536 (alesapin). - Backported in #15726: Mutation might hang waiting for some non-existent part after
MOVE
orREPLACE PARTITION
or, in rare cases, afterDETACH
orDROP PARTITION
. It's fixed. #15537 (Alexander Tokmakov). - Backported in #15652: Fix 'Database doesn't exist.' in queries with IN and Distributed table when there's no database on initiator. #15538 (Artem Zuikov).
- Backported in #15629: Significantly reduce memory usage in AggregatingInOrderTransform/optimize_aggregation_in_order. #15543 (Azat Khuzhin).
- Backported in #15585: Prevent the possibility of error message
Could not calculate available disk space (statvfs), errno: 4, strerror: Interrupted system call
. This fixes #15541. #15557 (Alexey Milovidov). - Backported in #15666: Fixed
Element ... is not a constant expression
error when usingJSON*
function result inVALUES
,LIMIT
or right side ofIN
operator. #15589 (Alexander Tokmakov). - Backported in #15715: Fix the order of destruction for resources in
ReadFromStorage
step of query plan. It might cause crashes in rare cases. Possibly connected with #15610. #15645 (Nikolai Kochetov).