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3.3 KiB
ClickHouse release v20.12.6.29-stable FIXME as compared to v20.12.5.18-stable
Bug Fix
- Backported in #19984: Background thread which executes
ON CLUSTER
queries might hang waiting for dropped replicated table to do something. It's fixed. #19684 (yiguolei). - Backported in #20240: Fix a bug that moving pieces to destination table may failed in case of launching multiple clickhouse-copiers. #19743 (madianjun).
- Backported in #20080: Fix starting the server with tables having default expressions containing dictGet(). Allow getting return type of dictGet() without loading dictionary. #19805 (Vitaly Baranov).
- Backported in #20298: * Bugfix in StorageJoin. #20079 (Vladimir C).
- Backported in #20391: The
MongoDB
table engine now establishes connection only when it's going to read data.ATTACH TABLE
won't try to connect anymore. #20110 (Vitaly Baranov). - Backported in #20328: Fix rare server crash on config reload during the shutdown. Fixes #19689. #20224 (alesapin).
- Backported in #20332: Restrict to
DROP
orRENAME
version column of*CollapsingMergeTree
andReplacingMergeTree
table engines. #20300 (alesapin). - Backported in #20364: Fix too often retries of failed background tasks for
ReplicatedMergeTree
table engines family. This could lead to too verbose logging and increased CPU load. Fixes #20203. #20335 (alesapin). - Backported in #20377: Fix null dereference with
join_use_nulls=1
. #20344 (Azat Khuzhin). - Backported in #20360: Avoid invalid dereference in RANGE_HASHED() dictionary. #20345 (Azat Khuzhin).