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ClickHouse/docs/changelogs/v20.9.6.14-stable.md

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ClickHouse release v20.9.6.14-stable FIXME as compared to v20.9.5.5-stable

Improvement

  • Backported in #17030: Make it possible to connect to clickhouse-server secure endpoint which requires SNI. This is possible when clickhouse-server is hosted behind TLS proxy. #16938 (filimonov).

Bug Fix

  • Backported in #15678: Query is finished faster in case of exception. Cancel execution on remote replicas if exception happens. #15578 (Azat Khuzhin).
  • Backported in #17105: fixes #16574 fixes #16231 fix remote query failure when using 'if' suffix aggregate function. #16610 (Winter Zhang).
  • Backported in #16759: This will fix optimize_read_in_order/optimize_aggregation_in_order with max_threads>0 and expression in ORDER BY. #16637 (Azat Khuzhin).
  • Backported in #16740: Fix IN operator over several columns and tuples with enabled transform_null_in setting. Fixes #15310. #16722 (Anton Popov).
  • Backported in #17023: Fix crash when using any without any arguments. This is for #16803 . cc @azat. #16826 (Amos Bird).
  • Backported in #16879: Abort multipart upload if no data was written to WriteBufferFromS3. #16840 (Pavel Kovalenko).
  • Backported in #16945: Prevent clickhouse server crashes when using TimeSeriesGroupSum. #16865 (filimonov).
  • Backported in #17078: Fix possible error Illegal type of argument for queries with ORDER BY. Fixes #16580. #16928 (Nikolai Kochetov).
  • Backported in #17009: Install script should always create subdirs in config folders. This is only relevant for Docker build with custom config. #16936 (filimonov).
  • Backported in #17013: Fix possible server crash after ALTER TABLE ... MODIFY COLUMN ... NewType when SELECT have WHERE expression on altering column and alter doesn't finished yet. #16968 (Amos Bird).
  • Backported in #17037: Reresolve the IP of the format_avro_schema_registry_url in case of errors. #16985 (filimonov).
  • Backported in #17172: Fix bug when ON CLUSTER queries may hang forever for non-leader ReplicatedMergeTreeTables. #17089 (alesapin).