ClickHouse/docs/changelogs/v21.8.13.6-lts.md

ClickHouse release v21.8.13.6-lts FIXME as compared to v21.8.12.29-lts

Bug Fix

• Backported in #32688: Quota limit was not reached, but the limit was exceeded. This PR fixes #31174. #31656 (sunny).
• Backported in #32343: Fix bug when remove unneeded columns in subquery. If there is an aggregation function in query without group by, do not remove if it is unneeded. #32289 (dongyifeng).

Bug Fix (user-visible misbehaviour in official stable or prestable release)

• Backported in #32108: Fix crash with empty result on odbc query. Closes #31465. #31766 (Kseniia Sumarokova).
• Backported in #32150: Fix crash when function dictGet with type is used for dictionary attribute when type is Nullable. Fixes #30980. #31800 (Maksim Kita).
• Backported in #32075: Fix a bug about function transform with decimal args. #31839 (Shuai li).
• Backported in #31955: - Change configuration path from keeper_server.session_timeout_ms to keeper_server.coordination_settings.session_timeout_ms when constructing a KeeperTCPHandler - Same with operation_timeout. #31859 (JackyWoo).
• Backported in #32161: Some GET_PART entry might hang in replication queue if part is lost on all replicas and there are no other parts in the same partition. It's fixed in cases when partition key contains only columns of integer types or Date[Time]. Fixes #31485. #31887 (Alexander Tokmakov).
• Backported in #32146: Fixed Directory ... already exists and is not empty error when detaching part. #32063 (Alexander Tokmakov).
• Backported in #32213: Number of active replicas might be determined incorrectly when inserting with quorum if setting replicated_can_become_leader is disabled on some replicas. It's fixed. #32157 (Alexander Tokmakov).
• Backported in #32312: XML dictionaries identifiers, used in table create query, can be qualified to default_database during upgrade to newer version. Closes #31963. #32187 (Maksim Kita).
• Backported in #32540: Some replication queue entries might hang for temporary_directories_lifetime (1 day by default) with Directory tmp_merge_<part_name> or Part ... (state Deleting) already exists, but it will be deleted soon or similar error. It's fixed. Fixes #29616. #32201 (Alexander Tokmakov).
• Backported in #32353: Fixed crash with SIGFPE in aggregate function avgWeighted with Decimal argument. Fixes #32053. #32303 (Alexander Tokmakov).
• Backported in #33048: Fix possible exception at RabbitMQ storage startup by delaying channel creation. #32584 (Kseniia Sumarokova).
• Backported in #32795: fix crash when used fuzzBits with multiply same FixedString, Close #32737. #32755 (SuperDJY).

Bug Fix (user-visible misbehaviour in official stable or prestable release):

• Backported in #32659: Fix possible crash (or incorrect result) in case of LowCardinality arguments of window function. Fixes #31114. #31888 (Nikolai Kochetov).

NO CL ENTRY

• NO CL ENTRY: 'fix json error after downgrade'. #33166 (bullet1337).