ClickHouse/docs/changelogs/v21.11.6.7-stable.md

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1	2022

2022 Changelog

ClickHouse release v21.11.6.7-stable FIXME as compared to v21.11.5.33-stable

Bug Fix

• Backported in #32254: Fix skipping columns while writing protobuf. This PR fixes #31160, see the comment #31160#issuecomment-980595318. #31988 (Vitaly Baranov).
• Backported in #32345: 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 release)

• Backported in #32152: Fix crash when function dictGet with type is used for dictionary attribute when type is Nullable. Fixes #30980. #31800 (Maksim Kita).
• Backported in #32298: Fix recursive user defined functions crash. Closes #30856. #31820 (Maksim Kita).
• Backported in #32148: Fixed Directory ... already exists and is not empty error when detaching part. #32063 (Alexander Tokmakov).
• Backported in #32212: Fix CAST from Nullable with cast_keep_nullable (PARAMETER_OUT_OF_BOUND error before for i.e. toUInt32OrDefault(toNullable(toUInt32(1)))). #32080 (Azat Khuzhin).
• Backported in #32283: Dictionaries fix cases when {condition} does not work for custom database queries. #32117 (Maksim Kita).
• Backported in #32482: Fix 'APPLY lambda' parsing which could lead to client/server crash. #32138 (Kruglov Pavel).
• Backported in #32217: 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 #32311: 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 #32354: Fixed crash with SIGFPE in aggregate function avgWeighted with Decimal argument. Fixes #32053. #32303 (Alexander Tokmakov).
• Backported in #32392: Fix ALTER ... MATERIALIZE COLUMN ... queries in case when data type of default expression is not equal to the data type of column. #32348 (Anton Popov).
• Backported in #32418: Fixed the behavior when mutations that have nothing to do are stuck (with enabled setting empty_result_for_aggregation_by_empty_set). #32358 (Nikita Mikhaylov).

NO CL ENTRY

• NO CL ENTRY: 'Manual backport of #31766 into 21.11'. #32202 (Raúl Marín).

NOT FOR CHANGELOG / INSIGNIFICANT

• Fix data race in removePartAndEnqueueFetch(...) #32119 (Alexander Tokmakov).
• Fix possible Pipeline stuck in case of StrictResize processor. #32270 (Nikolai Kochetov).