ClickHouse/docs/changelogs/v21.10.4.26-stable.md

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1	2022

2022 Changelog

ClickHouse release v21.10.4.26-stable FIXME as compared to v21.10.3.9-stable

Performance Improvement

• Backported in #31731: Improve performance of JSON and XML output formats. #31673 (Alexey Milovidov).

Bug Fix

• Backported in #31573: Quota limit was not reached, but the limit was exceeded. This PR fixes #31174. #31337 (sunny).

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

• Backported in #31518: Remove not like function into RPNElement. #31169 (sundyli).
• Backported in #31554: Resolve nullptr in STS credentials provider for S3. #31409 (Vladimir Chebotarev).
• Backported in #31579: * Disable partial_merge_join_left_table_buffer_bytes before bug in this optimization is fixed. See #31009). * Remove redundant option partial_merge_join_optimizations. #31528 (Vladimir C).
• Backported in #31745: RENAME TABLE query worked incorrectly on attempt to rename an DDL dictionary in Ordinary database, it's fixed. #31638 (Alexander Tokmakov).
• Backported in #31794: Settings input_format_allow_errors_num and input_format_allow_errors_ratio did not work for parsing of domain types, such as IPv4, it's fixed. Fixes #31686. #31697 (Alexander Tokmakov).
• Backported in #31830: Fixed there are no such cluster here error on execution of ON CLUSTER query if specified cluster name is name of Replicated database. #31723 (Alexander Tokmakov).
• Backported in #31815: Fix race in JSONEachRowWithProgress output format when data and lines with progress are mixed in output. #31736 (Kruglov Pavel).
• Backported in #32016: Fix group by / order by / limit by aliases with positional arguments enabled. Closes #31173. #31741 (Kseniia Sumarokova).
• Backported in #31762: Fix usage of Buffer table engine with type Map. Fixes #30546. #31742 (Anton Popov).
• Backported in #31892: Fix possible assertion ../src/IO/ReadBuffer.h:58: bool DB::ReadBuffer::next(): Assertion '!hasPendingData()' failed. in TSKV format. #31804 (Kruglov Pavel).
• Backported in #32031: Fix invalid cast of nullable type when nullable primary key is used. This fixes #31075. #31823 (Amos Bird).
• Backported in #32074: Fix a bug about function transform with decimal args. #31839 (Shuai li).
• Backported in #31939: - 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 #31909: Fix functions empty and notEmpty with arguments of UUID type. Fixes #31819. #31883 (Anton Popov).

NOT FOR CHANGELOG / INSIGNIFICANT

• Support toUInt8/toInt8 for if constant condition optimization. #31866 (Nikolai Kochetov).