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ClickHouse/docs/changelogs/v23.1.4.58-stable.md
Alexey Milovidov e0252db8d4 No prestable
2023-03-27 12:19:32 +02:00

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1 2023

2023 Changelog

ClickHouse release v23.1.4.58-stable (9ed562163a) FIXME as compared to v23.1.3.5-stable (548b494bcc)

Performance Improvement

  • Backported in #46380: Fix too big memory usage for vertical merges on non-remote disk. Respect max_insert_delayed_streams_for_parallel_write for the remote disk. #46275 (Nikolai Kochetov).

Improvement

  • Backported in #46985: - Apply ALTER TABLE table_name ON CLUSTER cluster MOVE PARTITION|PART partition_expr TO DISK|VOLUME 'disk_name' to all replicas. Because ALTER TABLE t MOVE is not replicated. #46402 (lizhuoyu5).
  • Backported in #46778: Backward compatibility for T64 codec support for IPv4. #46747 (Yakov Olkhovskiy).
  • Backported in #47020: Allow IPv4 in range(). #46995 (Yakov Olkhovskiy).

Build/Testing/Packaging Improvement

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

  • Backported in #46228: A couple of seg faults have been reported around c-ares. All of the recent stack traces observed fail on inserting into std::unodered_set<>. I believe I have found the root cause of this, it seems to be unprocessed queries. Prior to this PR, CH calls poll to wait on the file descriptors in the c-ares channel. According to the poll docs, a negative return value means an error has ocurred. Because of this, we would abort the execution and return failure. The problem is that poll will also return a negative value if a system interrupt occurs. A system interrupt does not mean the processing has failed or ended, but we would abort it anyways because we were checking for negative values. Once the execution is aborted, the whole stack is destroyed, which includes the std::unordered_set<std::string> passed to the void * parameter of the c-ares callback. Once c-ares completed the request, the callback would be invoked and would access an invalid memory address causing a segfault. #45629 (Arthur Passos).
  • Backported in #46967: Backward compatibility - allow implicit narrowing conversion from UInt64 to IPv4 - required for "INSERT ... VALUES ..." expression. #45865 (Yakov Olkhovskiy).
  • Backported in #46220: Fix reading of non existing nested columns with multiple level in compact parts. #46045 (Azat Khuzhin).
  • Backported in #46751: Follow-up fix for Replace domain IP types (IPv4, IPv6) with native https://github.com/ClickHouse/ClickHouse/pull/43221. #46087 (Yakov Olkhovskiy).
  • Backported in #46448: Fix possible LOGICAL_ERROR in asynchronous inserts with invalid data sent in format VALUES. #46350 (Anton Popov).
  • Backported in #46680: Fix an invalid processing of constant LowCardinality argument in function arrayMap. This bug could lead to a segfault in release, and logical error Bad cast in debug build. #46569 (Alexey Milovidov).
  • Backported in #46873: Fix a bug in the Map data type. This closes #46855. #46856 (Alexey Milovidov).
  • Backported in #46956: Fix result of LIKE predicates which translate to substring searches and contain quoted non-LIKE metacharacters. #46875 (Robert Schulze).

NOT FOR CHANGELOG / INSIGNIFICANT