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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. BecauseALTER 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
- Backported in #46031: Add systemd.service file for clickhouse-keeper. Fixes #44293. #45568 (Mikhail f. Shiryaev).
- Backported in #46477: Get rid of unnecessary build for standalone clickhouse-keeper. #46367 (Mikhail f. Shiryaev).
- Backported in #46511: Some time ago the ccache compression was changed to
zst
, butgz
archives are downloaded by default. It fixes it by prioritizing zst archive. #46490 (Mikhail f. Shiryaev).
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 intostd::unodered_set<>
. I believe I have found the root cause of this, it seems to be unprocessed queries. Prior to this PR, CH callspoll
to wait on the file descriptors in thec-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 thatpoll
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 thestd::unordered_set<std::string>
passed to thevoid *
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 formatVALUES
. #46350 (Anton Popov). - Backported in #46680: Fix an invalid processing of constant
LowCardinality
argument in functionarrayMap
. This bug could lead to a segfault in release, and logical errorBad 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
- Another attempt to fix automerge, or at least to have debug footprint #45476 (Mikhail f. Shiryaev).
- Support DELETE ON CLUSTER #45786 (Alexander Gololobov).
- Add check for running workflows to merge_pr.py #45803 (Mikhail f. Shiryaev).
- Add necessary dependency for sanitizers #45959 (Mikhail f. Shiryaev).
- Add helping logging to auto-merge script #46080 (Mikhail f. Shiryaev).
- Fix write buffer destruction order for vertical merge. #46205 (Nikolai Kochetov).
- Wait for background tasks in ~UploadHelper #46334 (Nikolai Kochetov).
- Improve install_check.py #46458 (Mikhail f. Shiryaev).
- Fix dependencies for InstallPackagesTestAarch64 #46597 (Mikhail f. Shiryaev).
- Get rid of legacy DocsReleaseChecks #46665 (Mikhail f. Shiryaev).
- Reduce updates of Mergeable Check #46781 (Mikhail f. Shiryaev).