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Antalya 25.8 Backport of #92588 - Fix crashing at IColumn::shrinkToFit() and IColumn::filter() due to concurrent in-place mutations - #2561

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mkmkme wants to merge 2 commits into
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backports/antalya-25.8/92588
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mkmkme wants to merge 2 commits into
antalya-25.8from
backports/antalya-25.8/92588

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@mkmkme

@mkmkme mkmkme commented Oct 13, 2026

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Changelog category (leave one):

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

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Fix potential crash caused by in place mutation of underlying const PREWHERE columns. This could've happened at column shrinking (IColumn::shrinkToFit) or filtering (IColumn::filter), which could've triggered concurrently from several threads. (ClickHouse#92588 by @arsenmuk)

Documentation entry for user-facing changes

...

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@github-actions

github-actions Bot commented Oct 13, 2026 •

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Workflow [PR], commit [b36e145]

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