Cherry pick #99042 to 26.2: Fix crash in CachedOnDiskReadBufferFromFile destructor#99234
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robot-clickhouse merged 2 commits intobackport/26.2/99042from Mar 11, 2026
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Fix crash in CachedOnDiskReadBufferFromFile destructor
robot-clickhouse
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pr-cherrypick
robot-clickhouse
merged commit 4012d39
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backport/26.2/99042
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Original pull-request #99042
Do not merge this PR manually
This pull-request is a first step of an automated backporting.
It contains changes similar to calling
git cherry-picklocally.If you intend to continue backporting the changes, then resolve all conflicts if any.
Otherwise, if you do not want to backport them, then just close this pull-request.
The check results does not matter at this step - you can safely ignore them.
Troubleshooting
If the conflicts were resolved in a wrong way
If this cherry-pick PR is completely screwed by a wrong conflicts resolution, and you want to recreate it:
pr-cherrypicklabel from the PRYou also need to check the Original pull-request for
pr-backports-createdlabel, and delete if it's presented thereThe PR source
The PR is created in the CI job
Note
Low Risk
Low risk null-check fix: prevents a potential crash when destructor tries to log cache activity without an initialized
state. No behavior change beyond skipping the log record in that edge case.Overview
Prevents a crash in
CachedOnDiskReadBufferFromFiledestruction by only callingappendFilesystemCacheLog(...)whenstateis present, avoiding dereferencing a nullstatewhile still cleaning up/finishing any remaining file segments.Written by Cursor Bugbot for commit 587e799. This will update automatically on new commits. Configure here.