Cherry pick #93612 to 25.12: Fix flaky test_disallow_concurrency#93933
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robot-clickhouse merged 16 commits intobackport/25.12/93612from Jan 12, 2026
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Cherry pick #93612 to 25.12: Fix flaky test_disallow_concurrency#93933robot-clickhouse merged 16 commits intobackport/25.12/93612from
robot-clickhouse merged 16 commits intobackport/25.12/93612from
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…on race When restoring a ReplicatedMergeTree table ON CLUSTER, multiple replicas restore the same parts concurrently. If one replica commits a part to ZooKeeper first, the other replica's part gets deduplicated. The code assumed deduplicated parts always came from ATTACH PART (located in detached/attaching_*) and threw LOGICAL_ERROR for other paths, causing the server to abort. During restore, parts are in tmp_restore_* directories instead. Now deduplicated parts from restore are simply removed since the data already exists on another replica and will be fetched via normal replication.
Co-authored-by: Copilot <[email protected]>
This reverts commit 45fd898.
Fix flaky test_disallow_concurrency
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Original pull-request #93612
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
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