Fix flaky test 03221_merge_profile_events#96964
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alexey-milovidov merged 1 commit intomasterfrom Feb 15, 2026
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Remove the `ProfileEvents['UserTimeMicroseconds'] > 0` check from all three queries. This counter comes from `getrusage` which has coarse resolution (typically 1-4 ms on Linux). For small/fast merges (20000 rows), the operation completes so quickly that user time rounds down to zero, causing sporadic failures. The higher-resolution `OSCPUVirtualTimeMicroseconds` check (via `clock_gettime(CLOCK_THREAD_CPUTIME_ID)`) is retained. #85891 Co-Authored-By: Claude Opus 4.6 <[email protected]>
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…erge-profile-events Fix flaky test 03221_merge_profile_events
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Remove the
ProfileEvents['UserTimeMicroseconds'] > 0check from all three queries in the test. This counter comes fromgetrusagewhich has coarse resolution (typically 1-4 ms on Linux). For small/fast merges (20000 rows), the operation completes so quickly that user time rounds down to zero, causing sporadic failures.The higher-resolution
OSCPUVirtualTimeMicrosecondscheck (viaclock_gettime(CLOCK_THREAD_CPUTIME_ID)) is retained.Fixes #85891
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