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Type: Task
Resolution: Unresolved
Priority: Major - P3
Fix Version/s: None
Affects Version/s: None
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The combination of FCV upgrade/downgrade and retryable writes enabled can cause the timeseries buckets to be closed during test execution. Measurements inserted by the test can end up in more buckets than expected.

In the past we experienced something similar due to data migration in background (~~SERVER-89349~~)

is related to

SERVER-89349 Resharding a timeseries during insertion does not leave the bucket collection optimally compressed

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related to

SERVER-119937 Combination of FCV upgrade/downgrade and retryable write on timeseries collection cause more buckets to be created

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Assignee:: Tommaso Tocci
Reporter:: Tommaso Tocci
Participants:: Tommaso Tocci
Votes:: 0 Vote for this issue
Watchers:: 1 Start watching this issue

Created:: Feb 19 2026 07:10:44 AM UTC
Updated:: Feb 19 2026 11:07:26 AM UTC

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