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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Catalog and Routing
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Fully Compatible
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v9.0
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CAR Team 2026-08-03
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200
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This issue is the same as described in SERVER-131720 but from a different FCV gated uassert as the root cause.
This is a problem because if the ReshardCollection DDL coordinator fails over, and re-sends `configvsr_reshard_collection`, while an FCV upgrade/downgrade starts. The `configvsr_reshard_collection` will return early with ReshardCollectionInterruptedDueToFCVChange, rather than join on the existing coordinator state machine. This then causes the ReshardCollection DDL coordinator to finish and release its DDL lock early while a resharding coordinator is still running.
- is caused by
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SERVER-127767 Make temporary resharding collection creation authoritative
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- Closed
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- is related to
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SERVER-131720 FCV transition in progress guard prevents configvsr_reshard_collection command from joining existing coordinator state machine
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- Closed
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