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Type:
Task
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Resolution: Unresolved
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Priority:
Major - P3
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Affects Version/s: 8.3.0-rc0
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Component/s: None
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Catalog and Routing
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CAR Team 2025-10-27
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🟩 Routing and Topology
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In SERVER-102965, we implemented replication of Operation FCV (OFCV) in the oplog through the versionContext field.
This could be done unconditionally since we OFCV was only used by ShardingDDLCoordinators started in ServerFCV≥8.2, and we drained those at the end of the upgrade/downgrade.
In SERVER-111448 we will add a RAII helper that allows shard-local operations to acquire an OFCV even in ServerFCV=8.0. This OFCV it is only an in-memory state and can not be replicated (since 8.0 binaries do not understand this field), so we need to gate replication to the oplog behind a feature flag.
- is depended on by
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SERVER-111448 Create RAII helper to acquire Operation FCV for OperationContext
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- Open
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- is related to
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SERVER-111443 Allow tagging Operation FCV to be propagated or not across shards
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- In Code Review
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SERVER-102965 Replicate the Operation FCV in the oplog
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- Closed
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