- If the 'lastConsistentCollectionVersion' field of the shard config.collections collection gets updated, a secondary must invalidate the in-memory chunk cache so that it refreshes.
- If an entry in the config.collections collection on a shard gets removed, the in-memory chunk cache must be invalidated so that a refresh is attempted, and nothing found.
- has to be done before
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SERVER-28948 open up secondaries to checking shardVersion
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- Closed
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- is duplicated by
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SERVER-28371 after migration completes, shard donor primary sends oplog message to secondaries to invalidate chunk metadata
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- Closed
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