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Type:
Improvement
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Resolution: Won't Fix
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: Distributed Query Planning
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None
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Query Optimization
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QE 2023-02-06, QE 2023-02-20, QE 2023-03-06, QE 2023-03-20, QE 2023-04-03
Read concern level "available" is used to find unowned documents in a sharded cluster. Allowing these queries be targeted to a subset of the shards is counterproductive because it means unowned documents within a particular chunk range cannot be easily searched for.
One workaround is to do an aggregation pipeline with {$replaceWith: "$$ROOT"} as it'll prevent the shard targeting optimization.
- is related to
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SERVER-76353 Add the ability to force a query to broadcast to all nodes in a replica set and/or all shards in a cluster
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- Open
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