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Type:
Improvement
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Resolution: Unresolved
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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: None
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Query Optimization
In the case when the shard targeting returns an EOF plan then mongos does not need to contact the shards at all. The EOF plans are created if the query itself is trivially false.
- related to
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SERVER-4914 avoid scanning a dummy shard for an unsatisfiable query
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- Closed
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