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Type:
Task
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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: None
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None
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Query Optimization
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QO 2024-04-15, QO 2024-04-29
ProjectionStageCovered::transform will always allocate a new BSONObj to put fields in. Investigate whether we can re-use the BSON buffer from the index scan and shuffle around the bytes to avoid this allocation (in SERVER-87103, this accounts for ~50% of allocations in the workload). Since the projection is covering, we know that the BSON not get larger.
- is related to
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SERVER-88437 Use unowned SortedDataInterface API for SBE index scans
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- Closed
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