Details
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Improvement
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Resolution: Done
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Major - P3
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None
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Fully Compatible
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Query 10 (02/22/16)
Description
The index scan stage should track the number of calls to BtreeIndexCursor::skip() made here:
https://github.com/mongodb/mongo/blob/r3.0.0-rc6/src/mongo/db/exec/index_scan.cpp#L438-L439
Original Description
Currently nscanned isn't precise enough to distinguish between unindexed traversal and btree traversal, and in some cases between btree skipping and inorder order btree traversal.
Attachments
Issue Links
- is documented by
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DOCS-7086 Consider documenting "seeks" IXSCAN statistic added to explain
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- Closed
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- is related to
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SERVER-3414 consider using nscannedObjects in addition to nscanned when selecting a query plan
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- Closed
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- related to
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SERVER-10448 Revamp explain() formatting
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- Closed
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