Details
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Bug
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Status: Closed
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Major - P3
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Resolution: Fixed
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3.4.0
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None
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Fully Compatible
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ALL
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Query 2017-01-23
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0
Description
Maintaining the reference can lead to unnecessary cloning of data when the underlying source is destructive, as is the case for DocumentSourceUnwind. This leads to a 15% performance degradation in the mongoperf Unwind test.
Attachments
Issue Links
- is related to
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SERVER-27444 Add unit tests confirming $unwind followed by streaming stage does not clone DocumentStorage
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- Backlog
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