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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2.1.1
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None
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None
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OSX 10.6, Java, mongodb is built from Dec. 15 master branch.
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OS X
Description
Overall new aggregation framework is faster than map-reduce in our application. But when I tried to further improve the performance by sending multiple aggregation commands in multiple threads, then get the final aggregation done in app space, I noticed each thread will load lot of data to memory which makes each command take minutes to finish. (I do have index on sort key)
Attachments
Issue Links
- depends on
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SERVER-3832 aggregation: early $sort should be optimized to use an index if possible
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- Closed
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- is depended on by
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SERVER-4507 aggregation: optimize $group to take advantage of sorted sequences
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- Backlog
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