Details
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New Feature
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Resolution: Duplicate
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Minor - P4
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None
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None
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None
Description
MapReduce would be more useful if it supports many collections as data source instead of just one. This feature would turn MongoDB into a full replacement for Hadoop in sharded environments, and will add capabilities to process largest amount of data.
I think it would be even more useful if MapReduce can process collections from different databases as well, because the number of collections in a databases is limited by default.
Attachments
Issue Links
- duplicates
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SERVER-19095 $lookup
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- Closed
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