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Type:
Improvement
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Resolution: Done
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Priority:
Major - P3
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None
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Affects Version/s: 7.1.0
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Component/s: None
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Labels:None
MongoDB allows customers to store javascript functions on the server in a system collection called system.js.
The functions customer stored within the system.js collection could be used within aggregations and queries such as mapReduce and $where respectively.
Starting in MongoDB 5.0 mapReduce is deprecated in favor of an aggregation pipeline and for $where alternatives such as $expr are preferred due to better performance.
System.js should be deprecated as the native built-in capabilities of the aggregation framework have increased and $function exists if custom expressions are needed.
- is depended on by
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SERVER-82802 Enable system.js functionality when collection lives outside DBPrimary
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- Closed
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- is documented by
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- Ready for Work
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- related to
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SERVER-64476 system.js fails to work seamlessly in sharded collections
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- Closed
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