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Type:
Improvement
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Resolution: Duplicate
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Priority:
Minor - P4
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Affects Version/s: None
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Component/s: Aggregation Framework
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Query
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When performing a pipeline doing a sample then project I noticed it was much slower than doing a project then sample. Could this be optimized? In a similar fashion as to: https://docs.mongodb.com/manual/core/aggregation-pipeline-optimization
For example with the MovieLens dataset ~1million documents:
Pipeline: $sample + $project _id: 76120 ms
Pipeline: $project _id + $sample: 1124 ms
- duplicates
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SERVER-21887 $sample takes disproportionately long time on newly created collection
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- Closed
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- Closed
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- is related to
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- Closed
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