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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: 3.6.0, 4.0.0
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Component/s: Aggregation Framework
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Labels:None
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Fully Compatible
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ALL
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v4.0, v3.6
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Query 2019-02-11
It looks like $lookup's implementation of addInvolvedCollections is incorrect. It neglects to include any namespaces that are referenced in a subpipline, should one exist.
It looks like this method is only used to check that all involved views are using the same collation, so the impact of this bad implementation would be a failure to detect mixed collations within a $lookup subpipeline.
- is depended on by
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SERVER-38360 Disallow pipelines which read from the same namespace that they write to
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- Closed
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