DocumentSourceLookup::getOutputSorts() does not correctly compute sort.

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    • Type: Bug
    • Resolution: Done
    • Priority: Major - P3
    • 3.3.8
    • Affects Version/s: None
    • Component/s: Aggregation Framework
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    • Fully Compatible
    • ALL
    • Query 15 (06/03/16)
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    • 3
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      In DocumentSourceLookup::getOutputSorts(), we truncate an input sort if a sort key matches our 'as' field exactly, as seen here. However, this is not correct – we should truncate each sort at either the 'as' key, or at any path prefix of the 'as' key. expression::isPathPrefixOf can be used to determine whether this is true.

      In addition, document_source_test.cpp should be updated to include tests for this behavior. As part of this work, the two namespaces for DocumentSourceLookup in document_source_test.cpp should be combined into one.

              Assignee:
              David Storch
              Reporter:
              Benjamin Murphy (Inactive)
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                Created:
                Updated:
                Resolved: