Investigate changes in SERVER-135111: Enable queryStats top-k optimization by default

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    • Type: Investigation
    • Resolution: Won't Fix
    • Priority: Major - P3
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    • Affects Version/s: None
    • Component/s: None
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      Original Downstream Change Summary

      This ticket adds a new field in the explain output for some $queryStats pipelines. If users run explain on the pipeline: [{$queryStats:{}}, {$sort:...}, {$limit:...}] or [{$queryStats:{}}, {$project:}, {$sort:...}, {$limit:...}] the following new object will appear in the explain output of the $queryStats stage:

      "$queryStats" : {
      "topKSortOptimization" :

      { "path" : <sort path> "limit" : <number>, "isAscending" : <boolean> }

      Description of Linked Ticket

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            Unassigned
            Reporter:
            Backlog - Core Eng Program Management Team
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