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  1. Core Server
  2. SERVER-80561

Check perf impact of running in hybrid mode for re-written $group with $count

    • Type: Icon: Task Task
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
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    • Query Integration
    • Fully Compatible

      The re-write of $count is using $size expression that isn't supported in SBE yet, so without special handling the pipeline will end up running in hybrid mode, with the buckets collection access in SBE and the re-written group in classic. We need to check whether this is negatively affecting perf, and if so, keep the whole pipeline in classic.

            Assignee:
            backlog-query-integration Backlog - Query Integration
            Reporter:
            irina.yatsenko@mongodb.com Irina Yatsenko (Inactive)
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