Count $limit exemptions in maxEstimatedScanBytes metrics

    • Type: Task
    • Resolution: Unresolved
    • Priority: Minor - P4
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    • Query Execution
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      When maxEstimatedScanBytes is enabled, the server rejects queries whose plans require an unbounded COLLSCAN on collections whose logical data size exceeds the configured threshold.

      A query can avoid rejection in two ways:

      • An effective positive $limit bounds the collection scan.
      • A $natural hint explicitly overrides the rejection.

      Currently, metrics.query.maxEstimatedScanBytes.rejectedAndOverridden records $natural overrides but does not record queries allowed because of an effective $limit.

      Update the metrics so that $limit-based exemptions are accounted for. If rejectedAndOverridden is intended to remain specific to $natural hints This can be rejected.

            Assignee:
            Unassigned
            Reporter:
            Guilherme Wahlbrink
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              Created:
              Updated: