Add Multiplanner exit scenario counters to explain

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    • Type: Improvement
    • Resolution: Unresolved
    • Priority: Major - P3
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    • Affects Version/s: None
    • Component/s: None
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    • Query Optimization
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    • 3
    • TBD
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      There are multiple reasons why the multiplanner can exit:

      • One plan hit EOF
      • Filled initial batch
      • Maximum # works hit (by default the larger of 10k or 30% of collection)
      • All plans hit memory limit and query fails

      It would be helpful to track which codepath is hit for investigations of customer issues exposed in explain. SERVER-105490 will handle this for serverStatus() and FTDC.

            Assignee:
            Unassigned
            Reporter:
            Ben Shteinfeld
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              Created:
              Updated: