Investigate why the optimizer fallback mechanism is triggered for simple queries

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    • Type: Bug
    • Resolution: Won't Do
    • Priority: Major - P3
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    • Affects Version/s: None
    • Component/s: None
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    • Query Optimization
    • ALL
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      When we run the server with internalQueryFrameworkControl="tryBonsai" some simple queries, such as 

      {$match: {'a.b': null}}

      trigger the optimizer fallback mechanism and produce the classic plan. 

      To reproduce

      buildscripts/resmoke.py run --suite=query_golden_cqf --mongodSetParameters="{internalQueryFrameworkControl: 'tryBonsai'}" jstests/query_golden/null_missing.js

            Assignee:
            [DO NOT USE] Backlog - Query Optimization
            Reporter:
            Milena Ivanova
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              Created:
              Updated:
              Resolved: