queryStats enabled for agg can cause a previously-working query to fail

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Major - P3
    • 8.1.0-rc0
    • Affects Version/s: None
    • Component/s: None
    • Query Integration
    • Fully Compatible
    • ALL
    • v8.0
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      Attached js test file reproduces this issue

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      Attached js test file reproduces this issue
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      Aggregations on sharded clusters that return a result that is just under the 16MB BSONObj limit can succeed with query stats disabled, but fail due to exceeding the limit with query stats enabled. Adding the data-bearing nodes metrics to the response here is what causes the BSON on the shards to exceed the limit.

        1. query_stats_agg_cmd_size_limit.js
          2 kB

            Assignee:
            Alyssa Clark
            Reporter:
            Claudia Cortell (Inactive)
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              Created:
              Updated:
              Resolved: