Thomas Tauber-Marshall created IMPALA-5783:

             Summary: Investigate exec summary behavior
                 Key: IMPALA-5783
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
    Affects Versions: Impala 2.10.0
            Reporter: Thomas Tauber-Marshall

A recent investigation into a flaky test, IMPALA-5708, brought up the issue 
that the exec summary may not always be filled in for certain queries, even if 
the query is FINISHED.

For example, a query with a limit or subquery that internally cancels some 
fragments because they are no longer needed may never update the exec summary 
with info from those fragments.

We should investigate what guarantees we can make about when the exec summary 
will be present and add automated tests to check these guarantees.

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