Michael Ho created IMPALA-7829:
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Summary: Send the final profile only after all fragment instances
have been closed
Key: IMPALA-7829
URL: https://issues.apache.org/jira/browse/IMPALA-7829
Project: IMPALA
Issue Type: Bug
Components: Distributed Exec
Affects Versions: Impala 3.2.0
Reporter: Michael Ho
Assignee: Michael Ho
As shown in IMPALA-7828. there is some non-determinism on whether the errors
detected in {{FragmentInstanceState::Close()}} will show up in the final
profile sent to the coordinator. The reason is that the current code marks a
fragment instance "done" after {{ExecInternal()}} completes but before
{{Close()}} is called. There is a window in between when the final status
report may be sent before {{Close()}} finishes. We should consider not sending
the final report until {{Close()}} is done but we probably need to understand
whether it has any implication to the overall reported query execution time. It
should have no effect to the "First Rows Available" time for a query.
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