Vihang Karajgaonkar created IMPALA-8278:
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Summary: Fix testEventProcessorFetchAfterHMSRestart
Key: IMPALA-8278
URL: https://issues.apache.org/jira/browse/IMPALA-8278
Project: IMPALA
Issue Type: Sub-task
Reporter: Vihang Karajgaonkar
Assignee: Vihang Karajgaonkar
{{testEventProcessorFetchAfterHMSRestart}} test case in
{{MetastoreEventsProcessorTest}} causes flakiness because it creates a new
event processor pointing to the same the catalog instance. This means that all
the events generated are now being processed by two events processor instances
and they both try to modify the state of catalogd causing race conditions. The
failures vary and depend a lot on the timing. I see the following exception
which is related to this issue.
Easiest way to figure out if this is a problem is to look into FeSupport logs
of the test to confirm if a event ID is being processed twice (i.e you see to
exactly similar logs for a given event id).
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