Vihang Karajgaonkar created IMPALA-8847:
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Summary: Add partition events may contain empty partition object
list
Key: IMPALA-8847
URL: https://issues.apache.org/jira/browse/IMPALA-8847
Project: IMPALA
Issue Type: Bug
Reporter: Vihang Karajgaonkar
Assignee: Vihang Karajgaonkar
When event polling is ON and when an external application like Hive issues a
{{alter table <table> add if not exists partition (<partspec>)}} it is possble
that command did not add a partition since it is preexisting. However,
metastore still generates a ADD_PARTITION event in such a case with empty list
of added partitions. Such events cause a Precondition to fail while processing
on the EventsProcessor side and event polling goes into error state.
The fix would be simple. Ignore such events.
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