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Posted to issues-all@impala.apache.org by "Vihang Karajgaonkar (JIRA)" <ji...@apache.org> on 2019/08/12 18:13:00 UTC
[jira] [Commented] (IMPALA-8847) Add partition events may contain
empty partition object list
[ https://issues.apache.org/jira/browse/IMPALA-8847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905448#comment-16905448 ]
Vihang Karajgaonkar commented on IMPALA-8847:
---------------------------------------------
I created a HIVE jira since I believe this behavior is inconsistent and misleading from HMS. HMS should not generate such events in the first place.
> 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
> Priority: Major
>
> 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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