[jira] [Resolved] (IMPALA-8847) Add partition events may contain empty partition object list

["Vihang Karajgaonkar (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-8847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vihang Karajgaonkar resolved IMPALA-8847.
-----------------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.3.0

> 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
>             Fix For: Impala 3.3.0
>
>
> 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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