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https://issues.apache.org/jira/browse/KYLIN-1863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15387589#comment-15387589
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hongbin ma commented on KYLIN-1863:
-----------------------------------
Will it help if we prohibit dropping when there's running/error/pending jobs?
> Discard the Jobs while Droping/Purging the Cube
> -----------------------------------------------
>
> Key: KYLIN-1863
> URL: https://issues.apache.org/jira/browse/KYLIN-1863
> Project: Kylin
> Issue Type: Bug
> Reporter: Richard Calaba
> Fix For: all, v1.5.2, v1.5.2.1
>
>
> I have observed that following scenario on UI leaves uncleaned meta-data in
> Kylin:
> 1) I have an error status job in Monitor for my Cube. I drop the cube from
> UI. I still see the error status jobs in Monitor after Dropping the Cube. If
> I try to Discard the job -> I am getting NPE. Didn't test the same if Purge
> used instead of Drop - but this needs to be checked as well.
> 2) Not 100% sure - but I have a feeling that if I Drop cube from UI before
> Purging it 1st - some job execution metadata (finished build jobs) stay in
> the system ... (intermediate tables/HDFS folders/...). It is hard to find a
> prove now when my system is polluted with old job executions. This could be
> checked while working on 1) above.
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