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https://issues.apache.org/jira/browse/OOZIE-1118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13611099#comment-13611099
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Virag Kothari commented on OOZIE-1118:
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bq.  I guess we shouldn't purge until both the parent and all children (and 
their children etc) are ready to be purged

That seems a safe approach. In that case, is the purge service mandating that 
the parent cannot be configured to be purged sooner than the children?
                
> improve logic of purge service
> ------------------------------
>
>                 Key: OOZIE-1118
>                 URL: https://issues.apache.org/jira/browse/OOZIE-1118
>             Project: Oozie
>          Issue Type: Improvement
>          Components: bundle, coordinator, workflow
>    Affects Versions: 3.3.0
>            Reporter: Alejandro Abdelnur
>            Assignee: Robert Kanter
>             Fix For: trunk
>
>         Attachments: OOZIE-1118.patch, OOZIE-1118.patch, OOZIE-1118.patch, 
> OOZIE-1118.patch, OOZIE-1118.patch, OOZIE-1118.patch, OOZIE-1118.patch
>
>
> The current logic of the purge service is flat. I.e., WF purging only takes 
> into account WF end time, it does not take into account that the WF was 
> started by a COORD job. This means that completed WFs of a running COORD job 
> could be purge if the COORD job runs for longer that the purge age.
> One way of addressing this would be:
> * WF purging only purges WF jobs started directly by a client call.
> * COORD purging purges COORD jobs started directly by a client call. It also 
> purges the WF jobs created by the COORD jobs being purged.
> * BUNDLE purging purges BUNDLE jobs, and the corresponding COORD jobs and WF 
> jobs.
> This could be handled by a new property in the job beans 'job-owner'. Set to 
> 'self' it would mean it can be purged by the same job type purger. If set to 
> other value, then it is a higher level purger the one responsible for purging 
> it.
> This means that for a WF job started by COORD job started by a BUNDLE job, 
> the WF job and the COORD job would have the BUNDLE job as owner, while the 
> BUNDLE with have 'self' as owner.
> This ownership propagation would also have
> A caveat here would be how to handle sub-workflows. 
> I guess we should check if the wf was created from  coord, and if then let 
> the coord purge take care of that, meaning wf purge does not purge wf started 
> by coords.
> Similarly, the same should also apply for sub-WFs.

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