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https://issues.apache.org/jira/browse/OOZIE-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396450#comment-16396450
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Hadoop QA commented on OOZIE-2644:
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PreCommit-OOZIE-Build started
> Skip queuing Notification Commands when there's nothing to notify
> -----------------------------------------------------------------
>
> Key: OOZIE-2644
> URL: https://issues.apache.org/jira/browse/OOZIE-2644
> Project: Oozie
> Issue Type: Improvement
> Affects Versions: 3.1.3
> Reporter: Robert Kanter
> Assignee: Azrael Seoeun
> Priority: Major
> Fix For: trunk
>
> Attachments: OOZIE-2644.1.patch, OOZIE-2644.2.patch
>
>
> When you use the
> [Workflow|https://oozie.apache.org/docs/4.2.0/WorkflowFunctionalSpec.html#a5_Workflow_Notifications]
> or
> [Coordinator|https://oozie.apache.org/docs/4.2.0/CoordinatorFunctionalSpec.html#a15._Coordinator_Notifications]
> Notification features, Oozie can end up queuing up a lot of
> {{WorkflowNotificationXCommand}} and {{CoordActionNotificationXCommand}}.
> This happens even if there's no notification configured on the job (which I
> imagine is most of the time); in this case, the {{execute}} method simply
> does nothing. This is wasteful and clogs the queue up.
> We should change the code so that it doesn't queue up one of these Commands
> unless there's actually a URL to notify.
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