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https://issues.apache.org/jira/browse/HELIX-589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14396380#comment-14396380
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ASF GitHub Bot commented on HELIX-589:
--------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/helix/pull/22
> Delete job API throws NPE if the job does not exist in last scheduled workflow
> ------------------------------------------------------------------------------
>
> Key: HELIX-589
> URL: https://issues.apache.org/jira/browse/HELIX-589
> Project: Apache Helix
> Issue Type: Bug
> Reporter: Karthiek
>
> When trying to delete a job from a recurrent job queue, Helix throws NPE if
> the job does not exist in last scheduled workflow.
> java.lang.IllegalArgumentException: Could not remove job BackupJob_MailboxDB
> from DAG of queue BackupJobQueue_ESPRESSO_CHO_1_SCHEDULED_0
> at
> org.apache.helix.task.TaskDriver.removeJobFromDag(TaskDriver.java:411)
> at
> org.apache.helix.task.TaskDriver.deleteJobFromScheduledQueue(TaskDriver.java:345)
> at org.apache.helix.task.TaskDriver.deleteJob(TaskDriver.java:303)
> It is possible for a user to add and immediately delete the job before the
> next workflow is scheduled. Helix should accommodate this case and check if
> the job exists in last scheduled workflow before trying to delete it.
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