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https://issues.apache.org/jira/browse/HADOOP-4038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur resolved HADOOP-4038.
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Resolution: Won't Fix
Now JT's can persist the state of the job queue and can restart all jobs that
were running at the time when the JT was shutdown. I do not think we need this
JIRA anymore
> Ability for JobTracker to drain running jobs before a shutdown
> --------------------------------------------------------------
>
> Key: HADOOP-4038
> URL: https://issues.apache.org/jira/browse/HADOOP-4038
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: dhruba borthakur
>
> It would be nice to have operating controls on the JobTracker that lets new
> jobs to get rejected while continuing to process existing jobs. This is handy
> while shutting down the JobTracker.
> Similarly, while restarting the JobTracker, it woudl be nice if it can go
> into this state where it refuses to accept new jobs. It allows the system
> administrator to ensure that all relevant TaskTrackers have joined the
> cluster before the cluster is opened for general use.
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