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https://issues.apache.org/jira/browse/MAPREDUCE-4575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439888#comment-13439888
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Rajiv Chittajallu commented on MAPREDUCE-4575:
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Thank you Arun, finally you are convinced that some sort of decommissioning is
required for JT and TT.
> Add an option to drain the JobTracker jobs for upgrades
> -------------------------------------------------------
>
> Key: MAPREDUCE-4575
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4575
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
>
> Following on from MAPREDUCE-4328 it will be useful to allow an option to
> drain the JobTracker so that it will finish up existing jobs and not accept
> new ones.
> This is particularly useful during upgrades.
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