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https://issues.apache.org/jira/browse/OOZIE-2110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14276272#comment-14276272
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Rohini Palaniswamy commented on OOZIE-2110:
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You will have to add mapreduce.job.complete.cancel.delegation.tokens=false to
child jobs(action xml).
> cancel delegation token of launcher jobs that stay till child jobs finish
> -------------------------------------------------------------------------
>
> Key: OOZIE-2110
> URL: https://issues.apache.org/jira/browse/OOZIE-2110
> Project: Oozie
> Issue Type: Bug
> Affects Versions: trunk
> Reporter: Ryota Egashira
> Assignee: Ryota Egashira
> Fix For: trunk
>
> Attachments: OOZIE-2110.patch
>
>
> set mapreduce.job.complete.cancel.delegation.tokens=true for launcher job
> that wait for child jobs to finish (most of actions, pig,hive,java, distcp,
> etc). this is currently set to false.
> keep mapreduce.job.complete.cancel.delegation.tokens=false for launcher job
> that exits right after a child job launched (mapred action), such that it
> does not delete delegation token while child job still running.
> this change reduce the load on Namenode in terms of the number of tokens it
> has to maintain.
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