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https://issues.apache.org/jira/browse/YARN-472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13603836#comment-13603836
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jian he commented on YARN-472:
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The approach used is to add a separate JobStateInternal.REBOOT to distinguish
from the JobStateInternal.ERROR, such that, when the job is shutdown it will
not delete the staging dir if its on JobStateInternal.REBOOT & its not the last
retry
> MR app master deletes staging dir when sent a reboot command from the RM
> ------------------------------------------------------------------------
>
> Key: YARN-472
> URL: https://issues.apache.org/jira/browse/YARN-472
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: jian he
> Assignee: jian he
>
> If the RM is restarted when the MR job is running, then it sends a reboot
> command to the job. The job ends up deleting the staging dir and that causes
> the next attempt to fail.
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