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https://issues.apache.org/jira/browse/MAPREDUCE-5607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13826951#comment-13826951
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Jason Lowe commented on MAPREDUCE-5607:
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Thanks for the patch, Jon. Comments:
- This patch adds a new JOB_UPDATED_NODES event which is unrelated to the
change in MAPREDUCE-5086. Nothing generates that event.
- In branch-0.23, the number of AM attempts is set cluster-wide and not per-app
as is the case in 2.x. Therefore it's probably not appropriate to add
MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS. Instead we should use
YarnConfiguration.DEFAULT_RM_AM_MAX_RETRIES to match what the rest of the code
is doing in branch-0.23.
> Backport MAPREDUCE-5086 - MR app master deletes staging dir when sent a
> reboot command from the RM
> --------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5607
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5607
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Affects Versions: 0.23.9
> Reporter: Jonathan Eagles
> Assignee: Jonathan Eagles
> Attachments: MAPREDUCE-5607-branch-0.23.patch
>
>
> 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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