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https://issues.apache.org/jira/browse/AMBARI-3587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13804762#comment-13804762
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Srimanth Gunturi commented on AMBARI-3587:
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+1 for patch.
> Reassign Master (non-secure): JobTracker reassignment does not need manual
> step.
> --------------------------------------------------------------------------------
>
> Key: AMBARI-3587
> URL: https://issues.apache.org/jira/browse/AMBARI-3587
> Project: Ambari
> Issue Type: Task
> Components: client
> Affects Versions: 1.4.2
> Reporter: Jaimin D Jetly
> Assignee: Jaimin D Jetly
> Fix For: 1.4.2
>
> Attachments: AMBARI-3587.patch, Reassign master JobTracker.png
>
>
> On manual step for JobTracker reassignment (non-secure cluster), We ask for
> copying content of directories listed in _mapred.local.dir_ property of
> mapred-site.xml to newly assigned JobTracker host. Apart from sub-directory
> _jobTracker_ inside the directory path stated by _mapred.local.dir_ property
> , all other sub-directories are used by TaskTracker and are never accessed
> by JobTracker.
> JobTracker creates job configuration xml file and it's CRC file for a running
> job inside <mapred.local.dir value>/jobTracker directory. These are
> *temporary files* which are created when job starts and deleted after the job
> is completed.
> I was able to successfully reassign JobTracker without executing manual step
> in the wizard. Smoke test for all services passed successfully on the last
> step of the wizard.
> *As a resolution to this ticket, We need to remove Manual commands step
> (Reassign master JobTracker.png) from JobTracker reassignment wizard in
> non-secure setup.*
> Note: JobTracker Log directories are useful source of information that a user
> might want to copy to the target host but it's not a mandatory step and can
> be a part of ambari docs.
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