Jaimin D Jetly created AMBARI-3587:
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Summary: 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: 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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