Changing priority of a job should be available in CLI and available on the web
UI only along with the Kill Job actions
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Key: HADOOP-4124
URL: https://issues.apache.org/jira/browse/HADOOP-4124
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Hemanth Yamijala
Assignee: Hemanth Yamijala
Fix For: 0.19.0
Currently, a job's priority can only be changed from the job tracker web UI.
However, it is really similar (if not as destructive) as killing a job, in the
sense that is should not be exposed publicly. The use case for this kind of
restriction is where Hadoop is shared in production environments by different
users, and they should not be allowed to change another user's priority. At the
same time, it should be possible to still change a job's priority in some
manner, if a user is authorized to do so, and the CLI can provide a way to do
this, along with mechanisms introduced for ACLs in HADOOP-3698.
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