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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4124) Changing priority of a job should be available in CLI and available on the web UI only along with the Kill Job actions
Date Fri, 19 Sep 2008 11:18:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12632634#action_12632634
] 

Hemanth Yamijala commented on HADOOP-4124:
------------------------------------------

Ran core tests and contrib tests on my machine.

Contrib tests all passed.

Following core tests failed:

org.apache.hadoop.hdfs.server.datanode.TestBlockReplacement: This test timed out. There is
no relation to this test in the patch.
Running org.apache.hadoop.mapred.TestLimitTasksPerJobTaskScheduler: Same as HADOOP-4213.

> Changing priority of a job should be available in CLI and available on the web UI only
along with the Kill Job actions
> ----------------------------------------------------------------------------------------------------------------------
>
>                 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
>
>         Attachments: HADOOP-4124.patch, HADOOP-4124.patch, HADOOP-4124.patch, HADOOP-4124.patch
>
>
> 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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