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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5913) Allow administrators to be able to start and stop queues
Date Fri, 12 Jun 2009 11:17:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718799#action_12718799

Hemanth Yamijala commented on HADOOP-5913:

I tried to see if this is ready for a commit. But I had a few comments.

- In the commands manual, the documentation of the refreshQueues command seems a little too
terse. We should expand on it a bit more.
- In cluster_setup documentation, it appears that mapred.queue.names property is described
*after* the ACLs. This order should be reversed.
- QueueManager.isRunning() should be synchronized.
- In checkDeprecation, the checks for mapred.queue.names is using a getStrings() with a default
value, which means it will never be null. Hence, it doesn't serve the purpose.
- Methods in Queue don't seem to need to be public.
- Should they also be synchronized ?
- The QueueState enum has a method called 'equalTo'. Why doesn't the idiomatic 'equals' apply
here ?
- QueueManager.getQueueAcls() should be similarly delegated like hasAccess(), no ?

> Allow administrators to be able to start and stop queues 
> ---------------------------------------------------------
>                 Key: HADOOP-5913
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5913
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>            Reporter: rahul k singh
>            Assignee: rahul k singh
>         Attachments: hadoop-5913-1.patch, hadoop-5913-10.patch, hadoop-5913-2.patch,
hadoop-5913-3.patch, hadoop-5913-4.patch, hadoop-5913-5.patch, hadoop-5913-6.patch, hadoop-5913-7.patch,
hadoop-5913-8.patch, hadoop-5913-9.patch
>   This feature would provide functionality to stop and start queues in Hadoop at runtime.

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