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From "rahul k singh (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-861) Modify queue configuration format and parsing to support a hierarchy of queues.
Date Mon, 24 Aug 2009 05:58:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12746739#action_12746739
] 

rahul k singh commented on MAPREDUCE-861:
-----------------------------------------

the name of getQueues method in QueueManager would be changed to getLeafQueues.

>From the code point of view we see following places where things would be impacted.

1. DynamicPriorityScheduler.java line : 80 ., line : 240
2. JobTracker.java line : 3310
3. TestQueueManager line: 56
4. CapacityTaskScheduler line: 1045 , line: 1102


Ill go ahead and  change the call  to getQueues to  getLeafQueues. The getLeafQueues would
return list of queues to which job can be submitted.

P.S: For the first cut we are not allowing to submit the job at higher level queues. they
are just the logical grouping of the leaf level queues.


> Modify queue configuration format and parsing to support a hierarchy of queues.
> -------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-861
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-861
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>            Reporter: Hemanth Yamijala
>            Assignee: rahul k singh
>
> MAPREDUCE-853 proposes to introduce a hierarchy of queues into the Map/Reduce framework.
This JIRA is for defining changes to the configuration related to queues. 
> The current format for defining a queue and its properties is as follows: mapred.queue.<queue-name>.<property-name>.
For e.g. mapred.queue.<queue-name>.acl-submit-job. The reason for using this verbose
format was to be able to reuse the Configuration parser in Hadoop. However, administrators
currently using the queue configuration have already indicated a very strong desire for a
more manageable format. Since, this becomes more unwieldy with hierarchical queues, the time
may be good to introduce a new format for representing queue configuration.

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