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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-860) Modify Queue APIs to support a hierarchy of queues
Date Fri, 14 Aug 2009 07:45:15 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743120#action_12743120
] 

Hemanth Yamijala commented on MAPREDUCE-860:
--------------------------------------------

As discussed in MAPREDUCE-853, we will need to consider the APIs in JobClient which are public,
JobSubmissionProtocol and the QueueManager class. First, lets consider JobClient.

The following three APIs exist in JobClient:

{code}
// Gets all the jobs which were added to particular Job Queue
JobStatus[] getJobsFromQueue(String queueName);
// Gets the queue information associated to a particular Job Queue, particularly scheduling
information as a string.
JobQueueInfo getQueueInfo(String queueName);
// Return an array of queue information objects about all the Job Queues configured.
JobQueueInfo[] getQueues();
{code}

The JobQueueInfo class described above is defined as follows:

{code}
public class JobQueueInfo {
  private String queueName;
  private String schedulingInfo;
}
{code}

with appropriate getters and setters.

> Modify Queue APIs to support a hierarchy of queues
> --------------------------------------------------
>
>                 Key: MAPREDUCE-860
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-860
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: jobtracker
>            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 APIs related to queues.

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