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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-853) Support a hierarchy of queues in the Map/Reduce framework
Date Thu, 13 Aug 2009 04:41:14 GMT
Support a hierarchy of queues in the Map/Reduce framework
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                 Key: MAPREDUCE-853
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-853
             Project: Hadoop Map/Reduce
          Issue Type: New Feature
          Components: jobtracker
            Reporter: Hemanth Yamijala
             Fix For: 0.21.0


In MAPREDUCE-824, we proposed introducing a hierarchy of queues in the capacity scheduler.
Currently, the M/R framework provides the notion of job queues and handles some functionality
related to queues in a scheduler-agnostic manner. This functionality includes:
- Managing the list of ACLs for queues
- Managing the run state of queues - running or stopped
- Displaying scheduling information about queues in the jobtracker web UI and job client CLI
- Displaying list of jobs in a queue in the jobtracker web UI and job client CLI
- Providing APIs for list queues and queue information in JobClient.

Since it would be beneficial to extend this functionality to hierarchical queues, this JIRA
is proposing introducing the concept into the map/reduce framework as well. We could treat
this as an umbrella JIRA and file additional tasks for each of the changes involved, sticking
to the high level approach in this JIRA.

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