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https://issues.apache.org/jira/browse/MAPREDUCE-893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod K V updated MAPREDUCE-893:
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Attachment: MAPREDUCE-893-20090915.1.txt
Uploading first patch for review.
- This defines TaskScheduler.QueueRefresher which scheduler should override so
as to support refresh of the queues.
- QueueManager's refresh code is modified so as to also includes refresh of
queues by the schedulers.
- Implemented TaskScheduler.QueueRefresher in CapacityTaskScheduler so as to
support queue-refresh in this scheduler.
- Added some basic tests w.r.t verifying capacities and user-limits' refresh.
This needs some more tests to handle failures during refresh. Uploading patch
so as to get the first refresh started.
> Provide an ability to refresh queue configuration without restart.
> ------------------------------------------------------------------
>
> Key: MAPREDUCE-893
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-893
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker
> Reporter: Hemanth Yamijala
> Assignee: Vinod K V
> Attachments: MAPREDUCE-893-20090915.1.txt
>
>
> While administering a cluster using multiple queues, administrators feel a
> need to refresh queue properties on the fly without needing to restart the
> JobTracker. This is partially supported for some properties such as queue
> ACLs (HADOOP-5396) and state (HADOOP-5913). The idea is to extend the
> facility to refresh other queue properties as well, including scheduler
> properties.
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