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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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Release Note: Extended the framework's refresh-queue mechanism to support
refresh of scheduler specific queue properties and implemented this refresh
operation for some of the capacity scheduler properties. With this feature, one
can refresh some of the capacity-scheduler's queue related properties - queue
capacities, user-limits per queue, max map/reduce capacity and max-jobs per
user to initialize while the system is running and without restarting JT. Even
after this, some features like changing enable/disable priorities,
adding/removing queues are not supported in capacity-scheduler. (was: Extended
the framework to refresh queue properties to support refresh of scheduler
properties.
Implemented the refresh operation for capacity scheduler properties like queue
capacities.)
> 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
> Fix For: 0.21.0
>
> Attachments: MAPREDUCE-893-20090915.1.txt,
> MAPREDUCE-893-20090917.2.txt, MAPREDUCE-893-20090917.4.txt,
> MAPREDUCE-893-20090918.2.txt, MAPREDUCE-893-20090918.over.849.patch,
> MAPREDUCE-893-20090918.txt, MAPREDUCE-893-7.patch
>
>
> 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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