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https://issues.apache.org/jira/browse/HADOOP-4522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648087#action_12648087
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Matei Zaharia commented on HADOOP-4522:
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That makes sense. Out of curiosity, is there some part of the system other than
the scheduler that needs to look at queues? If not, then maybe those should
also be put into the per-scheduler file. I'm assuming that people won't switch
between schedulers very often and so incompatibilities between these won't be a
problem.
> Capacity Scheduler needs to re-read its configuration
> -----------------------------------------------------
>
> Key: HADOOP-4522
> URL: https://issues.apache.org/jira/browse/HADOOP-4522
> Project: Hadoop Core
> Issue Type: New Feature
> Reporter: Vivek Ratan
>
> An external application (an Ops script, or some CLI-based tool) can change
> the configuration of the Capacity Scheduler (change the capacities of various
> queues, for example) by updating its config file. This application then needs
> to tell the Capacity Scheduler that its config has changed, which causes the
> Scheduler to re-read its configuration. It's possible that the Capacity
> Scheduler may need to interact with external applications in other similar
> ways.
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