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https://issues.apache.org/jira/browse/HADOOP-15194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tao Jie updated HADOOP-15194:
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Affects Version/s: 2.8.2
> Some properties for FairCallQueue should be reloadable
> ------------------------------------------------------
>
> Key: HADOOP-15194
> URL: https://issues.apache.org/jira/browse/HADOOP-15194
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.8.2
> Reporter: Tao Jie
> Priority: Major
>
> When trying to make use of FairCallQueue for a large cluster, it is not easy
> to set the properties appropriately at the first time. User may adjust those
> properties frequently and restarting the namenode costs a lot for a large
> multi-user hadoop clluster. We should support to reload some of those
> properties in configuration without restarting.
> Related properties:
> ipc.8020.faircallqueue.multiplexer.weights
> ipc.8020.faircallqueue.decay-scheduler.thresholds
> ipc.8020.decay-scheduler.backoff.responsetime.thresholds
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