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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12985) Support MetricsSource interface for DecayRpcScheduler Metrics
Date Thu, 21 Apr 2016 04:04:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15251212#comment-15251212
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Jitendra Nath Pandey commented on HADOOP-12985:
-----------------------------------------------

Minor : TopN import is not needed in {{RollingWindowManager}}
+1 with the above fix.

> Support MetricsSource interface for DecayRpcScheduler Metrics
> -------------------------------------------------------------
>
>                 Key: HADOOP-12985
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12985
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>         Attachments: HADOOP-12985.00.patch, HADOOP-12985.02.patch, HADOOP-12985.03.patch,
HADOOP-12985.04.patch, HADOOP-12985.05.patch, HADOOP-12985.06.patch
>
>
> This allows metrics collector such as AMS to collect it with MetricsSink. The per user
RPC call counts, schedule decisions and per priority response time will be useful to detect
and trouble shoot Hadoop RPC server such as Namenode overload issues. 



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