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From "J.Andreina (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8670) Better to exclude decommissioned nodes for namenode NodeUsage JMX
Date Wed, 29 Jul 2015 04:19:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

J.Andreina updated HDFS-8670:
    Attachment: HDFS-8670.5.patch

Thanks [~vinayrpet] for the review comments.
 I have updated the patch .Sorry for the delay. Please review. 

> Better to exclude decommissioned nodes for namenode NodeUsage JMX
> -----------------------------------------------------------------
>                 Key: HDFS-8670
>                 URL: https://issues.apache.org/jira/browse/HDFS-8670
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Ming Ma
>            Assignee: J.Andreina
>         Attachments: HDFS-8670.1.patch, HDFS-8670.2.patch, HDFS-8670.3.patch, HDFS-8670.4.patch,
> The namenode NodeUsage JMX has Max, Median, Min and Standard Deviation of DataNodes usage,
it currently includes decommissioned nodes for the calculation. However, given balancer doesn't
work on decommissioned nodes and sometimes we could have nodes stay in decommissioned states
for a long time; it might be better to exclude decommissioned nodes for the metrics calculation.

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