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Posted to hdfs-issues@hadoop.apache.org by "J.Andreina (JIRA)" <ji...@apache.org> on 2015/06/26 08:53:04 UTC

[jira] [Commented] (HDFS-8670) Better to exclude decommissioned nodes for namenode NodeUsage JMX

    [ https://issues.apache.org/jira/browse/HDFS-8670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14602486#comment-14602486 ] 

J.Andreina commented on HDFS-8670:
----------------------------------

I would like to work on this issue. 
[~mingma], please reassign to you , if you have already started working on this.

> 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
>
> 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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