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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8670) Better to exclude decommissioned nodes for namenode NodeUsage JMX
Date Wed, 29 Jul 2015 12:03:07 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645942#comment-14645942
] 

Hudson commented on HDFS-8670:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #1001 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/1001/])
HDFS-8670. Better to exclude decommissioned nodes for namenode NodeUsage JMX (Contributed
by J.Andreina) (vinayakumarb: rev 6374ee0db445e0a1c3462c19ddee345df740cfb3)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDecommission.java


> 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
>             Fix For: 2.8.0
>
>         Attachments: HDFS-8670.1.patch, HDFS-8670.2.patch, HDFS-8670.3.patch, HDFS-8670.4.patch,
HDFS-8670.5.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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