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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2203) Add additional fields to the JMX output on NameNode
Date Sat, 09 May 2015 06:02:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14536239#comment-14536239

Haohui Mai commented on HDFS-2203:

I believe that percentage should be calculated on the client side instead -- the client has
more information to determine about format, precisions, etc. Note that the NN Web UI has taken
this approach and worked reliably.

Given that any fields added in the JMX output have compatibility concerns, and most of the
proposed information is available through JMX today, I'm closing this one as won't fix.

> Add additional fields to the JMX output on NameNode
> ---------------------------------------------------
>                 Key: HDFS-2203
>                 URL: https://issues.apache.org/jira/browse/HDFS-2203
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions:,, 0.23.0
>            Reporter: Charles Wimmer
>            Assignee: Tanping Wang
>            Priority: Minor
>              Labels: BB2015-05-RFC, newbie
>         Attachments: HDFS-2203-2.patch, HDFS-2203.patch
> When accessing the JMX data via http (http://namenode:50070/jmx) there are a couple of
useful fields missing from this bean:
> "name" : "Hadoop:service=NameNode,name=NameNodeInfo",
> "modelerType" : "org.apache.hadoop.hdfs.server.namenode.FSNamesystem",
> Please add the number of blocks and the configured capacity. 

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