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From "Tanping Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2203) Add additional fields to the JMX output on NameNode
Date Sat, 30 Jul 2011 00:17:09 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tanping Wang updated HDFS-2203:
-------------------------------

    Attachment: HDFS-2203.patch

Added more metrics for each live datanode into the bean named,
"Hadoop:service=NameNode,name=NameNodeInfo".
Here is an example of the returned JMX jason string,

{noformat}
"LiveNodes" : "{\"gsbl90593.blue.ygrid.yahoo.com\":{\"bpUsed(GB)\":\"0.01\",\"remainigPercentage\":\"98.89\",\"lastContact\":0,\"volumeFailures\":0,\"bpUsedPercentage\":\"0\",\"nonDFSUsed(GB)\":\"9.94\",\"usedPercentage\":\"0\",\"blocks\":11593,\"usedSpace(GB)\":\"0.01\",\"remaining(GB)\":\"884.65\",\"adminState\":\"In
Service\",\"capacity(GB)\":\"894.59\"},\"gsbl90594.blue.ygrid.yahoo.com\":{\"bpUsed(GB)\":\"0.01\",\"remainigPercentage\":\"98.84\",\"lastContact\":0,\"volumeFailures\":0,\"bpUsedPercentage\":\"0\",\"nonDFSUsed(GB)\":\"10.38\",\"usedPercentage\":\"0\",\"blocks\":11627,\"usedSpace(GB)\":\"0.01\",\"remaining(GB)\":\"884.2\",\"adminState\":\"In
Service\",\"capacity(GB)\":\"894.59\"}}",
{noformat}

> 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: name-node
>    Affects Versions: 0.20.204.0, 0.20.205.0, 0.23.0
>            Reporter: Charles Wimmer
>            Assignee: Tanping Wang
>            Priority: Minor
>              Labels: newbie
>         Attachments: 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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