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https://issues.apache.org/jira/browse/HDFS-4860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13672751#comment-13672751
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Konstantin Boudnik commented on HDFS-4860:
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Patch looks overly good to me. A real small thing: consider adding a message to
the assertions in the test, so it is more apparent why it fails (if it does).
> Add additional attributes to JMX beans
> --------------------------------------
>
> Key: HDFS-4860
> URL: https://issues.apache.org/jira/browse/HDFS-4860
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 0.20.204.1, 3.0.0, 2.1.0-beta, 2.0.4-alpha
> Reporter: Trevor Lorimer
> Attachments: 0001-HDFS-4860.patch
>
>
> Currently the JMX bean returns much of the data contained on the HDFS Health
> webpage (dfsHealth.html). However there are several other attributes that are
> required to be added.
> I intend to add the following items to the appropriate bean in parenthesis :
> Started time (NameNodeInfo),
> Compiled info (NameNodeInfo),
> Jvm MaxHeap, MaxNonHeap (JvmMetrics)
> Node Usage stats (i.e. Min, Median, Max, stdev) (NameNodeInfo),
> Count of decommissioned Live and Dead nodes (FSNamesystemState),
> Journal Status (NodeNameInfo)
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