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https://issues.apache.org/jira/browse/HDFS-8211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14512036#comment-14512036
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Arpit Agarwal commented on HDFS-8211:
-------------------------------------
I will commit this shortly. I am going to ignore the checkstyle flag pending
the discussion on the dev list.
Also checkstyle has not identified the exact issue and the formatting looks
fine to me from manual inspection.
> DataNode UUID is always null in the JMX counter
> -----------------------------------------------
>
> Key: HDFS-8211
> URL: https://issues.apache.org/jira/browse/HDFS-8211
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: HDFS
> Affects Versions: 2.7.0
> Reporter: Anu Engineer
> Assignee: Anu Engineer
> Priority: Minor
> Attachments: hdfs-8211.001.patch, hdfs-8211.002.patch
>
>
> The DataNode JMX counters are tagged with DataNode UUID, but it always gets a
> null value instead of the UUID.
> {code}
> Hadoop:service=DataNode,name=FSDatasetState*-null*.
> {code}
> This null is supposed be the datanode UUID.
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