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https://issues.apache.org/jira/browse/HDFS-8211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anu Engineer updated HDFS-8211:
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Attachment: hdfs-8211.002.patch
* Make sure that tests works with new code and fails with older code
* Converted {code}checkDatanodeUuid{code} to package-local scope
* Simplified tests using call into {code}checkDatanodeUuid{code}
> 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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