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https://issues.apache.org/jira/browse/HDFS-11560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15951263#comment-15951263
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Arpit Agarwal commented on HDFS-11560:
--------------------------------------
The patch lgtm. One comment on the unit test.
In testNameNodeMXBeanSlowDisksEnabled, we should be querying the NN jmx.
{code}
ObjectName mxbeanName = new ObjectName(
"Hadoop:service=DataNode,name=DataNodeInfo");
{code}
> Expose slow disks via NameNode JMX
> ----------------------------------
>
> Key: HDFS-11560
> URL: https://issues.apache.org/jira/browse/HDFS-11560
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Attachments: HDFS-11560.001.patch
>
>
> Each Datanode exposes its slow disks through Datanode JMX. We can expose the
> overall slow disks (among all datanodes) via the NameNode JMX.
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