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https://issues.apache.org/jira/browse/HDFS-7604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310052#comment-14310052
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Chris Nauroth commented on HDFS-7604:
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Thank you for taking a look, Xiaoyu. I actually had the same thought as you a
few days ago and updated my code to change the name of the page. I think
changing the name is preferable to displaying all volumes of all nodes. The
existing Datanode Information page already gives us a view of all nodes, and
I'd like to keep the new page focused on just the nodes with problems, so that
an admin can use it as a task list for routine cluster maintenance.
> Track and display failed DataNode storage locations in NameNode.
> ----------------------------------------------------------------
>
> Key: HDFS-7604
> URL: https://issues.apache.org/jira/browse/HDFS-7604
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, namenode
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-7604-screenshot-1.png, HDFS-7604-screenshot-2.png,
> HDFS-7604-screenshot-3.png, HDFS-7604-screenshot-4.png, HDFS-7604.001.patch,
> HDFS-7604.prototype.patch
>
>
> During heartbeats, the DataNode can report a list of its storage locations
> that have been taken out of service due to failure (such as due to a bad disk
> or a permissions problem). The NameNode can track these failed storage
> locations and then report them in JMX and the NameNode web UI.
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