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https://issues.apache.org/jira/browse/HDFS-7604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310030#comment-14310030
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Xiaoyu Yao commented on HDFS-7604:
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Thanks [~cnauroth] for working on this, which will be very useful for admin.
The changes looks good to me with one comment about the UI:
The title of the new page "Datanode Volumes" is a little bit confusing as it
only shows failed volumes. A more accurate title could be "Failed Datanode
Volumes". An alternative is to keep the "Datanode Volumes" as title but
display all the volumes with their status in a dedicate column (e.g., RED for
failed ones and Green for healthy ones). This way, admin can have a complete
view of all the volumes and their status of the cluster. However, display all
the volumes in a large cluster with thousands of nodes/volumes could be slow.
UI should give the option to filter what to display, e.g. only failed volumes
or all volumes.
> 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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