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https://issues.apache.org/jira/browse/HDFS-7604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth updated HDFS-7604:
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Attachment: HDFS-7604.prototype.patch
HDFS-7604-screenshot-1.png
The attached screenshot shows the proposed appearance in the NameNode web UI.
The "Failed Volumes" counter column has been replaced with "Failed Storage
Locations", which shows a list of each actual location that has failed. We'll
still need to retain the old counter for backwards compatibility in the JMX
metrics, but I chose to remove it from the web UI display.
I'm also attaching a first cut prototype patch. I'm not going to click Submit
Patch yet, because I still need to write new tests for this.
> 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.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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