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https://issues.apache.org/jira/browse/YARN-90?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13781905#comment-13781905
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Ravi Prakash commented on YARN-90:
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Hi nijel!
For testing I would like to configure a USB drive to be one of the local + log
dirs. We can then simulate failure by unplugging the USB drive. When we plug it
back in, the NM should start using the "recovered" disk. Did you experience
this behaviour yourself? I'll also try to test this soon as I get some cycles.
> NodeManager should identify failed disks becoming good back again
> -----------------------------------------------------------------
>
> Key: YARN-90
> URL: https://issues.apache.org/jira/browse/YARN-90
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Reporter: Ravi Gummadi
> Attachments: YARN-90.1.patch, YARN-90.patch
>
>
> MAPREDUCE-3121 makes NodeManager identify disk failures. But once a disk goes
> down, it is marked as failed forever. To reuse that disk (after it becomes
> good), NodeManager needs restart. This JIRA is to improve NodeManager to
> reuse good disks(which could be bad some time back).
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