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https://issues.apache.org/jira/browse/HDFS-1848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13026127#comment-13026127
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dhruba borthakur commented on HDFS-1848:
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> Would something like mapreduce's healthChecker work
It could. I am surprised that this problem is not solved for non-hadoop related
workloads at your company. If the root disk is bad, most apps would benefit if
the machine is power-cycled. You must be having some company-wide diagnostics
software that runs on every machine (hadoop and non-hadoop machines) and
determines whether the machine in good health, isn't it?
> Datanodes should shutdown when a critical volume fails
> ------------------------------------------------------
>
> Key: HDFS-1848
> URL: https://issues.apache.org/jira/browse/HDFS-1848
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Reporter: Eli Collins
> Fix For: 0.23.0
>
>
> A DN should shutdown when a critical volume (eg the volume that hosts the OS,
> logs, pid, tmp dir etc.) fails. The admin should be able to specify which
> volumes are critical, eg they might specify the volume that lives on the boot
> disk. A failure in one of these volumes would not be subject to the threshold
> (HDFS-1161) or result in host decommissioning (HDFS-1847) as the
> decommissioning process would likely fail.
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