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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1848) Datanodes should shutdown when a critical volume fails
Date Thu, 21 Apr 2011 08:46:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13022686#comment-13022686
] 

dhruba borthakur commented on HDFS-1848:
----------------------------------------

I too am not clear why the datanode process has to watch over "critical" disks. It would be
nice if the datanode considers all disks the same.

> 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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