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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 17:40:06 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13022840#comment-13022840
] 

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

thanks Eli/Koji for the explanation. are you saying that the datanode will watch over the
root disk at "/" even though the datanode does not store any hdfs data blocks on the root
disk? Or will the datanode watch over the root disk only if there is a data directory configured
inside 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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