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https://issues.apache.org/jira/browse/HDFS-1161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868809#action_12868809
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Koji Noguchi commented on HDFS-1161:
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bq. How about "dfs.datanode.failed.volumes.tolerated" that defaults to 0 (ie
any volume failure causes the DN to stop service)?
+1
HDFS-457 was introduced in 0.21, can we somehow include this as part of 0.21 as
well ?
> Make DN minimum valid volumes configurable
> ------------------------------------------
>
> Key: HDFS-1161
> URL: https://issues.apache.org/jira/browse/HDFS-1161
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Affects Versions: 0.22.0
> Reporter: Eli Collins
> Assignee: Eli Collins
> Fix For: 0.22.0
>
> Attachments: hdfs-1161-1.patch, hdfs-1161-2.patch, hdfs-1161-3.patch
>
>
> The minimum number of non-faulty volumes to keep the DN active is hard-coded
> to 1. It would be useful to allow users to configure this value so the DN
> can be taken offline when eg half of its disks fail, otherwise it doesn't get
> reported until it's down to it's final disk and suffering degraded
> performance.
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