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https://issues.apache.org/jira/browse/HDFS-1564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12999804#comment-12999804
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mag commented on HDFS-1564:
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I was the reporter of this issue. Aaron relied my problem correctly. We have
many heterogeneous disks ranging from 80GB to 2TB. We have filesystems layed
out like this, /fs1, /fs2, /fs3, /fs4, etc... Each filesystem varies in size
significantly therefore it would be nice to setup 'dfs.datanode.du.reserved'
(or pct) by volume basis.
> Make dfs.datanode.du.reserved configurable per volume
> -----------------------------------------------------
>
> Key: HDFS-1564
> URL: https://issues.apache.org/jira/browse/HDFS-1564
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: data-node
> Reporter: Aaron T. Myers
> Priority: Minor
>
> In clusters with DNs which have heterogeneous data dir volumes, it would be
> nice if dfs.datanode.du.reserved could be configured per-volume.
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