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https://issues.apache.org/jira/browse/HDFS-1121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12890963#action_12890963
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Travis Crawford commented on HDFS-1121:
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Should clients care where their blocks get placed on disk? That seems like
something a datanode should be solely responsible for.
> Allow HDFS client to measure distribution of blocks across devices for a
> specific DataNode
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-1121
> URL: https://issues.apache.org/jira/browse/HDFS-1121
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Reporter: Jeff Hammerbacher
>
> As discussed on the mailing list, it would be useful if the DfsClient could
> measure the distribution of blocks across devices for an individual DataNode.
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