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https://issues.apache.org/jira/browse/HDFS-1121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13272149#comment-13272149
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Harsh J commented on HDFS-1121:
-------------------------------
Isn't monitoring
http://DNHOST:50075/jmx?qry=hadoop:service=DataNode,name=DataNodeInfo
individually sufficient for getting volume-info results, to measure disk-level
balance for your clusters?
I don't think we should increase the DN heartbeat payload when this is already
exposed at the DN level?
> 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
> Attachments: HDFS-1121.0.patch
>
>
> 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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