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https://issues.apache.org/jira/browse/HDFS-1155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916730#action_12916730
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Dmytro Molkov commented on HDFS-1155:
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My original assumption is not entirely accurate. Instead of moving the method I
would like to duplicate the definition in the NameNode protocol and only make
changes to the Balancer code to use a single nameNode protocol to talk to the
namenode.
> getDatanodeReport can be moved to NameNodeProtocol from ClientProtocol
> ----------------------------------------------------------------------
>
> Key: HDFS-1155
> URL: https://issues.apache.org/jira/browse/HDFS-1155
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Dmytro Molkov
> Assignee: Dmytro Molkov
>
> Right now getDatanodeReport is being used in only two places in the HDFS
> code: the Balancer and DFSAdmin. And it is the only reason for these classes
> to use DFSClient. If we would move the method definition (or copy for now
> deprecating the old location) to the NameNode protocol DFSAdmin and Balancer
> will not rely on DFSClient anymore and will be cleaner. This will also help
> the Balancer to run cleaner against HDFS-599 changes.
> Thoughts?
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