getDatanodeReport can be moved to NameNodeProtocol from ClientProtocol
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Key: HDFS-1155
URL: https://issues.apache.org/jira/browse/HDFS-1155
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: 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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