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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-842) change the open method in ClientProtocol to take an additional argument: clientMachine
Date Thu, 21 Dec 2006 02:47:22 GMT
change the open method in ClientProtocol to take an additional argument: clientMachine
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                 Key: HADOOP-842
                 URL: http://issues.apache.org/jira/browse/HADOOP-842
             Project: Hadoop
          Issue Type: Improvement
          Components: dfs
    Affects Versions: 0.9.2
            Reporter: Hairong Kuang
         Assigned To: Hairong Kuang
             Fix For: 0.10.0


The open method returns a list of blocks that belong to a file and, for each block, a list
of datanodes that contain the block.To improve reading efficiency, I'd like to return the
list of datanodes in the order of its distance to the client machine. So I suggest that we
make the open method to take an additional argument clientMachine which is in the format of
hostname:port#.

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