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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-842) change the open method in ClientProtocol to take an additional argument: clientMachine
Date Sat, 06 Jan 2007 00:11:27 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated HADOOP-842:
--------------------------------

    Fix Version/s:     (was: 0.10.1)
                   0.11.0

> change the open method in ClientProtocol to take an additional argument: clientMachine
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-842
>                 URL: https://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: 0.11.0
>
>         Attachments: open.patch, open1.patch
>
>
> 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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