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Posted to hdfs-issues@hadoop.apache.org by "dhruba borthakur (JIRA)" <ji...@apache.org> on 2010/02/04 00:07:27 UTC

[jira] Updated: (HDFS-947) The namenode should redirect a hftp request to read a file to the datanode that has the maximum number of local replicas

     [ https://issues.apache.org/jira/browse/HDFS-947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur updated HDFS-947:
----------------------------------

    Attachment: hftpRedirection.patch

This is a patch fro hadoop 0.20. The namenode redirects a hftp read request to the datanode that has the max number of local replicas of the file.

> The namenode should redirect a hftp request to read a file to the datanode that has the maximum number of local replicas
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-947
>                 URL: https://issues.apache.org/jira/browse/HDFS-947
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>         Attachments: hftpRedirection.patch
>
>
> A client that uses the Hftp protocol to read a file is redirected by the namenode to a random datanode. It would be nice if the client gets redirected to a datanode that has the maximum number of local replicas of the blocks of the file.

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