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From "Dmytro Molkov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-947) The namenode should redirect a hftp request to read a file to the datanode that has the maximum number of local replicas
Date Thu, 17 Jun 2010 18:59:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12879891#action_12879891
] 

Dmytro Molkov commented on HDFS-947:
------------------------------------

I ran hadoopQA locally since Hudson keeps ignoring this jira:


[exec] +1 overall.  
[exec] 
[exec]     +1 @author.  The patch does not contain any @author tags.
[exec] 
[exec]     +1 tests included.  The patch appears to include 4 new or modified tests.
[exec] 
[exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
[exec] 
[exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
[exec] 
[exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
[exec] 
[exec]     +1 release audit.  The applied patch does not increase the total number of release
audit warnings.

The tests also ran fine.

> 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: Dmytro Molkov
>         Attachments: HDFS-947.2.patch, HDFS-947.patch, 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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