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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8144) pseudoSortByDistance in NetworkTopology doesn't work properly if no local node and first node is local rack node
Date Thu, 12 Apr 2012 18:03:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252671#comment-13252671
] 

Hudson commented on HADOOP-8144:
--------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #2076 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2076/])
    HADOOP-8144. pseudoSortByDistance in NetworkTopology doesn't work properly if no local
node and first node is local rack node. Contributed by Junping Du (Revision 1325367)

     Result = ABORTED
eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1325367
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java

                
> pseudoSortByDistance in NetworkTopology doesn't work properly if no local node and first
node is local rack node
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8144
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8144
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 1.0.0, 0.23.0
>            Reporter: Junping Du
>            Assignee: Junping Du
>            Priority: Minor
>              Labels: patch
>             Fix For: 2.0.0
>
>         Attachments: HADOOP-8144-1.patch, HADOOP-8144-v2.patch, hadoop-8144.txt, hadoop-8144.txt
>
>
> pseudoSortByDistance in NetworkTopology.java should sort nodes according to its distance
with reader as local node, local rack node, ... 
> But if there is no local node with reader in nodes and the first node is local rack node
with reader, then it will put a random node at position 0.

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