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From "Hudson (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 Wed, 15 Aug 2012 12:51:38 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13435028#comment-13435028
] 

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

Integrated in Hadoop-Hdfs-0.23-Build #344 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/344/])
    svn merge -c 1330613 FIXES: HDFS-3258. Test for HADOOP-8144 (pseudoSortByDistance in NetworkTopology
for first rack local node). Contributed by Junping Du (Revision 1372956)
svn merge -c 1325367 FIXES: 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
1372955)

     Result = SUCCESS
daryn : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1372956
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/net/TestNetworkTopology.java

bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1372955
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/branches/branch-0.23/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: 0.23.3, 2.0.0-alpha
>
>         Attachments: HADOOP-8144-1.patch, hadoop-8144.txt, hadoop-8144.txt, HADOOP-8144-v2.patch
>
>
> 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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