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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7030) Add TableMapping topology implementation to read host to rack mapping from a file
Date Fri, 23 Mar 2012 21:29:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13237154#comment-13237154
] 

Hudson commented on HADOOP-7030:
--------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #1996 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1996/])
    HADOOP-7030. Add TableMapping topology implementation to read host to rack mapping from
a file. Contributed by Patrick Angeles and tomwhite. (Revision 1304597)

     Result = SUCCESS
tomwhite : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1304597
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/fs/CommonConfigurationKeysPublic.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/TableMapping.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestTableMapping.java

                
> Add TableMapping topology implementation to read host to rack mapping from a file
> ---------------------------------------------------------------------------------
>
>                 Key: HADOOP-7030
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7030
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.20.1, 0.20.2, 0.21.0
>            Reporter: Patrick Angeles
>            Assignee: Tom White
>             Fix For: 0.23.3
>
>         Attachments: HADOOP-7030-2.patch, HADOOP-7030.patch, HADOOP-7030.patch, HADOOP-7030.patch,
HADOOP-7030.patch, topology.patch
>
>
> The default ScriptBasedMapping implementation of DNSToSwitchMapping for determining cluster
topology has some drawbacks. Principally, it forks to an OS-specific script.
> This issue proposes two new Java implementations of DNSToSwitchMapping. TableMapping
reads a two column text file that maps an IP or hostname to a rack ID. Ip4RangeMapping reads
a three column text file where each line represents a start and end IP range plus a rack ID.

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