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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3815) Data Locality suffers if the AM asks for containers using IPs instead of hostnames
Date Tue, 07 Feb 2012 22:11:05 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13202864#comment-13202864
] 

Hudson commented on MAPREDUCE-3815:
-----------------------------------

Integrated in Hadoop-Hdfs-0.23-Commit #499 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Commit/499/])
    MAPREDUCE-3815. Fixed MR AM to always use hostnames and never IPs when requesting containers
so that scheduler can give off data local containers correctly. Contributed by Siddarth Seth.
svn merge --ignore-ancestry -c 1241654 ../../trunk/

vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1241655
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TaskAttemptImpl.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestTaskAttempt.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestTaskImpl.java

                
> Data Locality suffers if the AM asks for containers using IPs instead of hostnames
> ----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3815
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3815
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>            Priority: Critical
>             Fix For: 0.23.1
>
>         Attachments: MR3815.txt
>
>
> BlockLocation.getHosts() returns IP addresses occasionally. Data locality is affected
- since the RM requires hostnames.

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