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Date: Sun, 17 Aug 2008 20:30:44 -0700 (PDT)
From: "Ramya R (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-3150) Move task file promotion into the
 task
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    [ https://issues.apache.org/jira/browse/HADOOP-3150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12623250#action_12623250 ] 

Ramya R commented on HADOOP-3150:
---------------------------------

Tested the patch for small jobs benchmark on 500 nodes with 900 maps, 450 reduces and 10000 lines per job. 
The patch did not degrade the performance. The deviation observed was less than 2%. 

> Move task file promotion into the task
> --------------------------------------
>
>                 Key: HADOOP-3150
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3150
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Owen O'Malley
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.19.0
>
>         Attachments: 3150.patch, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt, patch-3150.txt
>
>
> We need to move the task file promotion from the JobTracker to the Task and move it down into the output format.

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