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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-221) make the number of map output configurable
Date Wed, 31 May 2006 03:54:30 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-221?page=all ]
Owen O'Malley resolved HADOOP-221:

    Resolution: Duplicate

This functionality was superceded by the fix for HADOOP-254 (transfering map output files
via http).

> make the number of map output configurable
> ------------------------------------------
>          Key: HADOOP-221
>          URL: http://issues.apache.org/jira/browse/HADOOP-221
>      Project: Hadoop
>         Type: Improvement

>   Components: mapred
>     Versions: 0.2
>     Reporter: Owen O'Malley
>     Assignee: Owen O'Malley
>      Fix For: 0.3
>  Attachments: more-map-output-servers.patch
> The number of map output server threads in each task tracker is currently set to the
number of task slots. Since the optimum setting depends on the network, it would be nice to
have more threads serving map output files than reduces.

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