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From "Forest Tan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-2931) CLONE - LocalJobRunner should support parallel mapper execution
Date Mon, 05 Sep 2011 08:47:10 GMT
CLONE - LocalJobRunner should support parallel mapper execution
---------------------------------------------------------------

                 Key: MAPREDUCE-2931
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2931
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Forest Tan
            Assignee: Aaron Kimball
             Fix For: 0.21.0


The LocalJobRunner currently supports only a single execution thread. Given the prevalence
of multi-core CPUs, it makes sense to allow users to run multiple tasks in parallel for improved
performance on small (local-only) jobs.

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