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Matt Foley updated MAPREDUCE-2931: ---------------------------------- Target Version/s: 0.20.206.0 Fix Version/s: (was: 0.20.205.0) > 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 > > 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. > It is necessary to patch back MAPREDUCE-1367 into Hadoop 0.20.X version. > Also, MapReduce-434 should be submitted together. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira