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Karam Singh commented on MAPREDUCE-3667: ---------------------------------------- Hi Arun I have similar setting for 0.23 and Hadoop-0.20.204 with GridMix and same trace mapred.job.shuffle.input.buffer.percent=0.7 is Hadoop 0.20.204 And mapreduce.reduce.shuffle.input.buffer.percent=0.7 Hadoop 0.20.204 reducers does not goes OOM, I have seen this in Hadoop.Next only. And even in Hadoop 0.23 the behavior is not consistent, random number of job used fail due to this. W.r.t to Hadoop-0.20.204 is not a regression > Gridmix jobs are failing with OOM in reduce shuffle phase. > ---------------------------------------------------------- > > Key: MAPREDUCE-3667 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3667 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Affects Versions: 0.23.0 > Reporter: Amol Kekre > Priority: Blocker > Fix For: 0.23.1 > > > Roll up bug for gridmix3 benchmark -- 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