[ https://issues.apache.org/jira/browse/MAPREDUCE-99?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harsh J resolved MAPREDUCE-99. ------------------------------ Resolution: Cannot Reproduce Given that we've not seen this report for quite some time now, on 1.x nor 2.x, am closing this out as its gone stale. > Reducers throw oom exceptions during fetching map outputs > --------------------------------------------------------- > > Key: MAPREDUCE-99 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-99 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Runping Qi > > I have a job that ran fine if the flag for compressing the map output data to > false. > However, if the flag is set to true and the compression type set to block, > then > the reducers all died due to out of memory exceptions. > The heap size was set to 512M. > The problem persists even when the heapsize set to 1000M. -- 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