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https://issues.apache.org/jira/browse/MAPREDUCE-99?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J resolved MAPREDUCE-99.
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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.
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