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https://issues.apache.org/jira/browse/MAPREDUCE-3812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated MAPREDUCE-3812:
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Description:
After a few performance improvements tracked at MAPREDUCE-3561, like
MAPREDUCE-3511 and MAPREDUCE-3567, even a 100K maps job can also run within 1GB
vmem. We earlier increased AM slot size from 1 slot to two slots to work around
the issues with AM heap. Now that those are fixed, we should go back to 1GB.
This is just a configuration change.
Affects Version/s: 0.23.0
Fix Version/s: 0.23.1
Assignee: Vinod Kumar Vavilapalli
> Change default AM slot size to be 1GB
> -------------------------------------
>
> Key: MAPREDUCE-3812
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3812
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mrv2, performance
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.23.1
>
>
> After a few performance improvements tracked at MAPREDUCE-3561, like
> MAPREDUCE-3511 and MAPREDUCE-3567, even a 100K maps job can also run within
> 1GB vmem. We earlier increased AM slot size from 1 slot to two slots to work
> around the issues with AM heap. Now that those are fixed, we should go back
> to 1GB.
> This is just a configuration change.
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