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Posted to dev@pig.apache.org by "Prashant Kommireddi (JIRA)" <ji...@apache.org> on 2013/06/30 01:18:20 UTC
[jira] [Commented] (PIG-3365) Run as uber job if there is only one
input split
[ https://issues.apache.org/jira/browse/PIG-3365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13696212#comment-13696212 ]
Prashant Kommireddi commented on PIG-3365:
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Hi [~rohini], assuming the property mapreduce.job.ubertask.enable is not marked false and final - do you think this should be config defined or the default behavior?
> Run as uber job if there is only one input split
> ------------------------------------------------
>
> Key: PIG-3365
> URL: https://issues.apache.org/jira/browse/PIG-3365
> Project: Pig
> Issue Type: Improvement
> Reporter: Rohini Palaniswamy
> Labels: Performance
>
> Hadoop 2 has support for uber mode (mapreduce.job.ubertask.enable=true) which runs the map and reduce on Application Master itself and reduces the overhead of launching a separate map/reduce task.
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