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https://issues.apache.org/jira/browse/PIG-3365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14042571#comment-14042571
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Mona Chitnis commented on PIG-3365:
-----------------------------------
Consider changing using strings directly e.g.
{{"mapreduce.job.ubertask.enable"}} to declaring them as final static String
variables at the top, to avoid having to change them in multiple places.
Also, can we use conf property {{"dfs.block.size"}} instead of the new method
for {{getDefaultBlockSize}}? Please correct me if wrong.
> 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
> Assignee: Lorand Bendig
> Labels: Performance
> Attachments: PIG-3365.patch
>
>
> 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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