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https://issues.apache.org/jira/browse/HADOOP-1274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12538481
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Devaraj Das commented on HADOOP-1274:
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Arun, regarding comment#1, I think we can leave the conversion as is since we
won't have "int" number of task-slots in a tasktracker. Maybe 4-8-10. But we do
save some network bandwidth by transmitting shorts.
Regarding comment#3, I think we should continue to have both map/reduce slots
use the same padding. Don't think this is related to the issue being addressed
here.
> Configuring different number of mappers and reducers per TaskTracker
> --------------------------------------------------------------------
>
> Key: HADOOP-1274
> URL: https://issues.apache.org/jira/browse/HADOOP-1274
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Reporter: Koji Noguchi
> Assignee: Amareshwari Sri Ramadasu
> Priority: Minor
> Fix For: 0.16.0
>
> Attachments: patch-1274.txt
>
>
> Depending on the application, it sometimes make sense to have more mappers
> than reducers assigned to each node.
> (I'm assuming user either has a dedicated cluster or use HOD.)
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