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https://issues.apache.org/jira/browse/HADOOP-1274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12543261
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Arun C Murthy commented on HADOOP-1274:
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bq. Why shouldn't that be included with this patch? I think updating
documentation in the same commit as APIs are changed is appropriate.
I completely agree in principle. However we really need HADOOP-2160
(documentation by releases) before we can start enforcing this, correct?
Specifically this patch deprecates -{{mapred.tasktracker.tasks.maximum}}- and
adds {{mapred.tasktracker.map.tasks.maximum}} and
{{mapred.tasktracker.reduce.tasks.maximum}} for 0.16.0.
> 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
> Fix For: 0.16.0
>
> Attachments: patch-1274.txt, patch-1274.txt, patch-1274.txt,
> patch-1274.txt, patch-1274.txt, 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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