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https://issues.apache.org/jira/browse/HADOOP-1728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das resolved HADOOP-1728.
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Resolution: Duplicate
Duplicate of HADOOP-1274
> Hadoop should allow the task trackerto to have different mapper/reducer task
> limits
> -----------------------------------------------------------------------------------
>
> Key: HADOOP-1728
> URL: https://issues.apache.org/jira/browse/HADOOP-1728
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Reporter: Runping Qi
>
> Right now, Hadoop has one configuration variable to set the limit on the
> number of tasks
> per task tracker. That number applies to both the mappers and reducers.
> However, in many
> cases, it make a lot of sense to set different limits on them, For example,
> since mappers
> are typically take less resources than reducers, we can set 4 as the limit on
> mappers
> and 2 on reducers. This will improve the cluster utilization and improve the
> overall performance.
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