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https://issues.apache.org/jira/browse/HADOOP-6749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod K V resolved HADOOP-6749.
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Resolution: Duplicate
Hong is right, I am closing this as duplicate of MAPREDUCE-1379. Please read
the discussions there and reopen this one if you don't agree.
> Add mapred.tasktracker.tasks.maximum to limit the total number of map and
> reduce tasks
> --------------------------------------------------------------------------------------
>
> Key: HADOOP-6749
> URL: https://issues.apache.org/jira/browse/HADOOP-6749
> Project: Hadoop Common
> Issue Type: New Feature
> Components: conf
> Affects Versions: 0.20.2
> Reporter: Ted Yu
>
> We have mapred.tasktracker.map.tasks.maximum and
> mapred.tasktracker.reduce.tasks.maximum now.
> It is desirable to have mapred.tasktracker.tasks.maximum which limits the
> total number of map and reduce tasks. Meaning its value may be lower than
> (mapred.tasktracker.map.tasks.maximum +
> mapred.tasktracker.reduce.tasks.maximum)
> This would be useful in a cluster whose nodes are multi-core.
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