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From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-6749) Add mapred.tasktracker.tasks.maximum to limit the total number of map and reduce tasks
Date Thu, 06 May 2010 04:25:51 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinod K V resolved HADOOP-6749.
-------------------------------

    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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