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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2640) The maxRunningTasks property of the LimitTasksPerJob scheduler is ambiguous in its description, and must be updated
Date Sat, 03 Sep 2011 17:44:10 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J updated MAPREDUCE-2640:
-------------------------------

    Status: Patch Available  (was: Open)

> The maxRunningTasks property of the LimitTasksPerJob scheduler is ambiguous in its description,
and must be updated
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2640
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2640
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: documentation
>    Affects Versions: 0.20.2
>            Reporter: Harsh J
>            Assignee: Harsh J
>              Labels: doc
>             Fix For: 0.23.0
>
>         Attachments: 0.22-MAPREDUCE-2640.r1.diff, 0.23-MAPREDUCE-2640.r1.diff, MAPREDUCE-2640.r1.diff
>
>
> The property's entry in mapred-default.xml is like so:
> {code}
> <property>
>   <name>mapreduce.jobtracker.taskscheduler.maxrunningtasks.perjob</name>
>   <value></value>
>   <description>The maximum number of running tasks for a job before
>   it gets preempted. No limits if undefined.
>   </description>
> </property>
> {code}
> There is no mention that this is a property exclusive to the LimitTasksPerJob scheduler
alone. The doc ought to be updated to note that unless there's a plan of reusing such a property
(I do not see fair or capacity schedulers utilizing this, and they use their own configs).

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