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Posted to mapreduce-dev@hadoop.apache.org by "Harsh J (JIRA)" <ji...@apache.org> on 2011/07/04 08:45:22 UTC
[jira] [Created] (MAPREDUCE-2640) The maxRunningTasks property of
the LimitTasksPerJob scheduler is ambiguous in its description, and must be
updated
The maxRunningTasks property of the LimitTasksPerJob scheduler is ambiguous in its description, and must be updated
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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
Fix For: 0.23.0
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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