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https://issues.apache.org/jira/browse/MAPREDUCE-1805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869750#action_12869750
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Hong Tang commented on MAPREDUCE-1805:
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+1. Maybe we should think about a naming scheme such that the property name
would identify itself as a client-side property, framework property, library
property, or application property.
> Document configurations parameters that are read by MapReduce framework and
> cannot be changed per job
> -----------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1805
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1805
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.20.2
> Environment: All
> Reporter: Milind Bhandarkar
>
> From the documentation in mapred-default.xml, it is not apparent whether the
> configurations parameters (such as mapred.tasktracker.map.tasks.maximum) can
> be specified per-job, or whether these parameters are read by the framework
> at start-up and can never be changed. It would be helpful to annotate the
> default configurations file with this information.
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