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https://issues.apache.org/jira/browse/MAPREDUCE-1884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12881009#action_12881009
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Hemanth Yamijala commented on MAPREDUCE-1884:
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We could also rename it, to reflect what it really is - a hint. Something like
mapred.map.tasks.hint. I fully agree that mapred.map.tasks is way too confusing.
> Remove/deprecate mapred.map.tasks tunable
> -----------------------------------------
>
> Key: MAPREDUCE-1884
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1884
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Allen Wittenauer
> Fix For: 0.22.0
>
>
> Considering it isn't used for much that I know, is there any reason to keep
> the mapred.map.tasks tunable hanging around? If not, let's remove it from
> the documentation, xml files, etc. All it does is generate user confusion
> when it doesn't work.
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