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https://issues.apache.org/jira/browse/MAPREDUCE-316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-316.
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Resolution: Won't Fix
Closing this as won't fix. As was pointed out, there are other ways.
> Splittability of input should be controllable by application
> ------------------------------------------------------------
>
> Key: MAPREDUCE-316
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-316
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Environment: ALL
> Reporter: Milind Bhandarkar
> Assignee: Senthil Subramanian
> Attachments: HADOOP-1441_1.patch
>
>
> Currently, isSplittable method of FileInputFormat always returns true. For
> some applications, it becomes necessary that the map task process entire
> file, rather than a block. Therefore, splittability of input (i.e.
> block-level split vs file-level-split) should be controllable by user via a
> configuration variable. The default could be block-level split, as is.
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