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https://issues.apache.org/jira/browse/MAPREDUCE-3968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13395756#comment-13395756
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Radim Kolar commented on MAPREDUCE-3968:
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Yes, i need to know number of splits.
> add support for getNumMapTasks() into mapreduce JobContext
> ----------------------------------------------------------
>
> Key: MAPREDUCE-3968
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3968
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv1
> Affects Versions: trunk
> Environment: hadoop 0.22
> Reporter: Radim Kolar
> Priority: Minor
> Attachments: MAPREDUCE-3968.patch
>
>
> In old mapred api there was way to query number of mappers:
> job.getNumMapTasks())
> No such function exists in new mapreduce api
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