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Posted to mapreduce-issues@hadoop.apache.org by "Radim Kolar (JIRA)" <ji...@apache.org> on 2012/06/18 11:16:44 UTC

[jira] [Commented] (MAPREDUCE-3968) add support for getNumMapTasks() into mapreduce JobContext

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13395756#comment-13395756 ] 

Radim Kolar commented on MAPREDUCE-3968:
----------------------------------------

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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