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Posted to mapreduce-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2013/11/01 16:11:30 UTC

[jira] [Commented] (MAPREDUCE-434) LocalJobRunner limited to single reducer

    [ https://issues.apache.org/jira/browse/MAPREDUCE-434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13811324#comment-13811324 ] 

Jason Lowe commented on MAPREDUCE-434:
--------------------------------------

It looks like Arun's earlier comment about porting this to the uber AM case was missed, as this change has broken any ubertask job that has reducers.  See MAPREDUCE-5481.

[~sandyr] could you take a look?

> LocalJobRunner limited to single reducer
> ----------------------------------------
>
>                 Key: MAPREDUCE-434
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-434
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>         Environment: local job tracker
>            Reporter: Yoram Arnon
>            Assignee: Aaron Kimball
>            Priority: Minor
>             Fix For: 2.3.0
>
>         Attachments: MAPREDUCE-434.2.patch, MAPREDUCE-434.3.patch, MAPREDUCE-434.4.patch, MAPREDUCE-434.5.patch, MAPREDUCE-434.6.patch, MAPREDUCE-434.patch, MAPREDUCE-434.patch, MAPREDUCE-434.patch, MAPREDUCE-434.patch, MAPREDUCE-434.patch, MAPREDUCE-434.patch
>
>
> when mapred.job.tracker is set to 'local', my setNumReduceTasks call is ignored, and the number of reduce tasks is set at 1.
> This prevents me from locally debugging my partition function, which tries to partition based on the number of reduce tasks.



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