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https://issues.apache.org/jira/browse/MAHOUT-749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13057416#comment-13057416
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Elmer Garduno commented on MAHOUT-749:
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Hi Jeff, 

The CanopyDriver has the same problem, it also sets the numReducers=1 do you 
think that this kind of solution could also fix Canopy scalability issues?

> MeanShift Cannot Use Multiple Reducers
> --------------------------------------
>
>                 Key: MAHOUT-749
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-749
>             Project: Mahout
>          Issue Type: Improvement
>            Reporter: Jeff Eastman
>            Assignee: Jeff Eastman
>         Attachments: MAHOUT-749.patch
>
>
> The MeanShiftCanopy clustering job sets the numReducers=1 and this severely 
> limits its scalability for larger jobs.

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