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Posted to dev@mahout.apache.org by "Dmitriy Lyubimov (JIRA)" <ji...@apache.org> on 2011/08/18 20:40:27 UTC

[jira] [Commented] (MAHOUT-777) Improve TransposeJob to use a Combiner

    [ https://issues.apache.org/jira/browse/MAHOUT-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087182#comment-13087182 ] 

Dmitriy Lyubimov commented on MAHOUT-777:
-----------------------------------------

looks reasonable.

> Improve TransposeJob to use a Combiner
> --------------------------------------
>
>                 Key: MAHOUT-777
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-777
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Math
>    Affects Versions: 0.6
>            Reporter: Sebastian Schelter
>            Assignee: Sebastian Schelter
>             Fix For: 0.6
>
>         Attachments: MAHOUT-777.patch
>
>
> I saw that TransposeJob has a comment that it needs a rewrite to use a combiner. If we emit vectors instead of MatrixEntryWritables we should be able to "merge" them in a combiner.

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