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Posted to dev@mahout.apache.org by "Lance Norskog (Commented) (JIRA)" <ji...@apache.org> on 2011/12/25 04:03:32 UTC

[jira] [Commented] (MAHOUT-920) Remove a mapreduce job from parallel FPGrowth workflow

    [ https://issues.apache.org/jira/browse/MAHOUT-920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13175793#comment-13175793 ] 

Lance Norskog commented on MAHOUT-920:
--------------------------------------

The patch is named -890. Did you mean this?
                
> Remove a mapreduce job from parallel FPGrowth workflow
> ------------------------------------------------------
>
>                 Key: MAHOUT-920
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-920
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Frequent Itemset/Association Rule Mining
>    Affects Versions: 0.6
>            Reporter: tom pierce
>            Priority: Minor
>         Attachments: MAHOUT-890.patch
>
>
> The transaction sorting job could have been made map-only, and another mapreduce job follows, so it made sense to combine them.  It would have been possible to use a ChainMapper approach, but it seemed simpler to fold the functionality into the following mapper (ParallelFPGrowthMapper).  The attached patch does just that.

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