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Posted to dev@mahout.apache.org by "Robin Anil (Assigned) (JIRA)" <ji...@apache.org> on 2012/01/15 17:18:39 UTC

[jira] [Assigned] (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:all-tabpanel ]

Robin Anil reassigned MAHOUT-920:
---------------------------------

    Assignee: Robin Anil
    
> 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
>            Assignee: Robin Anil
>            Priority: Minor
>         Attachments: MAHOUT-890.patch, MAHOUT-920.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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