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From "Han Hui Wen (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAHOUT-483) Job RowSimilarityJob-Mapper-EntriesToVectorsReducer improvement
Date Wed, 18 Aug 2010 16:03:17 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Han Hui Wen  updated MAHOUT-483:
--------------------------------

    Attachment: screenshot-1.jpg

> Job RowSimilarityJob-Mapper-EntriesToVectorsReducer improvement 
> ----------------------------------------------------------------
>
>                 Key: MAHOUT-483
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-483
>             Project: Mahout
>          Issue Type: Test
>          Components: Collaborative Filtering
>    Affects Versions: 0.4
>            Reporter: Han Hui Wen 
>             Fix For: 0.4
>
>         Attachments: screenshot-1.jpg
>
>
> the Mapper phase of Job RowSimilarityJob-Mapper-EntriesToVectorsReducer uses too long
time but do nothing actually.
> Can we move the EntriesToVectorsReducer task to Mapper phase ? set the Reducer phase
is null,
> So can improve the performance.

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