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https://issues.apache.org/jira/browse/MAHOUT-484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12901780#action_12901780
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Sebastian Schelter commented on MAHOUT-484:
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Your patch file contains changes that have absolutely nothing todo with the 
issue reported here AFAIK. I think they are related to a discussion on the user 
mailing list about user-specific filtering.

I cannot see why the RecommenderJob fails for you, it ran without problems on 
my local machine and on EMR. Did you test the latest version from the 
repository or did your test include your own changes?

> The RecommenderJob exit ,some sub-jobs can not be run.
> ------------------------------------------------------
>
>                 Key: MAHOUT-484
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-484
>             Project: Mahout
>          Issue Type: Test
>          Components: Collaborative Filtering
>    Affects Versions: 0.4
>            Reporter: Han Hui Wen 
>         Attachments: hs_err_pid7384.log, patch-20100820.txt, 
> screenshot-1.jpg, screenshot-2.jpg
>
>
> I have done a few test today, 
> The RecommenderJob exit in middle.
> The first time it exited when it finished 
> RowSimilarityJob-CooccurrencesMapper-SimilarityReducer
> the second time it exited when it finished 
> RECOMMENDATION_dogear_bookmark-Mapper-EntriesToVectorsReducer

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