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https://issues.apache.org/jira/browse/MAHOUT-893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated MAHOUT-893:
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             Priority: Minor  (was: Major)
    Affects Version/s:     (was: 0.6)
                       0.5
             Assignee: Sean Owen  (was: Benson Margulies)

Hmm, I can't reproduce this. The tests don't fail, for example. Are you sure 
it's not due to something else you're including? Or I could believe it's just 
including a different subset of modules in a different order could trip over 
some latent clash here. It should do no harm to exclude its old version of 
collections, so can add this. Will test first.
                
> Dependency Clash : Google Collections and Guava
> -----------------------------------------------
>
>                 Key: MAHOUT-893
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-893
>             Project: Mahout
>          Issue Type: Bug
>          Components: collections
>    Affects Versions: 0.5
>         Environment: windows
>            Reporter: Paritosh Ranjan
>            Assignee: Sean Owen
>            Priority: Minor
>              Labels: patch
>             Fix For: 0.6
>
>         Attachments: MAHOUT-893
>
>
> I tried to run the Recommender example in Mahout in Action Book.
>         DataModel model = new FileDataModel(new File("intro.csv"));
>         UserSimilarity similarity = new PearsonCorrelationSimilarity(model);
> The dependencies from google collections and guava are clashing while 
> execution. Its picking some wrong class like Preconditions and few others 
> which is giving error on runtime. I fixed that by excluding 
> google-collections. The patch is attached which helped me fix this problem.

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