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https://issues.apache.org/jira/browse/MAHOUT-2023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282866#comment-16282866
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ASF GitHub Bot commented on MAHOUT-2023:
----------------------------------------

Github user andrewpalumbo commented on the issue:

    https://github.com/apache/mahout/pull/353
  
    Sry @pat @rawkintrevo.. I'd meant ship w/o Viennacl jars in 
dependency-reduced.xml.  yeah def have to fix scopt issue.
    
    
    
    Sent from my Verizon Wireless 4G LTE smartphone
    
    
    -------- Original message --------
    From: Pat Ferrel <[email protected]>
    Date: 12/07/2017 3:38 PM (GMT-08:00)
    To: apache/mahout <[email protected]>
    Cc: Andrew Palumbo <[email protected]>, Mention 
<[email protected]>
    Subject: Re: [apache/mahout] MAHOUT-2023 Fix Scopt Target (#353)
    
    
    @pferrel commented on this pull request.
    
    ________________________________
    
    In 
spark/src/main/assembly/dependency-reduced.xml<https://github.com/apache/mahout/pull/353#discussion_r155671810>:
    
    >          <include>com.tdunning:t-digest</include>
             <include>org.apache.commons:commons-math3</include>
             <include>it.unimi.dsi:fastutil</include>
    -        
<include>org.apache.mahout:mahout-native-viennacl_${scala.compat.version}</include>
    
    
    No we can't ship this with spark-itemsimilarity driver not working. about 
50% of the few questions on the list, not to mention the IBM folks are using it.
    
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> Drivers broken, scopt classes not found
> ---------------------------------------
>
>                 Key: MAHOUT-2023
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-2023
>             Project: Mahout
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.13.1
>         Environment: any
>            Reporter: Pat Ferrel
>            Assignee: Trevor Grant
>            Priority: Blocker
>             Fix For: 0.13.1
>
>
> Type `mahout spark-itemsimilarity` after Mahout is installed properly and you 
> get a fatal exception due to missing scopt classes.
> Probably a build issue related to incorrect versions of scopt being looked 
> for.



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