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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (MAHOUT-2023) Drivers broken, scopt classes not found
Date Fri, 08 Dec 2017 01:12:00 GMT


ASF GitHub Bot commented on MAHOUT-2023:

Github user andrewpalumbo commented on the issue:
    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 <>
    Date: 12/07/2017 3:38 PM (GMT-08:00)
    To: apache/mahout <>
    Cc: Andrew Palumbo <>, Mention <>
    Subject: Re: [apache/mahout] MAHOUT-2023 Fix Scopt Target (#353)
    @pferrel commented on this pull request.
    In spark/src/main/assembly/dependency-reduced.xml<>:
    >          <include>com.tdunning:t-digest</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.
    You are receiving this because you were mentioned.
    Reply to this email directly, view it on GitHub<>,
or mute the thread<>.

> Drivers broken, scopt classes not found
> ---------------------------------------
>                 Key: MAHOUT-2023
>                 URL:
>             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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