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https://issues.apache.org/jira/browse/MAHOUT-2023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16221276#comment-16221276
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Pat Ferrel commented on MAHOUT-2023:
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While I agree this is a bug, I don't understand the relevance of above PR or
the referenced Jira.
The suspicion of Scopt not having a scala 2.11 is wrong. Scopt is popular and
under active development with many scala versions supported up to 2.12 and back
as far as 2.9.3.
There is a problem with the current build here:
https://issues.apache.org/jira/browse/MAHOUT-2020 and until it is resolved this
bug may be hard to fix since it involves modifying the poms like 2020 does.
> 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: Pat Ferrel
> 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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