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https://issues.apache.org/jira/browse/MAHOUT-2023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278854#comment-16278854
]
ASF GitHub Bot commented on MAHOUT-2023:
----------------------------------------
Github user andrewpalumbo commented on the issue:
https://github.com/apache/mahout/pull/353
I am almost positive that we need
```
<include>org.apache.mahout:mahout-native-viennacl_${scala.compat.version}</include>
<include>org.apache.mahout:mahout-native-viennacl-omp_${scala.compat.version}</include>
```
They are never actually dependencies, however are picked up on the back
ends at run time if they exist on the path, hence including them in the
`dependency-reduced.xml`. I will mess with it a little bit later today.
> 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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