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https://issues.apache.org/jira/browse/MAHOUT-969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399280#comment-13399280
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Sean Owen commented on MAHOUT-969:
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Can this be a patch? It's not clear what is changed by you and what diffs are 
drift since HEAD versions have changed.
                
> testclassifier should check if the model file actually exists 
> --------------------------------------------------------------
>
>                 Key: MAHOUT-969
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-969
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Integration
>    Affects Versions: 0.6
>            Reporter: Stuart Smith
>            Priority: Minor
>         Attachments: BayesClassifierDriver.java, HadoopUtil.java
>
>
> The ./mahout testclassifier command for naive bayes does not check if the 
> -model argument actually exists on the hdfs file system.
> If it does not exist, it appears to run successfully, but generates all 
> zeroes in the results.

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