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https://issues.apache.org/jira/browse/SPARK-20864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16022345#comment-16022345
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yuhao yang commented on SPARK-20864:
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[~yuanjie] Could you please provide more code to help the investigation? From
the exception it looks like the issue is not caused by the algorithm, but
something in the data processing.
> I tried to run spark mllib PIC algorithm, but got error
> -------------------------------------------------------
>
> Key: SPARK-20864
> URL: https://issues.apache.org/jira/browse/SPARK-20864
> Project: Spark
> Issue Type: Question
> Components: MLlib
> Affects Versions: 2.1.1
> Reporter: yuanjie
> Priority: Blocker
>
> I use a very simple data:
> 1 2 3
> 2 1 3
> 3 1 3
> 4 5 2
> 4 6 2
> 5 6 2
> but when running I got:
> Exception in thread "main" : java.io.IOException:
> com.google.protobuf.ServiceException: java.lang.UnsupportedOperationException
> :This is supposed to be overridden by subclasses
> why？
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