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https://issues.apache.org/jira/browse/SPARK-19087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-19087.
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Resolution: Duplicate
> Numpy types fail to be casted to any other types
> ------------------------------------------------
>
> Key: SPARK-19087
> URL: https://issues.apache.org/jira/browse/SPARK-19087
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 1.6.0
> Environment: Red Hat 6.6, Spark 1.6.0, Python 2.7.10 (anaconda)
> Reporter: Ivan SPM
> Priority: Minor
> Labels: numpy, type-converter
>
> An UDF cannot return a numpy type, it has to be one of the Python basic
> types. The error when a numpy type is returned is
> TypeError: ufunc 'nan' not supported for the input types, and the inputs
> could not be safely coerced to any supported types according to the casting
> rule ''safe''
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