Takuya Ueshin created SPARK-23141:
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Summary: Support data type string as a returnType for
registerJavaFunction.
Key: SPARK-23141
URL: https://issues.apache.org/jira/browse/SPARK-23141
Project: Spark
Issue Type: Improvement
Components: PySpark, SQL
Affects Versions: 2.3.0
Reporter: Takuya Ueshin
Currently {{UDFRegistration.registerJavaFunction}} doesn't support data type
string as a returnType whereas {{UDFRegistration.register}}, {{@udf}}, or
{{@pandas_udf}} does.
We can support it for {{UDFRegistration.registerJavaFunction}} as well.
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