Fangshi Li created SPARK-23862:
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Summary: Spark ExpressionEncoder should support java enum type in
scala
Key: SPARK-23862
URL: https://issues.apache.org/jira/browse/SPARK-23862
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.3.0
Reporter: Fangshi Li
In SPARK-21255, spark upstream adds support for creating encoders for java enum
types, but the support is only added to Java API(for enum working within Java
Beans). Since the java enum can come from third-party java library, we have use
case that requires
1. using java enum types as field of scala case class
2. using java enum as the type T in Dataset[T]
Spark ExpressionEncoder already supports ser/de many java types in
ScalaReflection, so we propose to add support for java enum as well, as a
follow up of SPARK-21255.
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