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From "Fangshi Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-23862) Spark ExpressionEncoder should support java enum type in scala
Date Wed, 09 May 2018 17:48:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-23862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Fangshi Li updated SPARK-23862:
-------------------------------
    Issue Type: Bug  (was: Improvement)

> 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: Bug
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: Fangshi Li
>            Priority: Major
>
> 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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