Cheng Lian created SPARK-13540:
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Summary: Scala object can't be added to OuterScopes
Key: SPARK-13540
URL: https://issues.apache.org/jira/browse/SPARK-13540
Project: Spark
Issue Type: Bug
Reporter: Cheng Lian
Add the following test case to {{DatasetSuite}} to reproduce this issue:
{code}
object OuterObject {
case class InnerClass(a: String)
}
test("foo") {
OuterScopes.addOuterScope(OuterObject)
Seq(OuterObject.InnerClass("foo")).toDS()
}
{code}
Exception thrown:
{noformat}
org.apache.spark.sql.AnalysisException: Unable to generate an encoder for inner
class `org.apache.spark.sql.OuterObject$InnerClass` without access to the scope
that this class was defined in.
{noformat}
The reason is that the class name added to {{OuterScope}} is the the one with
{{$}} suffix (class name of the object), while the Java declaring class of
{{InnerClass}} is the one without {{$}} suffix.
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