[SPARK-19741] ClassCastException when using Dataset with type containing value types

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 2.1.0
• Component/s: Spark Core, SQL
• Labels: bulk-closed

Environment

JDK 8 on Ubuntu
Scala 2.11.8
Spark 2.1.0

• Assignee: Unassigned
• Reporter: Lior Regev
• Created: 26/Feb/17 10:27
• Updated: 12/Dec/22 18:11
• Resolved: 21/May/19 04:14

Description

The following code reproduces the error

final case class Foo(id: Int) extends AnyVal
final case class Bar(foo: Foo)
val foo = Foo(5)
val bar = Bar(foo)
import spark.implicits._
spark.sparkContext.parallelize(0 to 10).toDS().map(_ => bar).collect()

Issue Links

• relates to: SPARK-20384 supporting value classes over primitives in DataSets