Github user chermenin commented on a diff in the pull request:
https://github.com/apache/flink/pull/2723#discussion_r85782914
--- Diff:
flink-scala/src/main/scala/org/apache/flink/api/scala/typeutils/OptionSerializer.scala
---
@@ -65,7 +65,7 @@ class OptionSerializer[A](val elemSerializer:
TypeSerializer[A])
case Some(a) =>
target.writeBoolean(true)
elemSerializer.serialize(a, target)
- case None =>
+ case _ =>
--- End diff --
If use `2` for `null` value we will get `true` from `readBoolean` method
too.
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