Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/3824#discussion_r114771179
--- Diff:
flink-streaming-scala/src/main/scala/org/apache/flink/streaming/api/scala/function/ProcessAllWindowFunction.scala
---
@@ -35,7 +35,9 @@ import org.apache.flink.util.Collector
* @tparam W The type of the window.
*/
@PublicEvolving
-abstract class ProcessAllWindowFunction[IN, OUT, W <: Window] extends
Function with Serializable {
+abstract class ProcessAllWindowFunction[IN, OUT, W <: Window]
--- End diff --
I think the `Serializable` is not needed here. (Was there before, so not
introduced in this PR)
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