Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/3359#discussion_r106671770
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/AbstractStreamOperator.java
---
@@ -477,7 +478,7 @@ public void initializeState(StateInitializationContext
context) throws Exception
for (int i = 0; i < noOfTimerServices; i++) {
String serviceName = div.readUTF();
- HeapInternalTimerService<?, ?>
timerService = this.timerServices.get(serviceName);
+ InternalTimerService<?, ?> timerService
= this.timerServices.get(serviceName);
--- End diff --
Maybe you could add a parameter to the factory method that allow us to
derive the generic types of key and value (e.g. the type serializers).
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