Github user GJL commented on a diff in the pull request:
https://github.com/apache/flink/pull/5236#discussion_r159465653
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/HeapInternalTimerService.java
---
@@ -442,23 +458,15 @@ public int numEventTimeTimers() {
}
public int numProcessingTimeTimers(N namespace) {
--- End diff --
`@Override` annotation is missing---
