Github user kl0u commented on a diff in the pull request: https://github.com/apache/flink/pull/5500#discussion_r171252385 --- Diff: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/co/KeyedBroadcastProcessFunction.java --- @@ -163,12 +163,16 @@ public void onTimer(final long timestamp, final OnTimerContext ctx, final Collec /** * Information available in an invocation of {@link #onTimer(long, OnTimerContext, Collector)}. */ - public abstract class OnTimerContext extends KeyedReadOnlyContext { + public abstract class OnTimerContext<KS> extends KeyedReadOnlyContext { --- End diff -- You can remove the `<KS>` as done in https://github.com/apache/flink/pull/5481
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