pnowojski commented on a change in pull request #16582:
URL: https://github.com/apache/flink/pull/16582#discussion_r677345113
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/StreamOperator.java
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@@ -43,7 +43,7 @@
* @param <OUT> The output type of the operator
*/
@PublicEvolving
-public interface StreamOperator<OUT> extends CheckpointListener, KeyContext,
Serializable {
+public interface StreamOperator<OUT> extends InternalCheckpointListener,
KeyContext, Serializable {
Review comment:
I'm also not sure if it makes sense to expose
`notifyCheckpointSubsumed()` to the users. And if we don't have a good
motivating example, I would prefer to not expose it. Why clog the public API at
best? And at worst this could cause us problems down the road for providing
backward compatibility/refactoring. If needed, we can always add this
notification later. Removing and maintaining things is harder.
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