yunfengzhou-hub commented on code in PR #20275:
URL: https://github.com/apache/flink/pull/20275#discussion_r928496513
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flink-runtime/src/main/java/org/apache/flink/runtime/operators/coordination/OperatorEventDispatcher.java:
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@@ -29,6 +29,9 @@ public interface OperatorEventDispatcher {
/**
* Register a listener that is notified every time an OperatorEvent is
sent from the
* OperatorCoordinator (of the operator with the given OperatorID) to this
subtask.
+ *
+ * <p>The stream operator with the given OperatorID must implement {@link
OperatorEventHandler}
Review Comment:
Because our consistency mechanism requires communications in both
directions, all operators with the corresponding OC must be registered as
handlers.
This is not required for implementations in this PR and may be used in our
solution's second phase to ticket FLINK-26029. So I'll remove this doc for now
and possibly add it back in the next PR.
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