yunfengzhou-hub commented on code in PR #25503:
URL: https://github.com/apache/flink/pull/25503#discussion_r1798675305


##########
flink-runtime/src/main/java/org/apache/flink/runtime/asyncprocessing/operators/AbstractAsyncStateStreamOperator.java:
##########


Review Comment:
   Shall we add some tests to cover the changes introduced in this PR?



##########
flink-runtime/src/main/java/org/apache/flink/runtime/asyncprocessing/operators/AbstractAsyncStateStreamOperator.java:
##########
@@ -324,6 +327,23 @@ public Object getCurrentKey() {
         return currentProcessingContext.getKey();
     }
 
+    // ------------------------------------------------------------------------
+    //  Metrics
+    // ------------------------------------------------------------------------
+
+    protected void reportOrForwardLatencyMarker(LatencyMarker marker) {

Review Comment:
   nit: Add `@Override`. Same for `processRecordAttributes`.



##########
flink-runtime/src/main/java/org/apache/flink/runtime/asyncprocessing/operators/AbstractAsyncStateStreamOperator.java:
##########
@@ -345,6 +365,56 @@ public void processWatermarkStatus(WatermarkStatus 
watermarkStatus) throws Excep
                 () -> super.processWatermarkStatus(watermarkStatus));
     }
 
+    @Override
+    protected void processWatermarkStatus(WatermarkStatus watermarkStatus, int 
index)
+            throws Exception {
+        if (!isAsyncStateProcessingEnabled()) {
+            super.processWatermarkStatus(watermarkStatus, index);
+            return;
+        }
+        asyncExecutionController.processNonRecord(
+                () -> {
+                    boolean wasIdle = combinedWatermark.isIdle();
+                    if (combinedWatermark.updateStatus(index - 1, 
watermarkStatus.isIdle())) {

Review Comment:
   Should it be `index`, instead of `index - 1`?
   
   And can we directly use `() -> super.processWatermarkStatus(...)` here?



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