lindong28 commented on code in PR #20454:
URL: https://github.com/apache/flink/pull/20454#discussion_r941438963
##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/RegularOperatorChain.java:
##########
@@ -198,7 +211,25 @@ public void snapshotState(
storage));
}
}
- sendAcknowledgeCheckpointEvent(checkpointMetaData.getCheckpointId());
+ }
+
+ private OperatorStateBackend getOperatorStateBackend(StreamOperator<?>
operator) {
+ OperatorStateBackend backend = null;
+ if (operator instanceof AbstractStreamOperator) {
+ backend = ((AbstractStreamOperator<?>)
operator).getOperatorStateBackend();
+ } else if (operator instanceof AbstractStreamOperatorV2) {
+ backend = ((AbstractStreamOperatorV2<?>)
operator).getOperatorStateBackend();
+ }
+
+ if (backend == null) {
Review Comment:
It seems more readable to use `else {...}` here.
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