X-czh commented on code in PR #24187:
URL: https://github.com/apache/flink/pull/24187#discussion_r1466383083


##########
flink-core/src/main/java/org/apache/flink/api/common/state/StateDescriptor.java:
##########
@@ -320,7 +320,10 @@ public void initializeSerializerUnlessSet(ExecutionConfig 
executionConfig) {
                     @Override
                     public <T> TypeSerializer<T> createSerializer(
                             TypeInformation<T> typeInformation) {
-                        return 
typeInformation.createSerializer(executionConfig);
+                        return typeInformation.createSerializer(

Review Comment:
   Null value is not checked for executor config in many other places, why do 
we explicitly check it here? 



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