1996fanrui commented on code in PR #26831:
URL: https://github.com/apache/flink/pull/26831#discussion_r2230489782


##########
flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/state/rocksdb/AbstractRocksDBState.java:
##########
@@ -176,7 +176,10 @@ <T> byte[] serializeValueNullSensitive(T value, 
TypeSerializer<T> serializer)
             throws IOException {
         dataOutputView.clear();
         dataOutputView.writeBoolean(value == null);
-        return serializeValueInternal(value, serializer);
+        if (value != null) {
+            serializer.serialize(value, dataOutputView);
+        }
+        return dataOutputView.getCopyOfBuffer();

Review Comment:
   Hey @rkhachatryan , I found the change log state backend is serialized in 
https://issues.apache.org/jira/browse/FLINK-21355 , hope to hear your opinion 
as well. 
   
   Thank you both in advance.



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