wuchong commented on a change in pull request #12289:
URL: https://github.com/apache/flink/pull/12289#discussion_r431556847



##########
File path: 
flink-connectors/flink-hbase/src/main/java/org/apache/flink/addons/hbase/util/HBaseTypeUtils.java
##########
@@ -81,13 +81,16 @@ public static Object deserializeToObject(byte[] value, int 
typeIdx, Charset stri
         * Serialize the Java Object to byte array with the given type.
         */
        public static byte[] serializeFromObject(Object value, int typeIdx, 
Charset stringCharset) {
+               if (value == null){
+                       return EMPTY_BYTES;

Review comment:
       We introduced a `null-string-literal` option in the new hbase connector 
(see `HBaseDynamicTableFactory`) to handle this problem. I think we can 
introduce a same option in the old hbase connector.




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