itsaviu commented on code in PR #5125:
URL: https://github.com/apache/gravitino/pull/5125#discussion_r1798787186


##########
catalogs/catalog-jdbc-doris/src/main/java/org/apache/gravitino/catalog/doris/operation/DorisTableOperations.java:
##########
@@ -170,13 +170,12 @@ protected String generateCreateTableSql(
   }
 
   private Map<String, String> appendNecessaryProperties(Map<String, String> 
properties) {
-    Map<String, String> resultMap;
     if (properties == null) {
-      resultMap = new HashMap<>();
-    } else {
-      resultMap = new HashMap<>(properties);
+      return new HashMap<>();
     }
 
+    Map<String, String> resultMap = new HashMap<>(properties);

Review Comment:
   My thoughts was, the problem in L184 
`!properties.containsKey(REPLICATION_FACTOR` would be `properties` can be null 
and NPE could occur, so in L173 `properties == null` we check if it is NULL and 
return a empty Map right way. 



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