smiklosovic commented on code in PR #4943:
URL: https://github.com/apache/cassandra/pull/4943#discussion_r3594793402


##########
src/java/org/apache/cassandra/db/marshal/TypeParser.java:
##########
@@ -491,6 +489,19 @@ private static AbstractType<?> getAbstractType(String 
compareWith, TypeParser pa
         }
     }
 
+    private static Class<? extends AbstractType<?>> 
getAbstractTypeClass(String compareWith) throws ConfigurationException
+    {
+        String className = compareWith.contains(".") ? compareWith : 
"org.apache.cassandra.db.marshal." + compareWith;
+        // Defer class initialization until after confirming this is an 
AbstractType. The static instance field
+        // access or getInstance(TypeParser) invocation below performs the 
initialization for valid types.
+        @SuppressWarnings("unchecked")
+        Class<? extends AbstractType<?>> typeClass =
+            (Class<? extends AbstractType<?>>)(Class<?>) 
FBUtilities.classForNameWithoutInitialization(className,

Review Comment:
   two casts? 
   
   `(Class<? extends AbstractType<?>>)(Class<?>)`?



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