diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala
index fae8de4780102..d76b4b8894783 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala
@@ -88,7 +88,9 @@ case class CreateFunctionCommand(
       } else {
         // For a permanent, we will store the metadata into underlying external catalog.
         // This function will be loaded into the FunctionRegistry when a query uses it.
-        // We do not load it into FunctionRegistry right now.
+        // We do not load it into FunctionRegistry right now, to avoid loading the resource and
+        // UDF class immediately, as the Spark application to create the function may not have
+        // access to the resource and/or UDF class.
         catalog.createFunction(func, ignoreIfExists)
       }
     }