goldmedal commented on code in PR #16523:
URL: https://github.com/apache/datafusion/pull/16523#discussion_r2164074452


##########
datafusion-examples/examples/async_udf.rs:
##########
@@ -243,9 +252,20 @@ impl AsyncScalarUDFImpl for AsyncEqual {
         Ok(DataType::Boolean)
     }
 
+    fn invoke_with_args(
+        &self,
+        _args: ScalarFunctionArgs,
+    ) -> Result<ColumnarValue> {
+        not_impl_err!("AsyncEqual can only be called from async contexts")
+    }
+}
+
+#[async_trait]
+ impl AsyncScalarUDFImpl for AsyncEqual {
+
     async fn invoke_async_with_args(
         &self,
-        args: AsyncScalarFunctionArgs,
+        args: ScalarFunctionArgs,

Review Comment:
   It makes sense to me. We allow the custom config. Allowing access to the 
config option can make UDF flexible.



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