jecsand838 commented on code in PR #7889:
URL: https://github.com/apache/arrow-rs/pull/7889#discussion_r2200978216


##########
arrow-avro/src/codec.rs:
##########
@@ -61,9 +61,25 @@ impl AvroDataType {
     }
 
     /// Returns an arrow [`Field`] with the given name
+    #[cfg(feature = "canonical_extension_types")]
     pub fn field_with_name(&self, name: &str) -> Field {
-        let d = self.codec.data_type();
-        Field::new(name, d, 
self.nullability.is_some()).with_metadata(self.metadata.clone())
+        let nullable = self.nullability.is_some();
+        let data_type = self.codec.data_type();
+        let field = match self.codec {
+            Codec::Uuid => Field::new(name, data_type, nullable)
+                .with_extension_type(arrow_schema::extension::Uuid),
+            _ => Field::new(name, data_type, nullable),
+        };
+        field.with_metadata(self.metadata.clone())
+    }
+
+    /// Returns an arrow [`Field`] with the given name
+    #[cfg(not(feature = "canonical_extension_types"))]

Review Comment:
   That's a much cleaner approach. I went ahead and pushed those changes as 
well.



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