rdblue commented on code in PR #13445:
URL: https://github.com/apache/iceberg/pull/13445#discussion_r2308262412


##########
spark/v4.0/spark/src/main/java/org/apache/iceberg/spark/data/ParquetWithSparkSchemaVisitor.java:
##########
@@ -182,18 +186,18 @@ private static <T> T visitField(
 
   private static <T> List<T> visitFields(
       StructType struct, GroupType group, ParquetWithSparkSchemaVisitor<T> 
visitor) {
-    StructField[] sFields = struct.fields();
-    Preconditions.checkArgument(
-        sFields.length == group.getFieldCount(), "Structs do not match: %s and 
%s", struct, group);
+    Map<String, StructField> sFieldsByName =

Review Comment:
   I reviewed this area and suggested an alternative on the other thread below. 
I think we should stick to using indexes.



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