[GitHub] [iceberg] rdblue commented on a change in pull request #2167: Fix for Conversion of Parquet ByteArray to Iceberg Schema

[GitBox <gi...@apache.org>]

rdblue commented on a change in pull request #2167:
URL: https://github.com/apache/iceberg/pull/2167#discussion_r571340787



##########
File path: parquet/src/main/java/org/apache/iceberg/parquet/TypeWithSchemaVisitor.java
##########
@@ -63,10 +63,12 @@
             Preconditions.checkArgument(group.getFieldCount() == 1,
                 "Invalid list: does not contain single repeated field: %s", group);
 
-            GroupType repeatedElement = group.getFields().get(0).asGroupType();
+            Type repeatedElement = group.getFields().get(0);
+
             Preconditions.checkArgument(repeatedElement.isRepetition(Type.Repetition.REPEATED),
                 "Invalid list: inner group is not repeated");
-            Preconditions.checkArgument(repeatedElement.getFieldCount() <= 1,
+            Preconditions.checkArgument(repeatedElement.isPrimitive() ||
+                    repeatedElement.asGroupType().getFieldCount() <= 1,

Review comment:
       Nit: it would be nice to keep the expression on one line, wrapping after `checkArgument(`




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