RussellSpitzer commented on issue #1111:
URL: https://github.com/apache/iceberg/issues/1111#issuecomment-658406057
In TypeToSparkType it may also make sense to either throw an error when an
empty Struct in Spark is about to be created (since this will most likely break
catalyst) or just replace an empty Struct with a dummy one. Something like
```
if (fields.size() == 0) {
sparkFields.add(StructField.apply("EmptyStruct", DataTypes.BinaryType,
true, Metadata.empty()));
}
```
I did a quick test and this would clean up the error message but not inform
the user that something impossible was tried
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