tustvold commented on code in PR #2254:
URL: https://github.com/apache/arrow-rs/pull/2254#discussion_r934366110
##########
parquet/src/arrow/arrow_reader.rs:
##########
@@ -729,6 +730,87 @@ mod tests {
}
}
+ #[test]
+ fn test_decimal_nullable_struct() {
+ let decimals = Decimal128Array::from_iter_values([1, 2, 3, 4, 5, 6, 7,
8]);
+
+ let data = ArrayDataBuilder::new(ArrowDataType::Struct(vec![Field::new(
+ "decimals",
+ decimals.data_type().clone(),
+ false,
+ )]))
+ .len(8)
+ .null_bit_buffer(Some(Buffer::from(&[0b11101111])))
+ .child_data(vec![decimals.into_data()])
+ .build()
+ .unwrap();
+
+ let written = RecordBatch::try_from_iter([(
+ "struct",
+ Arc::new(StructArray::from(data)) as ArrayRef,
+ )])
+ .unwrap();
+
+ let mut buffer = Vec::with_capacity(1024);
+ let mut writer =
+ ArrowWriter::try_new(&mut buffer, written.schema(), None).unwrap();
+ writer.write(&written).unwrap();
+ writer.close().unwrap();
+
+ let read = ParquetFileArrowReader::try_new(Bytes::from(buffer))
+ .unwrap()
+ .get_record_reader(3)
+ .unwrap()
+ .collect::<ArrowResult<Vec<_>>>()
+ .unwrap();
+
+ assert_eq!(&written.slice(0, 3), &read[0]);
+ assert_eq!(&written.slice(3, 3), &read[1]);
+ assert_eq!(&written.slice(6, 2), &read[2]);
+ }
+
+ #[test]
+ #[ignore] // https://github.com/apache/arrow-rs/issues/2253
Review Comment:
Perhaps unsurprisingly, this is broken. :sweat_smile:
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