alamb commented on code in PR #7446:
URL: https://github.com/apache/arrow-rs/pull/7446#discussion_r2080207311
##########
parquet/src/arrow/arrow_writer/mod.rs:
##########
@@ -1911,6 +1915,50 @@ mod tests {
roundtrip(batch, Some(SMALL_SIZE / 2));
}
+ #[test]
+ fn test_fixed_size_binary_in_dict() {
+ fn test_fixed_size_binary_in_dict_inner<K>()
+ where
+ K: ArrowDictionaryKeyType,
+ K::Native: FromPrimitive + ToPrimitive + TryFrom<u8>,
+ <<K as arrow_array::ArrowPrimitiveType>::Native as
TryFrom<u8>>::Error: std::fmt::Debug,
+ {
+ let field = Field::new(
+ "a",
+ DataType::Dictionary(
+ Box::new(K::DATA_TYPE),
+ Box::new(DataType::FixedSizeBinary(4)),
+ ),
+ false,
+ );
+ let schema = Schema::new(vec![field]);
+
+ let keys: Vec<K::Native> = vec![
+ K::Native::try_from(0u8).unwrap(),
+ K::Native::try_from(0u8).unwrap(),
+ K::Native::try_from(1u8).unwrap(),
+ ];
+ let keys = PrimitiveArray::<K>::from_iter_values(keys);
+ let values = FixedSizeBinaryArray::try_from_iter(
+ vec![vec![0, 0, 0, 0], vec![1, 1, 1, 1]].into_iter(),
+ )
+ .unwrap();
+
+ let data = DictionaryArray::<K>::new(keys, Arc::new(values));
+ let batch = RecordBatch::try_new(Arc::new(schema),
vec![Arc::new(data)]).unwrap();
+ roundtrip(batch, None);
Review Comment:
I verified this is doing a read/write round trip
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