tustvold commented on code in PR #4226:
URL: https://github.com/apache/arrow-rs/pull/4226#discussion_r1195040927
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parquet/src/arrow/array_reader/list_array.rs:
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@@ -227,8 +228,13 @@ impl<OffsetSize: OffsetSizeTrait> ArrayReader for
ListArrayReader<OffsetSize> {
let list_data = unsafe { data_builder.build_unchecked() };
- let result_array = GenericListArray::<OffsetSize>::from(list_data);
- Ok(Arc::new(result_array))
+ let result_array: ArrayRef = match *list_data.data_type() {
+ ArrowType::FixedSizeList(_, _) => {
+ Arc::new(FixedSizeListArray::from(list_data))
Review Comment:
This is not correct, you are constructing a FixedSizeListArray from an
ArrayData that contains an offsets buffer. In particular this code needs to
verify that the values array is the right length. I'll see if I can't finish up
#3879 so that you can make use of that
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