tustvold commented on a change in pull request #1214:
URL: https://github.com/apache/arrow-rs/pull/1214#discussion_r789070642
##########
File path: parquet/src/arrow/levels.rs
##########
@@ -711,12 +711,11 @@ impl LevelInfo {
((0..=(len as i64)).collect(), array_mask)
}
DataType::List(_) | DataType::Map(_, _) => {
- let data = array.data();
- let offsets = unsafe { data.buffers()[0].typed_data::<i32>() };
+ let offsets = unsafe {
array.data().buffers()[0].typed_data::<i32>() };
let offsets = offsets
.to_vec()
.into_iter()
- .skip(offset)
+ .skip(array.offset() + offset)
Review comment:
This was a pre-existing bug, that people would have run into if they
wrote a sliced RecordBatch
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