Dandandan commented on code in PR #9294:
URL: https://github.com/apache/arrow-rs/pull/9294#discussion_r2741412140
##########
arrow-array/src/array/primitive_array.rs:
##########
@@ -1467,13 +1468,14 @@ impl<T: ArrowPrimitiveType, Ptr:
Into<NativeAdapter<T>>> FromIterator<Ptr> for P
.collect();
let len = null_builder.len();
+ let maybe_nulls = null_builder.finish().map(|x|
x.into_inner().into_inner());
let data = unsafe {
ArrayData::new_unchecked(
T::DATA_TYPE,
len,
None,
- Some(null_builder.into()),
+ maybe_nulls,
Review Comment:
This makes sense, I think I saw heavy cloning in profiles even
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