jhorstmann commented on a change in pull request #8663:
URL: https://github.com/apache/arrow/pull/8663#discussion_r523440049
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File path: rust/arrow/src/array/array_union.rs
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@@ -232,7 +231,7 @@ impl UnionArray {
assert!(index - self.offset() < self.len());
if self.is_dense() {
let valid_slots = match self.data.null_buffer() {
- Some(b) => bit_util::count_set_bits_offset(b.data(), 0, index),
+ Some(b) => b.count_set_bits_offset(0, index),
Review comment:
Oh, I got it, the union format actually changed and deprecated the use
of a null bitmap:
https://github.com/apache/arrow/commit/6df862096c796f438c1b6cf054f51e2e2228b368#
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