viirya commented on code in PR #1632:
URL: https://github.com/apache/arrow-rs/pull/1632#discussion_r863025398
##########
arrow/src/array/array_union.rs:
##########
@@ -304,6 +304,24 @@ impl Array for UnionArray {
fn data(&self) -> &ArrayData {
&self.data
}
+
Review Comment:
I think so. For example, `ArrayData.is_null` returns false if its
`null_bitmap` is `None`. These values are not changed before/after this change.
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