mapleFU commented on code in PR #43782:
URL: https://github.com/apache/arrow/pull/43782#discussion_r1946022935
##########
cpp/src/arrow/compute/kernels/scalar_cast_nested.cc:
##########
@@ -404,14 +400,20 @@ struct CastStruct {
int out_field_index = 0;
for (int field_index : fields_to_select) {
- const auto& target_type = out->type()->field(out_field_index++)->type();
+ const auto& target_field = out->type()->field(out_field_index++);
+ const auto& target_type = target_field->type();
if (field_index == kFillNullSentinel) {
ARROW_ASSIGN_OR_RAISE(auto nulls,
MakeArrayOfNull(target_type->GetSharedPtr(),
batch.length));
out_array->child_data.push_back(nulls->data());
} else {
const auto& values =
(in_array.child_data[field_index].ToArrayData()->Slice(
in_array.offset, in_array.length));
+ if (!target_field->nullable() && values->GetNullCount() > 0) {
Review Comment:
Yeah this might cause the null bitmap being counted, I think check nullable
would be faster than checking this if not neccessary
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
