AlenkaF commented on code in PR #41757:
URL: https://github.com/apache/arrow/pull/41757#discussion_r1625744530
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cpp/src/arrow/array/array_nested.cc:
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@@ -836,24 +845,32 @@ Result<std::shared_ptr<Array>>
MapArray::FromArraysInternal(
using OffsetArrayType = typename TypeTraits<OffsetArrowType>::ArrayType;
const auto& typed_offsets = checked_cast<const OffsetArrayType&>(*offsets);
- auto buffers = BufferVector({nullptr, typed_offsets.values()});
+
+ BufferVector buffers;
+ int64_t null_count;
+ if (null_bitmap != nullptr) {
+ buffers = BufferVector({std::move(null_bitmap), typed_offsets.values()});
+ null_count = null_bitmap->size();
Review Comment:
Aha, I can look here and do something similar =)
https://github.com/apache/arrow/blob/524a463207fdb799b2cd784b7ef95052165882ec/cpp/src/arrow/array/data.cc#L210-L211
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