lidavidm commented on a change in pull request #11127:
URL: https://github.com/apache/arrow/pull/11127#discussion_r706139239
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File path: cpp/src/arrow/compute/kernels/vector_nested.cc
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@@ -76,6 +76,24 @@ struct ListParentIndicesArray {
Status Visit(const LargeListType& type) { return VisitList(type); }
+ Status Visit(const FixedSizeListType& type) {
+ const int32_t slot_length = type.list_size();
+ const int64_t values_length = slot_length * (input->length -
input->GetNullCount());
Review comment:
GetNullCount computes the nulls, yes - look at the implementation. If it
were purely a getter it would be called `null_count`.
https://github.com/apache/arrow/blob/3bbec3f31ca16dd347b9ec88bd2b38fbf1a403b9/cpp/src/arrow/array/data.cc#L117-L129
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