edponce commented on code in PR #12055:
URL: https://github.com/apache/arrow/pull/12055#discussion_r849621397
##########
cpp/src/arrow/chunked_array.cc:
##########
@@ -44,18 +45,20 @@ class MemoryPool;
ChunkedArray::ChunkedArray(ArrayVector chunks, std::shared_ptr<DataType> type)
: chunks_(std::move(chunks)), type_(std::move(type)) {
- length_ = 0;
- null_count_ = 0;
-
if (type_ == nullptr) {
ARROW_CHECK_GT(chunks_.size(), 0)
<< "cannot construct ChunkedArray from empty vector and omitted type";
type_ = chunks_[0]->type();
}
+
+ length_ = 0;
+ null_count_ = 0;
Review Comment:
I found [this PR's conversation](https://github.com/apache/arrow/pull/3267)
touches on this topic.
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