WillAyd commented on code in PR #48414:
URL: https://github.com/apache/arrow/pull/48414#discussion_r2619847303
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cpp/src/arrow/array/array_nested.h:
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@@ -720,8 +722,8 @@ class ARROW_EXPORT StructArray : public Array {
private:
// For caching boxed child data
- // XXX This is not handled in a thread-safe manner.
- mutable ArrayVector boxed_fields_;
+ struct ARROW_NO_EXPORT Impl;
Review Comment:
Why is this required to use `ARROW_NO_EXPORT`?
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