nevi-me commented on pull request #8608:
URL: https://github.com/apache/arrow/pull/8608#issuecomment-723437224
> I have a question related to why do we use a `Box<>` instead of just
putting it into the stack, but other parts of the code have that, and thus
makes sense to keep it as is.
We need some indirection to break the potential infinite recursion
```rust
error[E0072]: recursive type `datatypes::Field` has infinite size
--> arrow\src\datatypes.rs:188:1
|
188 | pub struct Field {
| ^^^^^^^^^^^^^^^^ recursive type has infinite size
189 | name: String,
190 | data_type: DataType,
| ------------------- recursive without indirection
|
= help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point
to make `datatypes::Field` representable
```
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