nevi-me commented on a change in pull request #9329:
URL: https://github.com/apache/arrow/pull/9329#discussion_r597200305



##########
File path: rust/arrow/src/array/array.rs
##########
@@ -56,11 +55,13 @@ pub trait Array: fmt::Debug + Send + Sync + JsonEqual {
     /// ```
     fn as_any(&self) -> &Any;
 
-    /// Returns a reference-counted pointer to the underlying data of this 
array.
-    fn data(&self) -> ArrayDataRef;
+    /// Returns a reference to the underlying data of this array.
+    fn data(&self) -> &ArrayData;

Review comment:
       @yordan-pavlov I think it's safer to deprecate `data()`, then remove it 
later. We still use it a lot in the codebase, but it's often more performant to 
use `array_ref()`, so returning `ArrayData` doesn't guide users on a faster 
path.




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