viirya commented on code in PR #3529:
URL: https://github.com/apache/arrow-rs/pull/3529#discussion_r1070362767


##########
arrow-data/src/data.rs:
##########
@@ -245,18 +245,58 @@ pub(crate) fn into_buffers(
 /// An generic representation of Arrow array data which encapsulates common 
attributes and
 /// operations for Arrow array. Specific operations for different arrays types 
(e.g.,
 /// primitive, list, struct) are implemented in `Array`.
+///
+/// # Memory Layout
+///
+/// `ArrayData` has references to one or more underlying data buffers
+/// and optional child ArrayDatas, depending on type as illustrated
+/// below. Bitmaps are not shown for similicity but they are stored
+/// similiarly to the buffers.

Review Comment:
   ```suggestion
   /// `ArrayData` has references to one or more underlying data buffers
   /// and optional child ArrayDatas, depending on type as illustrated
   /// below. Bitmaps are not shown for simplicity but they are stored
   /// similarly to the buffers.
   ```



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