zeroshade commented on code in PR #35628:
URL: https://github.com/apache/arrow/pull/35628#discussion_r1204757640


##########
format/Message.fbs:
##########
@@ -99,6 +99,12 @@ table RecordBatch {
 
   /// Optional compression of the message body
   compression: BodyCompression;
+
+  /// Some types such as Utf8View are represented using a variable number of 
buffers.
+  /// For each such Field in the pre-ordered flattened logical schema, there 
will be
+  /// an entry in variadicCounts to indicate the number of extra buffers which 
belong
+  /// to that Field.
+  variadicCounts: [long];

Review Comment:
   I'm mostly thinking that we should bump it because of the addition of the 
field to the RecordBatch table. But that's a good point. Most of the previous 
version changes (like from V4 -> V5) were also backwards compatible.



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