lidavidm commented on code in PR #43903:
URL: https://github.com/apache/arrow/pull/43903#discussion_r1741576866


##########
java/memory/memory-core/src/main/java/org/apache/arrow/memory/rounding/DefaultRoundingPolicy.java:
##########
@@ -34,13 +34,13 @@ public class DefaultRoundingPolicy implements 
RoundingPolicy {
    *
    * <p>It was copied from {@link io.netty.buffer.PooledByteBufAllocator}.
    */
-  private static final int MIN_PAGE_SIZE = 4096;
+  private static final long MIN_PAGE_SIZE = 4096;
 
-  private static final int MAX_CHUNK_SIZE = (int) (((long) Integer.MAX_VALUE + 
1) / 2);
+  private static final long MAX_CHUNK_SIZE = Long.MAX_VALUE / 2;

Review Comment:
   For now let's keep it as Integer.MAX_VALUE so the value is same as before



##########
java/memory/memory-core/src/main/java/org/apache/arrow/memory/AllocationReservation.java:
##########


Review Comment:
   I would still expect to see `long getSizeLong`



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