lidavidm commented on code in PR #13200:
URL: https://github.com/apache/arrow/pull/13200#discussion_r878294468
##########
java/dataset/src/main/java/org/apache/arrow/dataset/jni/DirectReservationListener.java:
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@@ -87,11 +87,40 @@ public void unreserve(long size) {
public long getCurrentDirectMemReservation() {
try {
final Class<?> classBits = Class.forName("java.nio.Bits");
- final Field f = classBits.getDeclaredField("reservedMemory");
+ final Field f;
+ Field fBaseOnJDKVersion;
Review Comment:
Nit but I would just use `f` and make it non-final here no need to
complicate it with extra assignments
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