[Java] Problem to get current reservation of JVM direct memory on macOS Big Sur

TestReservationListener.java の testDirectReservationListener 付近から始め、報告に示されている Maven コマンドを影響を受ける macOS/JVM セットアップで実行します。ダイレクトメモリの予約に使用される java.nio.Bits のフィールドを調べ、参照されている CI ワークフローでもテストが成功することを確認します。

Hi Team,

Just compiling java dataset module it compile without problems but the test related to  get current reservation of JVM direct memory is failing on my local machine macOS Big Sur 11.5.2.

Command line:

 

mvn -Darrow.cpp.build.dir=../java-dist/lib clean install 

 

 

Test code:

 

/**
 * Get current reservation of jVM direct memory. Visible for testing.
 */
@VisibleForTesting
public long getCurrentDirectMemReservation() {
  try {
    final Class<?> classBits = Class.forName("java.nio.Bits");
     final Field f = classBits.getDeclaredField("reservedMemory");
    f.setAccessible(true);
    return ((AtomicLong) f.get(null)).get();
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
} 

 

 

Error message:

 

[ERROR] testDirectReservationListener  Time elapsed: 0.028 s  <<< ERROR!
java.lang.RuntimeException: java.lang.NoSuchFieldException: reservedMemory
        at org.apache.arrow.dataset.jni.TestReservationListener.testDirectReservationListener(TestReservationListener.java:50)
 

 

 

If I changed from classBits.getDeclaredField("reservedMemory") to 

classBits.getDeclaredField("RESERVED_MEMORY") all the test finished without problems. Seeing this way to obtain reserved memory on Jvm.java.

 

Consider: Current test on macOS finished ok on the ci workflows.

Reporter: David Dali Susanibar Arce / @davisusanibar

_{Note: This issue was originally created as ARROW-15834. Please see the migration documentation for further details.}