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

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#349 opened on Mar 3, 2022 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 62/100

Issue type: Bug
Clarity: Clearly specified
Activity status: Stale
Tech stack: java
Domain: testing

Research direction

Start with TestReservationListener.java around testDirectReservationListener and run the Maven command shown in the report on the affected macOS/JVM setup. Inspect the java.nio.Bits field used for the direct-memory reservation and verify the test also passes in the referenced CI workflow.

Written by the indexing model from the issue text.

Description

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.}

Dominant language: Java
Stars: 95
Forks: 154
Avg merge: 2d 16h
Merged PRs (30d): 9

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