@After
  public void tearDown() {
    DistributionMessageObserver.setInstance(null);
    invokeInEveryVM(() -> {
      DistributionMessageObserver.setInstance(null);
    });
  }
Verifies that new bucket does not hang after requester crashes.

<p>
TRAC #41733: Hang in BucketAdvisor.waitForPrimaryMember
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/BucketCreationCrashRegressionTest.java