private void invokePut(VM whichVM) {
    if (whichVM == null) {
      doPut();
    } else {
      whichVM.invoke(ClearRvvLockingDUnitTest::doPut);
    }
  }
Test class to verify proper RVV locking interaction between entry operations such as PUT/REMOVE
and the CLEAR region operation

GEODE-599: After an operation completed, it would unlock the RVV. This was occurring before the
operation was distributed to other members which created a window in which another operation
could be performed prior to that operation being distributed.

The fix for GEODE-599 was to not release the lock until after distributing the operation to the
other members.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/ClearRvvLockingDUnitTest.java