@Test
public void testRelockLock() throws InterruptedException, IOException {

  final LockingManagement memoryLockManager = new MemoryLockManager("default");
  final DefaultTransaction t1 = new DefaultTransaction();
  memoryLockManager.lock(t1, "f8");
  memoryLockManager.lock(t1, "f8");
  t1.commit();
  t1.close();
}