@Test
public void testMkNodeAlreadyExists() throws IOException {

  System.out.println("pre-create test path");
  fs.mkdirs(new Path("test/registryTestNode"));
  System.out.println(
      "Try to mknode existing path -- should be noop and return false");
  Assert.assertFalse(registry.mknode("test/registryTestNode", true));
  Assert.assertFalse(registry.mknode("test/registryTestNode", false));
}