public int getRenewDelegationTokenFailedRetrieved() {
    return numRenewDelegationTokenFailedRetrieved.value();
  }
@Test
  public void testRenewDelegationTokenRetrievedFailed() {
    long totalBadBefore = metrics.getRenewDelegationTokenFailedRetrieved();
    badSubCluster.getRenewDelegationTokenFailed();
    Assert.assertEquals(totalBadBefore + 1,
        metrics.getRenewDelegationTokenFailedRetrieved());
  }