private void verifyKillAppSuccess(
      String submitter, String killer, String queueName, boolean setupACLs) throws Exception {
    ApplicationId applicationId = submitAppAndGetAppId(submitter, queueName, setupACLs);

    final KillApplicationRequest finishAppRequest =
        KillApplicationRequest.newInstance(applicationId);

    ApplicationClientProtocol ownerClient = getRMClientForUser(killer);

    // Kill app as killer
    ownerClient.forceKillApplication(finishAppRequest);
    resourceManager.waitForState(applicationId, RMAppState.KILLED);
  }
  private void verifyKillAppFailure(
      String submitter, String killer, String queueName, boolean setupACLs) throws Exception {

    ApplicationId applicationId = submitAppAndGetAppId(submitter, queueName, setupACLs);

    final KillApplicationRequest finishAppRequest =
        KillApplicationRequest.newInstance(applicationId);

    ApplicationClientProtocol killerClient = getRMClientForUser(killer);

    // Kill app as the killer
    try {
      killerClient.forceKillApplication(finishAppRequest);
      Assert.fail("App killing by the enemy should fail!!");
    } catch (YarnException e) {
      LOG.info("Got exception while killing app as the enemy", e);
      Assert.assertTrue(
          e.getMessage()
              .contains(
                  "User " + killer + " cannot perform operation MODIFY_APP on " + applicationId));
    }

    getRMClientForUser(submitter).forceKillApplication(finishAppRequest);
  }