.getNamesystem().getDelegationTokenSecretManager();
Token<DelegationTokenIdentifier> token = generateDelegationToken(
"SomeUser", "JobTracker");
//Fake renewer should not be able to renew
try {
dtSecretManager.cancelToken(token, "FakeCanceller");
Assert.fail("should have failed");
} catch (AccessControlException ace) {
// PASS
}
dtSecretManager.cancelToken(token, "JobTracker");