// set service-level authorization security policy
if (serviceAuthEnabled =
conf.getBoolean(
ServiceAuthorizationManager.SERVICE_AUTHORIZATION_CONFIG, false)) {
PolicyProvider policyProvider =
(PolicyProvider)(ReflectionUtils.newInstance(
conf.getClass(PolicyProvider.POLICY_PROVIDER_CONFIG,
HDFSPolicyProvider.class, PolicyProvider.class),
conf));
SecurityUtil.setPolicy(new ConfiguredPolicy(conf, policyProvider));