private String getAuthorizationProvider(){
        return DefaultHiveAuthorizationProvider.class.getName();
    }
TestMetastoreClientSideAuthorizationProvider : Simple base test for Metastore client side
Authorization Providers. By default, tests DefaultHiveAuthorizationProvider
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/security/TestMetastoreClientSideAuthorizationProvider.java