@Override
    public void run(HiveSessionHookContext sessionHookContext) throws HiveSQLException {
      sessionHookContext.getSessionConf().set(TEST_TAG, TEST_TAG_VALUE);
    }
This class is cloned from TestJdbcWithMiniMR, except use Namenode HA.
itests/hive-unit/src/test/java/org/apache/hive/jdbc/TestJdbcWithMiniHA.java