private void shutdownMiniDfs() {
      if(miniDfs != null) {
        miniDfs.shutdown();
      }
  }
Tests DDL with remote metastore service and second namenode (HIVE-6374)
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/TestDDLWithRemoteMetastoreSecondNamenode.java