@Override
 protected void tearDown() throws Exception {
   super.tearDown();
   FileUtil.cleanFolder(new File(metaStore.getRootFolder()).getParentFile(), true);
 }
 public void test() throws Exception {
   super.testFunctionality(metaStore);
 }
 @Override
 protected void setUp() throws Exception {
   super.setUp();
   metaStore = createMetaStore();
 }