@After
  public void after() throws Exception {
    TEST_UTIL.shutdownMiniHBaseCluster();
    TEST_UTIL.getTestFileSystem().delete(CommonFSUtils.getRootDir(TEST_UTIL.getConfiguration()),
      true);
    ZKUtil.deleteNodeRecursively(TEST_UTIL.getZooKeeperWatcher(), "/hbase");
  }
Base class for testing distributed log splitting.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/AbstractTestDLS.java