@AfterClass
  public static void afterClass() throws Exception {
    HRegionServer.TEST_SKIP_REPORTING_TRANSITION = false;
    if (table != null) {
      table.close();
    }
    HTU.shutdownMiniCluster();
  }
Flush the given region in the mini cluster. Since no master, we cannot use HBaseAdmin.flush()
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerNoMaster.java