@Override
  public void stop(String why) {
    this.stopping = true;
    if (running.compareAndSet(true, false)) {
      LOG.info("Shutting down due to request '" + why + "'");
    }
  }
Basic mock region server services. Should only be instantiated by HBaseTestingUtility.b
hbase-server/src/main/java/org/apache/hadoop/hbase/MockRegionServerServices.java