@Override
    public void run() {
      LOG.warn("Aborting region server timed out, terminating forcibly"
        + " and does not wait for any running shutdown hooks or finalizers to finish their work."
        + " Thread dump to stdout.");
      Threads.printThreadInfo(System.out, "Zombie HRegionServer");
      Runtime.getRuntime().halt(1);
    }
Force to terminate region server when abort timeout.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java