Zombie Master detector is not working

 status.setStatus("Initializing ZK system trackers");
 initializeZKBasedSystemTrackers();
 status.setStatus("Loading last flushed sequence id of regions");
 try {
 this.serverManager.loadLastFlushedSequenceIds();
 } catch (IOException e) {
 LOG.debug("Failed to load last flushed sequence id of regions"
 + " from file system", e);
 }
 // Set ourselves as active Master now our claim has succeeded up in zk.
 this.activeMaster = true;

 private void finishActiveMasterInitialization(MonitoredTask status) throws IOException,
 InterruptedException, KeeperException, ReplicationException {
 Thread zombieDetector = new Thread(new InitializationMonitor(this),
 "ActiveMasterInitializationMonitor-" + System.currentTimeMillis());
 zombieDetector.setDaemon(true);
 zombieDetector.start();

 @Override
 public void run() {
 try {
 while (!master.isStopped() && master.isActiveMaster()) {
 Thread.sleep(timeout);
 if (master.isInitialized()) {
 LOG.debug("Initialization completed within allotted tolerance. Monitor exiting.");
 } else {
 LOG.error("Master failed to complete initialization after " + timeout + "ms. Please"
 + " consider submitting a bug report including a thread dump of this process.");
 if (haltOnTimeout) {
 LOG.error("Zombie Master exiting. Thread dump to stdout");
 Threads.printThreadInfo(System.out, "Zombie HMaster");
 System.exit(-1);
 }
 }
 }
 } catch (InterruptedException ie) {
 LOG.trace("InitMonitor thread interrupted. Existing.");
 }
 }
 }