RegionServer will fail to report new active Hmaster until HMaster/RegionServer failover

  boolean refresh = false; // for the first time, use cached data
    RegionServerStatusService.BlockingInterface intf = null;
    boolean interrupted = false;
    try {
      while (keepLooping()) {
        sn = this.masterAddressTracker.getMasterAddress(refresh);
        if (sn == null) {
          if (!keepLooping()) {
            // give up with no connection.
            LOG.debug("No master found and cluster is stopped; bailing out");
            return null;
          }
          if (System.currentTimeMillis() > (previousLogTime + 1000)) {
            LOG.debug("No master found; retry");
            previousLogTime = System.currentTimeMillis();
          }
          refresh = true; // let's try pull it from ZK directly
          if (sleep(200)) {
            interrupted = true;
          }
          continue;
        }