public static Boolean isVolatile() {
   if (!Bootstrap.isFinished() || BootstrapArgs.isInitializeSystem()) {
     return false;
   } else if (!Hosts.isCoordinator() && BootstrapArgs.isCloudController()) {
     return !isSynchronized() || !activeHosts.get().containsAll(hostDatabases.get());
   } else if (!activeHosts.get().equals(hostDatabases.get())) {
     return true;
   } else {
     return !Hosts.list(FILTER_SYNCING_DBS).isEmpty();
   }
 }
 @Override
 public Set<String> get() {
   Set<String> hosts = DBHOSTS.get();
   Set<String> union = Sets.newHashSet();
   Set<String> intersection = Sets.newHashSet(hosts);
   Logs.extreme().debug("ActiveHostSet: universe of db hosts: " + hosts);
   for (String ctx : PersistenceContexts.list()) {
     try {
       Set<String> activeDatabases = Databases.lookup(ctx, 0).getactiveDatabases();
       if (BootstrapArgs.isCloudController()) {
         activeDatabases.add(
             Internets
                 .localHostIdentifier()); // GRZE: use Internets.localHostIdentifier() which is
                                          // static, rather than the Hosts reference as it is
                                          // stateful
       }
       union.addAll(activeDatabases);
       intersection.retainAll(activeDatabases);
     } catch (Exception ex) {
     }
   }
   Logs.extreme().debug("ActiveHostSet: union of activated db connections: " + union);
   Logs.extreme()
       .debug(
           "ActiveHostSet: intersection of db hosts and activated db connections: "
               + intersection);
   boolean dbVolatile = !hosts.equals(intersection);
   String msg =
       String.format(
           "ActiveHostSet: %-14.14s %s%s%s",
           dbVolatile ? "volatile" : "synchronized",
           hosts,
           dbVolatile ? "!=" : "=",
           intersection);
   if (dbVolatile) {
     if (last.compareAndSet(false, dbVolatile)) {
       LOG.warn(msg);
     } else {
       LOG.debug(msg);
     }
   } else {
     if (last.compareAndSet(true, dbVolatile)) {
       LOG.warn(msg);
     } else {
       Logs.extreme().info(msg);
     }
   }
   return intersection;
 }