public boolean isTopologyResolved(long clusterId) {
    boolean isTopologyResolved = false;
    try {
      Cluster cluster = getController().getClusters().getClusterById(clusterId);

      // Check through the various cluster config versions that these transitioned through TopologyManager.INITIAL -> .... -> TopologyManager.TOPOLOGY_RESOLVED -> ....
      Map<String, Set<DesiredConfig>> allDesiredConfigsByType = cluster.getAllDesiredConfigVersions();

      for (String configType: allDesiredConfigsByType.keySet()) {
        Set<DesiredConfig> desiredConfigVersions = allDesiredConfigsByType.get(configType);

        SortedSet<DesiredConfig> desiredConfigsOrderedByVersion = new TreeSet<>(new Comparator<DesiredConfig>() {
          @Override
          public int compare(DesiredConfig o1, DesiredConfig o2) {
            if (o1.getVersion() < o2.getVersion()) {
              return -1;
            }

            if (o1.getVersion() > o2.getVersion()) {
              return 1;
            }

            return 0;
          }
        });

        desiredConfigsOrderedByVersion.addAll(desiredConfigVersions);

        int tagMatchState = 0; // 0 -> INITIAL -> tagMatchState = 1 -> TOPLOGY_RESOLVED -> tagMatchState = 2

        for (DesiredConfig config: desiredConfigsOrderedByVersion) {
          if (config.getTag().equals(TopologyManager.INITIAL_CONFIG_TAG) && tagMatchState == 0) {
            tagMatchState = 1;
          } else if (config.getTag().equals(TopologyManager.TOPOLOGY_RESOLVED_TAG) && tagMatchState == 1) {
            tagMatchState = 2;
            break;
          }
        }

        if (tagMatchState == 2) {
          isTopologyResolved = true;
          break;
        }
      }

    } catch (ClusterNotFoundException e) {
      LOG.info("Attempted to determine if configuration is topology resolved for a non-existent cluster: {}",
              clusterId);
    } catch (AmbariException e) {
      throw new RuntimeException(
              "Unable to determine if cluster config is topology resolved due to unknown error: " + e, e);
    }

    return isTopologyResolved;
  }
Verifies if the given cluster has at least one desired configuration transitioned through
TopologyManager.INITIAL -> .... -> TopologyManager.TOPOLOGY_RESOLVED -> ....
@param clusterId the identifier of the cluster to be checked
@return true if the cluster
ambari-server/src/main/java/org/apache/ambari/server/topology/AmbariContext.java