code: public static void dumpClusters(Cluster currentCluster,
                                      Cluster finalCluster,
                                      String outputDirName) {
          dumpClusters(currentCluster, finalCluster, outputDirName, "");
      }
docs: Given the current and final cluster dumps it into the output directory
  
  @param currentCluster Initial cluster metadata
  @param finalCluster Final cluster metadata
  @param outputDirName Output directory where to dump this file
  @throws IOException