public int getParallelTopologyTaskCreationThreadPoolSize() {
    try {
      return Integer.parseInt(getProperty(TOPOLOGY_TASK_PARALLEL_CREATION_THREAD_COUNT));
    } catch (NumberFormatException e) {
      return TOPOLOGY_TASK_PARALLEL_CREATION_THREAD_COUNT.getDefaultValue();
    }
  }
@return the number of threads to use for parallel topology task creation if enabled
ambari-server/src/main/java/org/apache/ambari/server/configuration/Configuration.java