@Override
        public Map<HboxContainerId, ConcurrentHashMap<String, LinkedBlockingDeque<List<Long>>>>
                getContainersGpuUtilMetrics() {
            return containerListener.getContainersGpuUtilMetrics();
        }
Internal class for running application class
core/src/main/java/net/qihoo/hbox/AM/ApplicationMaster.java