try {
            // clear queue
            urlQueueService.clearCache();
            urlQueueService.delete(sid);
        } catch (final Exception e) {
            logger.warn("Failed to delete UrlQueue: sessionId={}", sid, e);
        }

        try {
            // clear
            dataService.delete(sid);
        } catch (final Exception e) {

        }
        try {
            urlQueueService.delete(sessionId);
        } catch (final Exception e) {
            logger.warn("Failed to delete UrlQueue: sessionId={}", sessionId, e);
        }
        try {
            dataService.delete(sessionId);
        } catch (final Exception e) {