}
                  },
                  service);
        } else if (i % DIRECT_EXECUTIONS_PER_THREAD == DIRECT_EXECUTIONS_PER_THREAD - 1) {
          // When at max depth, record stack trace depth
          lengthChecks.add(
              serializer.submit(
                  new Callable<Integer>() {
                    @Override
                    public Integer call() {

        assertEquals("{labels.createdBy}", FessLabels.LABELS_CREATED_BY);
        assertEquals("{labels.createdTime}", FessLabels.LABELS_CREATED_TIME);
        assertEquals("{labels.depth}", FessLabels.LABELS_DEPTH);
        assertEquals("{labels.excludedPaths}", FessLabels.LABELS_EXCLUDED_PATHS);
        assertEquals("{labels.excludedUrls}", FessLabels.LABELS_EXCLUDED_URLS);