// Wait until the crawler starts (with exponential backoff)
        while (count < 1500 && !isRunning) {
            ThreadUtil.sleep(sleepTime);
            count++;
            final Map<String, Object> scheduler = getSchedulerItem(namePrefix);
            assertTrue(scheduler.containsKey("running"));
            isRunning = (Boolean) scheduler.get("running");

            // Exponential backoff: gradually increase sleep time up to 300ms