public void stopRetryFailedTasksService() {
    synchronized (scheduleMonitor) {
      if (currentFailedTasksRetryThreadFuture != null) {
        currentFailedTasksRetryThreadFuture.cancel(false);
        currentFailedTasksRetryThreadFuture = null;
        LOGGER.info("RetryFailMissions service is stopped successfully.");
      }
    }
  }
Stop the retry fail missions service
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/manager/RetryFailedTasksThread.java