code: public static void sleep(final long durationInMillis) {
  		try {
  			Thread.sleep(durationInMillis);
  		} catch (InterruptedException e) {
  			LOG.trace("", e);
  			Thread.currentThread().interrupt();
  		}
  	}
docs: sleep 等待，单位为毫秒。已捕捉并处理 InterruptedException。
  
  @param durationInMillis
  等待毫秒数