log.info("executor " + executorURL + " on-line and reset");
log.info("executor " + executorURL + " on-line");
   private void checkExecutors(Coordinator coordinator, List executorURLs) throws Exception   {      for(Iterator i = executorURLs.iterator(); i.hasNext(); )      {         String executorURL = (String)i.next();         try         {            log.debug("resetting " + executorURL);            coordinator.sendToExecutor(executorURL, new ResetRequest());            log.info("executor " + executorURL + " on-line and reset");         }         catch(Throwable e)         {            log.error("executor " + executorURL + " failed", e);            throw new Exception("executor check failed");         }      }   }