protected boolean drainQueue(String queueName)
protected void drainQueue(String queueName) throws PerfException
   protected boolean drainQueue(String queueName)   {      Job drainJob = createDefaultDrainJob(queueName);      JobResult res = runJob(drainJob);      if (res.failed)      {         log.error("Failed to drain queue", res.throwables[0]);         return false;      }      return true;   }