for(int i = 0; i < maximumConcurrentJobCount; i++) {
if(runningQueue[i] == null) {
runningJobIds[i] = job.getUniqueId();
runningQueue[i] = new Thread(new JobThread(runScheduler, job));
runningQueue[i].start();
runningJobCount++;
logger.info("run_count = " + runningJobCount);
return true;
}