protected void mergeAndExportJobs() {
Iterator<Map.Entry<String, Job>> iter = jobs.entrySet().iterator();
while(iter.hasNext()) {
Job job = iter.next().getValue();
if(job.getRebuildTag() == 2) {
job.rebuild(0, null, this);
continue;
}
if (!job.getJobTimeOut().get())
{
// 需要合并该job的task