ResourceScheduler rs = rm.getResourceScheduler();
SchedulerInfo sinfo;
if (rs instanceof CapacityScheduler) {
CapacityScheduler cs = (CapacityScheduler) rs;
CSQueue root = cs.getRootQueue();
sinfo = new CapacitySchedulerInfo(root);
} else if (rs instanceof FairScheduler) {
FairScheduler fs = (FairScheduler) rs;
sinfo = new FairSchedulerInfo(fs);
} else if (rs instanceof FifoScheduler) {
sinfo = new FifoSchedulerInfo(this.rm);