conf.setLong("mapred.fairscheduler.locality.delay.node", 5000);
conf.setLong("mapred.fairscheduler.locality.delay.rack", 10000);
conf.set("mapred.job.tracker", "localhost:0");
conf.set("mapred.job.tracker.http.address", "0.0.0.0:0");
taskTrackerManager = new FakeTaskTrackerManager(numRacks, numNodesPerRack);
clock = new FakeClock();
try {
jobTracker = new JobTracker(conf, clock);
jobTracker.setSafeModeInternal(JobTracker.SafeModeAction.SAFEMODE_ENTER);
jobTracker.initializeFilesystem();
jobTracker.setSafeModeInternal(JobTracker.SafeModeAction.SAFEMODE_LEAVE);