job.obtainNewReduceTask(taskTrackerStatus, numTaskTrackers, taskTrackerManager.getNumberOfUniqueHosts() );
job.obtainNewReduceTask(taskTrackerStatus, numTaskTrackers, taskTrackerManager.getNumberOfUniqueHosts() );
Task t = job.obtainNewReduceTask(taskTracker, numTaskTrackers, taskTrackerManager.getNumberOfUniqueHosts()); if (t != null) {
task = job.obtainNewReduceTask(taskTrackerStatus, numTaskTrackers, taskTrackerManager.getNumberOfUniqueHosts());
task = job.obtainNewReduceTask(taskTrackerStatus, numTaskTrackers, taskTrackerManager.getNumberOfUniqueHosts());
task = job.obtainNewReduceTask(taskTracker, numTaskTrackers, taskTrackerManager.getNumberOfUniqueHosts());