conf.setInt(MRJobConfig.MAP_MEMORY_MB, mapMemMb);
conf.setInt(MRJobConfig.REDUCE_MEMORY_MB, reduceMemMb);
app.setClusterInfo(new ClusterInfo(BuilderUtils
.newResource(minContainerSize), BuilderUtils.newResource(10240)));
Job job = app.submit(conf);
app.waitForState(job, JobState.RUNNING);
Map<TaskId, Task> tasks = job.getTasks();
Assert.assertEquals("Num tasks is not correct", 2, tasks.size());
Iterator<Task> taskIter = tasks.values().iterator();
Task mTask = taskIter.next();