// @Test
public void testFifoScheduler() throws Exception {
LOG.info("--- START: testFifoScheduler ---");
final int GB = 1024;
// Register node1
String host_0 = "host_0";
org.apache.hadoop.yarn.server.resourcemanager.NodeManager nm_0 =
registerNode(host_0, 1234, 2345, NetworkTopology.DEFAULT_RACK, 4 * GB);
nm_0.heartbeat();
// Register node2
String host_1 = "host_1";
org.apache.hadoop.yarn.server.resourcemanager.NodeManager nm_1 =
registerNode(host_1, 1234, 2345, NetworkTopology.DEFAULT_RACK, 2 * GB);
nm_1.heartbeat();
// ResourceRequest priorities
Priority priority_0 = org.apache.hadoop.yarn.server.resourcemanager.resource.Priority.create(0);
Priority priority_1 = org.apache.hadoop.yarn.server.resourcemanager.resource.Priority.create(1);
// Submit an application
Application application_0 = new Application("user_0", resourceManager);
application_0.submit();
application_0.addNodeManager(host_0, 1234, nm_0);
application_0.addNodeManager(host_1, 1234, nm_1);
Resource capability_0_0 = Resources.createResource(GB);
application_0.addResourceRequestSpec(priority_1, capability_0_0);
Resource capability_0_1 = Resources.createResource(2 * GB);
application_0.addResourceRequestSpec(priority_0, capability_0_1);
Task task_0_0 = new Task(application_0, priority_1, new String[] {host_0, host_1});
application_0.addTask(task_0_0);
// Submit another application
Application application_1 = new Application("user_1", resourceManager);
application_1.submit();
application_1.addNodeManager(host_0, 1234, nm_0);
application_1.addNodeManager(host_1, 1234, nm_1);
Resource capability_1_0 = Resources.createResource(3 * GB);
application_1.addResourceRequestSpec(priority_1, capability_1_0);
Resource capability_1_1 = Resources.createResource(4 * GB);
application_1.addResourceRequestSpec(priority_0, capability_1_1);
Task task_1_0 = new Task(application_1, priority_1, new String[] {host_0, host_1});
application_1.addTask(task_1_0);
// Send resource requests to the scheduler
LOG.info("Send resource requests to the scheduler");
application_0.schedule();
application_1.schedule();
// Send a heartbeat to kick the tires on the Scheduler
LOG.info(
"Send a heartbeat to kick the tires on the Scheduler... "
+ "nm0 -> task_0_0 and task_1_0 allocated, used=4G "
+ "nm1 -> nothing allocated");
nm_0.heartbeat(); // task_0_0 and task_1_0 allocated, used=4G
nm_1.heartbeat(); // nothing allocated
// Get allocations from the scheduler
application_0.schedule(); // task_0_0
checkApplicationResourceUsage(GB, application_0);
application_1.schedule(); // task_1_0
checkApplicationResourceUsage(3 * GB, application_1);
nm_0.heartbeat();
nm_1.heartbeat();
checkNodeResourceUsage(4 * GB, nm_0); // task_0_0 (1G) and task_1_0 (3G)
checkNodeResourceUsage(0 * GB, nm_1); // no tasks, 2G available
LOG.info("Adding new tasks...");
Task task_1_1 = new Task(application_1, priority_1, new String[] {RMNode.ANY});
application_1.addTask(task_1_1);
Task task_1_2 = new Task(application_1, priority_1, new String[] {RMNode.ANY});
application_1.addTask(task_1_2);
Task task_1_3 = new Task(application_1, priority_0, new String[] {RMNode.ANY});
application_1.addTask(task_1_3);
application_1.schedule();
Task task_0_1 = new Task(application_0, priority_1, new String[] {host_0, host_1});
application_0.addTask(task_0_1);
Task task_0_2 = new Task(application_0, priority_1, new String[] {host_0, host_1});
application_0.addTask(task_0_2);
Task task_0_3 = new Task(application_0, priority_0, new String[] {RMNode.ANY});
application_0.addTask(task_0_3);
application_0.schedule();
// Send a heartbeat to kick the tires on the Scheduler
LOG.info("Sending hb from " + nm_0.getHostName());
nm_0.heartbeat(); // nothing new, used=4G
LOG.info("Sending hb from " + nm_1.getHostName());
nm_1.heartbeat(); // task_0_3, used=2G
// Get allocations from the scheduler
LOG.info("Trying to allocate...");
application_0.schedule();
checkApplicationResourceUsage(3 * GB, application_0);
application_1.schedule();
checkApplicationResourceUsage(3 * GB, application_1);
nm_0.heartbeat();
nm_1.heartbeat();
checkNodeResourceUsage(4 * GB, nm_0);
checkNodeResourceUsage(2 * GB, nm_1);
// Complete tasks
LOG.info("Finishing up task_0_0");
application_0.finishTask(task_0_0); // Now task_0_1
application_0.schedule();
application_1.schedule();
nm_0.heartbeat();
nm_1.heartbeat();
checkApplicationResourceUsage(3 * GB, application_0);
checkApplicationResourceUsage(3 * GB, application_1);
checkNodeResourceUsage(4 * GB, nm_0);
checkNodeResourceUsage(2 * GB, nm_1);
LOG.info("Finishing up task_1_0");
application_1.finishTask(task_1_0); // Now task_0_2
application_0.schedule(); // final overcommit for app0 caused here
application_1.schedule();
nm_0.heartbeat(); // final overcommit for app0 occurs here
nm_1.heartbeat();
checkApplicationResourceUsage(4 * GB, application_0);
checkApplicationResourceUsage(0 * GB, application_1);
// checkNodeResourceUsage(1*GB, nm_0); // final over-commit -> rm.node->1G, test.node=2G
checkNodeResourceUsage(2 * GB, nm_1);
LOG.info("Finishing up task_0_3");
application_0.finishTask(task_0_3); // No more
application_0.schedule();
application_1.schedule();
nm_0.heartbeat();
nm_1.heartbeat();
checkApplicationResourceUsage(2 * GB, application_0);
checkApplicationResourceUsage(0 * GB, application_1);
// checkNodeResourceUsage(2*GB, nm_0); // final over-commit, rm.node->1G, test.node->2G
checkNodeResourceUsage(0 * GB, nm_1);
LOG.info("Finishing up task_0_1");
application_0.finishTask(task_0_1);
application_0.schedule();
application_1.schedule();
nm_0.heartbeat();
nm_1.heartbeat();
checkApplicationResourceUsage(1 * GB, application_0);
checkApplicationResourceUsage(0 * GB, application_1);
LOG.info("Finishing up task_0_2");
application_0.finishTask(task_0_2); // now task_1_3 can go!
application_0.schedule();
application_1.schedule();
nm_0.heartbeat();
nm_1.heartbeat();
checkApplicationResourceUsage(0 * GB, application_0);
checkApplicationResourceUsage(4 * GB, application_1);
LOG.info("Finishing up task_1_3");
application_1.finishTask(task_1_3); // now task_1_1
application_0.schedule();
application_1.schedule();
nm_0.heartbeat();
nm_1.heartbeat();
checkApplicationResourceUsage(0 * GB, application_0);
checkApplicationResourceUsage(3 * GB, application_1);
LOG.info("Finishing up task_1_1");
application_1.finishTask(task_1_1);
application_0.schedule();
application_1.schedule();
nm_0.heartbeat();
nm_1.heartbeat();
checkApplicationResourceUsage(0 * GB, application_0);
checkApplicationResourceUsage(3 * GB, application_1);
LOG.info("--- END: testFifoScheduler ---");
}