コード例 #1
0
  @Test
  public void testPriorityWithPendingApplications() throws Exception {

    Configuration conf = new Configuration();
    conf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class, ResourceScheduler.class);
    // Set Max Application Priority as 10
    conf.setInt(YarnConfiguration.MAX_CLUSTER_LEVEL_APPLICATION_PRIORITY, 10);
    MockRM rm = new MockRM(conf);
    rm.start();

    Priority appPriority1 = Priority.newInstance(5);
    MockNM nm1 = rm.registerNode("127.0.0.1:1234", 8 * GB);
    RMApp app1 = rm.submitApp(1 * GB, appPriority1);

    // kick the scheduler, 1 GB given to AM1, remaining 7GB on nm1
    MockAM am1 = MockRM.launchAM(app1, rm, nm1);
    am1.registerAppAttempt();

    // kick the scheduler, 7 containers will be allocated for App1
    List<Container> allocated1 = am1.allocateAndWaitForContainers("127.0.0.1", 7, 1 * GB, nm1);

    Assert.assertEquals(7, allocated1.size());
    Assert.assertEquals(1 * GB, allocated1.get(0).getResource().getMemory());

    // check node report, 8 GB used (1 AM and 7 containers) and 0 GB available
    SchedulerNodeReport report_nm1 = rm.getResourceScheduler().getNodeReport(nm1.getNodeId());
    Assert.assertEquals(8 * GB, report_nm1.getUsedResource().getMemory());
    Assert.assertEquals(0 * GB, report_nm1.getAvailableResource().getMemory());

    // Submit the second app App2 with priority 7
    Priority appPriority2 = Priority.newInstance(7);
    RMApp app2 = rm.submitApp(1 * GB, appPriority2);

    // Submit the third app App3 with priority 8
    Priority appPriority3 = Priority.newInstance(8);
    RMApp app3 = rm.submitApp(1 * GB, appPriority3);

    // Submit the second app App4 with priority 6
    Priority appPriority4 = Priority.newInstance(6);
    RMApp app4 = rm.submitApp(1 * GB, appPriority4);

    // Only one app can run as AM resource limit restricts it. Kill app1,
    // If app3 (highest priority among rest) gets active, it indicates that
    // priority is working with pendingApplications.
    rm.killApp(app1.getApplicationId());

    // kick the scheduler, app3 (high among pending) gets free space
    MockAM am3 = MockRM.launchAM(app3, rm, nm1);
    am3.registerAppAttempt();

    // check node report, 1 GB used and 7 GB available
    report_nm1 = rm.getResourceScheduler().getNodeReport(nm1.getNodeId());
    Assert.assertEquals(1 * GB, report_nm1.getUsedResource().getMemory());
    Assert.assertEquals(7 * GB, report_nm1.getAvailableResource().getMemory());

    rm.stop();
  }
コード例 #2
0
  @Test
  public void testApplicationPriorityAllocation() throws Exception {

    Configuration conf = new Configuration();
    conf.setClass(YarnConfiguration.RM_SCHEDULER, CapacityScheduler.class, ResourceScheduler.class);
    // Set Max Application Priority as 10
    conf.setInt(YarnConfiguration.MAX_CLUSTER_LEVEL_APPLICATION_PRIORITY, 10);
    MockRM rm = new MockRM(conf);
    rm.start();

    Priority appPriority1 = Priority.newInstance(5);
    MockNM nm1 = rm.registerNode("127.0.0.1:1234", 16 * GB);
    RMApp app1 = rm.submitApp(1 * GB, appPriority1);

    // kick the scheduler, 1 GB given to AM1, remaining 15GB on nm1
    MockAM am1 = MockRM.launchAM(app1, rm, nm1);
    am1.registerAppAttempt();

    // allocate 7 containers for App1
    List<Container> allocated1 = am1.allocateAndWaitForContainers("127.0.0.1", 7, 2 * GB, nm1);

    Assert.assertEquals(7, allocated1.size());
    Assert.assertEquals(2 * GB, allocated1.get(0).getResource().getMemory());

    // check node report, 15 GB used (1 AM and 7 containers) and 1 GB available
    SchedulerNodeReport report_nm1 = rm.getResourceScheduler().getNodeReport(nm1.getNodeId());
    Assert.assertEquals(15 * GB, report_nm1.getUsedResource().getMemory());
    Assert.assertEquals(1 * GB, report_nm1.getAvailableResource().getMemory());

    // Submit the second app App2 with priority 8 (Higher than App1)
    Priority appPriority2 = Priority.newInstance(8);
    RMApp app2 = rm.submitApp(1 * GB, appPriority2);

    // kick the scheduler, 1 GB which was free is given to AM of App2
    MockAM am2 = MockRM.launchAM(app2, rm, nm1);
    am2.registerAppAttempt();

    // check node report, 16 GB used and 0 GB available
    report_nm1 = rm.getResourceScheduler().getNodeReport(nm1.getNodeId());
    Assert.assertEquals(16 * GB, report_nm1.getUsedResource().getMemory());
    Assert.assertEquals(0 * GB, report_nm1.getAvailableResource().getMemory());

    // get scheduler
    CapacityScheduler cs = (CapacityScheduler) rm.getResourceScheduler();

    // get scheduler app
    FiCaSchedulerApp schedulerAppAttempt =
        cs.getSchedulerApplications().get(app1.getApplicationId()).getCurrentAppAttempt();

    // kill 2 containers of App1 to free up some space
    int counter = 0;
    for (Container c : allocated1) {
      if (++counter > 2) {
        break;
      }
      cs.killContainer(schedulerAppAttempt.getRMContainer(c.getId()));
    }

    // check node report, 12 GB used and 4 GB available
    report_nm1 = rm.getResourceScheduler().getNodeReport(nm1.getNodeId());
    Assert.assertEquals(12 * GB, report_nm1.getUsedResource().getMemory());
    Assert.assertEquals(4 * GB, report_nm1.getAvailableResource().getMemory());

    // send updated request for App1
    am1.allocate("127.0.0.1", 2 * GB, 10, new ArrayList<ContainerId>());

    // kick the scheduler, since App2 priority is more than App1, it will get
    // remaining cluster space.
    List<Container> allocated2 = am2.allocateAndWaitForContainers("127.0.0.1", 2, 2 * GB, nm1);

    // App2 has got 2 containers now.
    Assert.assertEquals(2, allocated2.size());

    // check node report, 16 GB used and 0 GB available
    report_nm1 = rm.getResourceScheduler().getNodeReport(nm1.getNodeId());
    Assert.assertEquals(16 * GB, report_nm1.getUsedResource().getMemory());
    Assert.assertEquals(0 * GB, report_nm1.getAvailableResource().getMemory());

    rm.stop();
  }