How to use

RMNodeStartedEvent

in

org.apache.hadoop.yarn.server.resourcemanager.rmnode

private void sendStartedEvent(RMNode node) {
 ((RMNodeImpl) node)
   .handle(new RMNodeStartedEvent(node.getNodeID(), null, null));
}

 containers = startEvent.getNMContainerStatuses();
 if (containers != null && !containers.isEmpty()) {
  for (NMContainerStatus container : containers) {
if (null != startEvent.getRunningApplications()) {
 for (ApplicationId appId : startEvent.getRunningApplications()) {
  handleRunningAppOnNode(rmNode, rmNode.context, appId, rmNode.nodeId);
   NodesListManagerEventType.NODE_USABLE, rmNode));
List<LogAggregationReport> logAggregationReportsForApps =
  startEvent.getLogAggregationReportsForApps();
if (logAggregationReportsForApps != null
  && !logAggregationReportsForApps.isEmpty()) {

RMNodeStartedEvent startEvent = new RMNodeStartedEvent(nodeId,
  request.getNMContainerStatuses(),
  request.getRunningApplications());
    + request.getLogAggregationReportsForApps().size());
 startEvent.setLogAggregationReportsForApps(request
   .getLogAggregationReportsForApps());
   .handle(new RMNodeStartedEvent(nodeId, null, null));
} else {

private static List<NMContainerStatus> updateNewNodeMetricsAndContainers(
  RMNodeImpl rmNode, RMNodeStartedEvent startEvent) {
 List<NMContainerStatus> containers;
 ClusterMetrics.getMetrics().incrNumActiveNodes();
 containers = startEvent.getNMContainerStatuses();
 if (containers != null && !containers.isEmpty()) {
  for (NMContainerStatus container : containers) {
   if (container.getContainerState() == ContainerState.RUNNING) {
    rmNode.launchedContainers.add(container.getContainerId());
   }
  }
 }
 return containers;
}

if (null != startEvent.getRunningApplications()) {
 for (ApplicationId appId : startEvent.getRunningApplications()) {
  handleRunningAppOnNode(rmNode, rmNode.context, appId, rmNode.nodeId);

private static List<NMContainerStatus> updateNewNodeMetricsAndContainers(
  RMNodeImpl rmNode, RMNodeStartedEvent startEvent) {
 List<NMContainerStatus> containers;
 ClusterMetrics.getMetrics().incrNumActiveNodes();
 containers = startEvent.getNMContainerStatuses();
 if (containers != null && !containers.isEmpty()) {
  for (NMContainerStatus container : containers) {
   if (container.getContainerState() == ContainerState.RUNNING) {
    rmNode.launchedContainers.add(container.getContainerId());
   }
  }
 }
 return containers;
}

if (null != startEvent.getRunningApplications()) {
 for (ApplicationId appId : startEvent.getRunningApplications()) {
  handleRunningAppOnNode(rmNode, rmNode.context, appId, rmNode.nodeId);

public void sendNodeStarted(MockNM nm) throws Exception {
 RMNodeImpl node = (RMNodeImpl) getRMContext().getRMNodes().get(
   nm.getNodeId());
 node.handle(new RMNodeStartedEvent(nm.getNodeId(), null, null));
}

@Test (timeout = 5000)
public void testExpiredContainer() {
 // Start the node
 node.handle(new RMNodeStartedEvent(null, null, null));
 verify(scheduler).handle(any(NodeAddedSchedulerEvent.class));
 
 // Expire a container
 ContainerId completedContainerId = BuilderUtils.newContainerId(
   BuilderUtils.newApplicationAttemptId(
     BuilderUtils.newApplicationId(0, 0), 0), 0);
 node.handle(new RMNodeCleanContainerEvent(null, completedContainerId));
 Assert.assertEquals(1, node.getContainersToCleanUp().size());
 
 // Now verify that scheduler isn't notified of an expired container
 // by checking number of 'completedContainers' it got in the previous event
 RMNodeStatusEvent statusEvent = getMockRMNodeStatusEvent();
 ContainerStatus containerStatus = mock(ContainerStatus.class);
 doReturn(completedContainerId).when(containerStatus).getContainerId();
 doReturn(Collections.singletonList(containerStatus)).
   when(statusEvent).getContainers();
 node.handle(statusEvent);
 /* Expect the scheduler call handle function 2 times
  * 1. RMNode status from new to Running, handle the add_node event
  * 2. handle the node update event
  */
 verify(scheduler,times(2)).handle(any(NodeUpdateSchedulerEvent.class));     
}

@Test (timeout = 5000)
public void testExpiredContainer() {
 // Start the node
 node.handle(new RMNodeStartedEvent(null, null, null));
 verify(scheduler).handle(any(NodeAddedSchedulerEvent.class));
 
 // Expire a container
 ContainerId completedContainerId = BuilderUtils.newContainerId(
   BuilderUtils.newApplicationAttemptId(
     BuilderUtils.newApplicationId(0, 0), 0), 0);
 node.handle(new RMNodeCleanContainerEvent(null, completedContainerId));
 Assert.assertEquals(1, node.getContainersToCleanUp().size());
 
 // Now verify that scheduler isn't notified of an expired container
 // by checking number of 'completedContainers' it got in the previous event
 RMNodeStatusEvent statusEvent = getMockRMNodeStatusEvent(null);
 ContainerStatus containerStatus = mock(ContainerStatus.class);
 doReturn(completedContainerId).when(containerStatus).getContainerId();
 doReturn(Collections.singletonList(containerStatus)).
   when(statusEvent).getContainers();
 node.handle(statusEvent);
 /* Expect the scheduler call handle function 2 times
  * 1. RMNode status from new to Running, handle the add_node event
  * 2. handle the node update event
  */
 verify(scheduler,times(2)).handle(any(NodeUpdateSchedulerEvent.class));     
}

public void sendNodeStarted(MockNM nm) throws Exception {
 RMNodeImpl node = (RMNodeImpl) getRMContext().getRMNodes().get(
   nm.getNodeId());
 node.handle(new RMNodeStartedEvent(nm.getNodeId(), null, null));
 drainEventsImplicitly();
}

@Test (timeout = 5000)
public void testStatusChange(){
 node.handle(new RMNodeStartedEvent(null, null, null));

@Test (timeout = 5000)
public void testStatusChange(){
 node.handle(new RMNodeStartedEvent(null, null, null));

@Test
public void testForHandlingDuplicatedCompltedContainers() {
 node.handle(new RMNodeStartedEvent(null, null, null));

@Test (timeout = 5000)
public void testContainerUpdate() throws InterruptedException{
 node.handle(new RMNodeStartedEvent(null, null, null));
 node2.handle(new RMNodeStartedEvent(null, null, null));

@Test (timeout = 5000)
public void testContainerUpdate() throws InterruptedException{
 node.handle(new RMNodeStartedEvent(null, null, null));
 node2.handle(new RMNodeStartedEvent(null, null, null));

private RMNodeImpl getRunningNode(String nmVersion) {
 NodeId nodeId = BuilderUtils.newNodeId("localhost", 0);
 Resource capability = Resource.newInstance(4096, 4);
 RMNodeImpl node = new RMNodeImpl(nodeId, rmContext,null, 0, 0,
   null, capability, nmVersion);
 node.handle(new RMNodeStartedEvent(node.getNodeID(), null, null));
 Assert.assertEquals(NodeState.RUNNING, node.getState());
 return node;
}

private RMNodeImpl getRunningNode(String nmVersion, int port) {
 NodeId nodeId = BuilderUtils.newNodeId("localhost", port);
 Resource capability = Resource.newInstance(4096, 4);
 RMNodeImpl node = new RMNodeImpl(nodeId, rmContext, null, 0, 0, null,
   capability, nmVersion);
 node.handle(new RMNodeStartedEvent(node.getNodeID(), null, null));
 Assert.assertEquals(NodeState.RUNNING, node.getState());
 return node;
}

if (oldNode == null) {
 this.rmContext.getDispatcher().getEventHandler().handle(
     new RMNodeStartedEvent(nodeId, request.getNMContainerStatuses(),
       request.getRunningApplications()));
} else {

if (oldNode == null) {
 this.rmContext.getDispatcher().getEventHandler().handle(
     new RMNodeStartedEvent(nodeId, request.getNMContainerStatuses(),
       request.getRunningApplications()));
} else {