@Test
  public void testNodeHeartBeatWithInvalidLabels() throws Exception {
    writeToHostsFile("host2");
    Configuration conf = new Configuration();
    conf.set(YarnConfiguration.RM_NODES_INCLUDE_FILE_PATH, hostFile.getAbsolutePath());
    conf.set(
        YarnConfiguration.NODELABEL_CONFIGURATION_TYPE,
        YarnConfiguration.DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE);

    final RMNodeLabelsManager nodeLabelsMgr = new NullRMNodeLabelsManager();

    rm =
        new MockRM(conf) {
          @Override
          protected RMNodeLabelsManager createNodeLabelManager() {
            return nodeLabelsMgr;
          }
        };
    rm.start();

    try {
      nodeLabelsMgr.addToCluserNodeLabelsWithDefaultExclusivity(toSet("A", "B", "C"));
    } catch (IOException e) {
      Assert.fail("Caught Exception while intializing");
      e.printStackTrace();
    }

    ResourceTrackerService resourceTrackerService = rm.getResourceTrackerService();
    RegisterNodeManagerRequest registerReq = Records.newRecord(RegisterNodeManagerRequest.class);
    NodeId nodeId = NodeId.newInstance("host2", 1234);
    Resource capability = BuilderUtils.newResource(1024, 1);
    registerReq.setResource(capability);
    registerReq.setNodeId(nodeId);
    registerReq.setHttpPort(1234);
    registerReq.setNMVersion(YarnVersionInfo.getVersion());
    registerReq.setNodeLabels(toNodeLabelSet("A"));
    RegisterNodeManagerResponse registerResponse =
        resourceTrackerService.registerNodeManager(registerReq);

    NodeHeartbeatRequest heartbeatReq = Records.newRecord(NodeHeartbeatRequest.class);
    heartbeatReq.setNodeLabels(toNodeLabelSet("B", "#C")); // Invalid heart beat labels
    heartbeatReq.setNodeStatus(getNodeStatusObject(nodeId));
    heartbeatReq.setLastKnownNMTokenMasterKey(registerResponse.getNMTokenMasterKey());
    heartbeatReq.setLastKnownContainerTokenMasterKey(registerResponse.getContainerTokenMasterKey());
    NodeHeartbeatResponse nodeHeartbeatResponse =
        resourceTrackerService.nodeHeartbeat(heartbeatReq);

    // response should be NORMAL when RM heartbeat labels are rejected
    Assert.assertEquals(
        "Response should be NORMAL when RM heartbeat labels" + " are rejected",
        NodeAction.NORMAL,
        nodeHeartbeatResponse.getNodeAction());
    Assert.assertFalse(nodeHeartbeatResponse.getAreNodeLabelsAcceptedByRM());
    Assert.assertNotNull(nodeHeartbeatResponse.getDiagnosticsMessage());
    rm.stop();
  }
  @Test
  public void testNodeHeartbeatWithCentralLabelConfig() throws Exception {
    writeToHostsFile("host2");
    Configuration conf = new Configuration();
    conf.set(YarnConfiguration.RM_NODES_INCLUDE_FILE_PATH, hostFile.getAbsolutePath());
    conf.set(
        YarnConfiguration.NODELABEL_CONFIGURATION_TYPE,
        YarnConfiguration.DEFAULT_NODELABEL_CONFIGURATION_TYPE);

    final RMNodeLabelsManager nodeLabelsMgr = new NullRMNodeLabelsManager();

    rm =
        new MockRM(conf) {
          @Override
          protected RMNodeLabelsManager createNodeLabelManager() {
            return nodeLabelsMgr;
          }
        };
    rm.start();

    ResourceTrackerService resourceTrackerService = rm.getResourceTrackerService();
    RegisterNodeManagerRequest req = Records.newRecord(RegisterNodeManagerRequest.class);
    NodeId nodeId = NodeId.newInstance("host2", 1234);
    Resource capability = BuilderUtils.newResource(1024, 1);
    req.setResource(capability);
    req.setNodeId(nodeId);
    req.setHttpPort(1234);
    req.setNMVersion(YarnVersionInfo.getVersion());
    req.setNodeLabels(toNodeLabelSet("A", "B", "C"));
    RegisterNodeManagerResponse registerResponse = resourceTrackerService.registerNodeManager(req);

    NodeHeartbeatRequest heartbeatReq = Records.newRecord(NodeHeartbeatRequest.class);
    heartbeatReq.setNodeLabels(toNodeLabelSet("B")); // Valid heart beat labels
    heartbeatReq.setNodeStatus(getNodeStatusObject(nodeId));
    heartbeatReq.setLastKnownNMTokenMasterKey(registerResponse.getNMTokenMasterKey());
    heartbeatReq.setLastKnownContainerTokenMasterKey(registerResponse.getContainerTokenMasterKey());
    NodeHeartbeatResponse nodeHeartbeatResponse =
        resourceTrackerService.nodeHeartbeat(heartbeatReq);

    // response should be ok but the RMacceptNodeLabelsUpdate should be false
    Assert.assertEquals(NodeAction.NORMAL, nodeHeartbeatResponse.getNodeAction());
    // no change in the labels,
    Assert.assertNull(nodeLabelsMgr.getNodeLabels().get(nodeId));
    // heartbeat labels rejected
    Assert.assertFalse(
        "Invalid Node Labels should not accepted by RM",
        nodeHeartbeatResponse.getAreNodeLabelsAcceptedByRM());
    if (rm != null) {
      rm.stop();
    }
  }
  @Test
  public void testNodeHeartBeatWithLabels() throws Exception {
    writeToHostsFile("host2");
    Configuration conf = new Configuration();
    conf.set(YarnConfiguration.RM_NODES_INCLUDE_FILE_PATH, hostFile.getAbsolutePath());
    conf.set(
        YarnConfiguration.NODELABEL_CONFIGURATION_TYPE,
        YarnConfiguration.DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE);

    final RMNodeLabelsManager nodeLabelsMgr = new NullRMNodeLabelsManager();

    rm =
        new MockRM(conf) {
          @Override
          protected RMNodeLabelsManager createNodeLabelManager() {
            return nodeLabelsMgr;
          }
        };
    rm.start();
    // adding valid labels
    try {
      nodeLabelsMgr.addToCluserNodeLabelsWithDefaultExclusivity(toSet("A", "B", "C"));
    } catch (IOException e) {
      Assert.fail("Caught Exception while intializing");
      e.printStackTrace();
    }

    // Registering of labels and other required info to RM
    ResourceTrackerService resourceTrackerService = rm.getResourceTrackerService();
    RegisterNodeManagerRequest registerReq = Records.newRecord(RegisterNodeManagerRequest.class);
    NodeId nodeId = NodeId.newInstance("host2", 1234);
    Resource capability = BuilderUtils.newResource(1024, 1);
    registerReq.setResource(capability);
    registerReq.setNodeId(nodeId);
    registerReq.setHttpPort(1234);
    registerReq.setNMVersion(YarnVersionInfo.getVersion());
    registerReq.setNodeLabels(toNodeLabelSet("A")); // Node register label
    RegisterNodeManagerResponse registerResponse =
        resourceTrackerService.registerNodeManager(registerReq);

    // modification of labels during heartbeat
    NodeHeartbeatRequest heartbeatReq = Records.newRecord(NodeHeartbeatRequest.class);
    heartbeatReq.setNodeLabels(toNodeLabelSet("B")); // Node heartbeat label update
    NodeStatus nodeStatusObject = getNodeStatusObject(nodeId);
    heartbeatReq.setNodeStatus(nodeStatusObject);
    heartbeatReq.setLastKnownNMTokenMasterKey(registerResponse.getNMTokenMasterKey());
    heartbeatReq.setLastKnownContainerTokenMasterKey(registerResponse.getContainerTokenMasterKey());
    NodeHeartbeatResponse nodeHeartbeatResponse =
        resourceTrackerService.nodeHeartbeat(heartbeatReq);

    Assert.assertEquals(
        "InValid Node Labels were not accepted by RM",
        NodeAction.NORMAL,
        nodeHeartbeatResponse.getNodeAction());
    assertCollectionEquals(
        nodeLabelsMgr.getNodeLabels().get(nodeId),
        ResourceTrackerService.convertToStringSet(heartbeatReq.getNodeLabels()));
    Assert.assertTrue(
        "Valid Node Labels were not accepted by RM",
        nodeHeartbeatResponse.getAreNodeLabelsAcceptedByRM());

    // After modification of labels next heartbeat sends null informing no update
    Set<String> oldLabels = nodeLabelsMgr.getNodeLabels().get(nodeId);
    int responseId = nodeStatusObject.getResponseId();
    heartbeatReq = Records.newRecord(NodeHeartbeatRequest.class);
    heartbeatReq.setNodeLabels(null); // Node heartbeat label update
    nodeStatusObject = getNodeStatusObject(nodeId);
    nodeStatusObject.setResponseId(responseId + 2);
    heartbeatReq.setNodeStatus(nodeStatusObject);
    heartbeatReq.setLastKnownNMTokenMasterKey(registerResponse.getNMTokenMasterKey());
    heartbeatReq.setLastKnownContainerTokenMasterKey(registerResponse.getContainerTokenMasterKey());
    nodeHeartbeatResponse = resourceTrackerService.nodeHeartbeat(heartbeatReq);

    Assert.assertEquals(
        "InValid Node Labels were not accepted by RM",
        NodeAction.NORMAL,
        nodeHeartbeatResponse.getNodeAction());
    assertCollectionEquals(nodeLabelsMgr.getNodeLabels().get(nodeId), oldLabels);
    Assert.assertFalse(
        "Node Labels should not accepted by RM",
        nodeHeartbeatResponse.getAreNodeLabelsAcceptedByRM());
    rm.stop();
  }