/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.rmnode;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.net.Node;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerState;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.api.records.NodeState;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.ResourceOption;
import org.apache.hadoop.yarn.event.EventHandler;
import org.apache.hadoop.yarn.factories.RecordFactory;
import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
import org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager;
import org.apache.hadoop.yarn.server.api.protocolrecords.LogAggregationReport;
import org.apache.hadoop.yarn.server.api.protocolrecords.NMContainerStatus;
import org.apache.hadoop.yarn.server.api.protocolrecords.NodeHeartbeatResponse;
import org.apache.hadoop.yarn.server.api.records.NodeHealthStatus;
import org.apache.hadoop.yarn.server.resourcemanager.ClusterMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.NodesListManagerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.NodesListManagerEventType;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppRunningOnNodeEvent;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.ContainerAllocationExpirer;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeAddedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeRemovedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeResourceUpdateSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeUpdateSchedulerEvent;
import org.apache.hadoop.yarn.server.utils.BuilderUtils.ContainerIdComparator;
import org.apache.hadoop.yarn.state.InvalidStateTransitionException;
import org.apache.hadoop.yarn.state.MultipleArcTransition;
import org.apache.hadoop.yarn.state.SingleArcTransition;
import org.apache.hadoop.yarn.state.StateMachine;
import org.apache.hadoop.yarn.state.StateMachineFactory;
import com.google.common.annotations.VisibleForTesting;
/**
* This class is used to keep track of all the applications/containers
* running on a node.
*
*/
@Private
@Unstable
@SuppressWarnings("unchecked")
public class RMNodeImpl implements RMNode, EventHandler<RMNodeEvent> {
private static final Log LOG = LogFactory.getLog(RMNodeImpl.class);
private static final RecordFactory recordFactory = RecordFactoryProvider
.getRecordFactory(null);
private final ReadLock readLock;
private final WriteLock writeLock;
private final ConcurrentLinkedQueue<UpdatedContainerInfo> nodeUpdateQueue;
private volatile boolean nextHeartBeat = true;
private final NodeId nodeId;
private final RMContext context;
private final String hostName;
private final int commandPort;
private int httpPort;
private final String nodeAddress; // The containerManager address
private String httpAddress;
private volatile Resource totalCapability;
private final Node node;
private String healthReport;
private long lastHealthReportTime;
private String nodeManagerVersion;
private final ContainerAllocationExpirer containerAllocationExpirer;
/* set of containers that have just launched */
private final Set<ContainerId> launchedContainers =
new HashSet<ContainerId>();
/* set of containers that need to be cleaned */
private final Set<ContainerId> containersToClean = new TreeSet<ContainerId>(
new ContainerIdComparator());
/*
* set of containers to notify NM to remove them from its context. Currently,
* this includes containers that were notified to AM about their completion
*/
private final Set<ContainerId> containersToBeRemovedFromNM =
new HashSet<ContainerId>();
/* the list of applications that have finished and need to be purged */
private final List<ApplicationId> finishedApplications =
new ArrayList<ApplicationId>();
/* the list of applications that are running on this node */
private final List<ApplicationId> runningApplications =
new ArrayList<ApplicationId>();
private NodeHeartbeatResponse latestNodeHeartBeatResponse = recordFactory
.newRecordInstance(NodeHeartbeatResponse.class);
private static final StateMachineFactory<RMNodeImpl,
NodeState,
RMNodeEventType,
RMNodeEvent> stateMachineFactory
= new StateMachineFactory<RMNodeImpl,
NodeState,
RMNodeEventType,
RMNodeEvent>(NodeState.NEW)
//Transitions from NEW state
.addTransition(NodeState.NEW, NodeState.RUNNING,
RMNodeEventType.STARTED, new AddNodeTransition())
.addTransition(NodeState.NEW, NodeState.NEW,
RMNodeEventType.RESOURCE_UPDATE,
new UpdateNodeResourceWhenUnusableTransition())
//Transitions from RUNNING state
.addTransition(NodeState.RUNNING,
EnumSet.of(NodeState.RUNNING, NodeState.UNHEALTHY),
RMNodeEventType.STATUS_UPDATE, new StatusUpdateWhenHealthyTransition())
.addTransition(NodeState.RUNNING, NodeState.DECOMMISSIONED,
RMNodeEventType.DECOMMISSION,
new DeactivateNodeTransition(NodeState.DECOMMISSIONED))
.addTransition(NodeState.RUNNING, NodeState.LOST,
RMNodeEventType.EXPIRE,
new DeactivateNodeTransition(NodeState.LOST))
.addTransition(NodeState.RUNNING, NodeState.REBOOTED,
RMNodeEventType.REBOOTING,
new DeactivateNodeTransition(NodeState.REBOOTED))
.addTransition(NodeState.RUNNING, NodeState.RUNNING,
RMNodeEventType.CLEANUP_APP, new CleanUpAppTransition())
.addTransition(NodeState.RUNNING, NodeState.RUNNING,
RMNodeEventType.CLEANUP_CONTAINER, new CleanUpContainerTransition())
.addTransition(NodeState.RUNNING, NodeState.RUNNING,
RMNodeEventType.FINISHED_CONTAINERS_PULLED_BY_AM,
new AddContainersToBeRemovedFromNMTransition())
.addTransition(NodeState.RUNNING, NodeState.RUNNING,
RMNodeEventType.RECONNECTED, new ReconnectNodeTransition())
.addTransition(NodeState.RUNNING, NodeState.RUNNING,
RMNodeEventType.RESOURCE_UPDATE, new UpdateNodeResourceWhenRunningTransition())
.addTransition(NodeState.RUNNING, NodeState.SHUTDOWN,
RMNodeEventType.SHUTDOWN,
new DeactivateNodeTransition(NodeState.SHUTDOWN))
//Transitions from REBOOTED state
.addTransition(NodeState.REBOOTED, NodeState.REBOOTED,
RMNodeEventType.RESOURCE_UPDATE,
new UpdateNodeResourceWhenUnusableTransition())
//Transitions from DECOMMISSIONED state
.addTransition(NodeState.DECOMMISSIONED, NodeState.DECOMMISSIONED,
RMNodeEventType.RESOURCE_UPDATE,
new UpdateNodeResourceWhenUnusableTransition())
.addTransition(NodeState.DECOMMISSIONED, NodeState.DECOMMISSIONED,
RMNodeEventType.FINISHED_CONTAINERS_PULLED_BY_AM,
new AddContainersToBeRemovedFromNMTransition())
//Transitions from LOST state
.addTransition(NodeState.LOST, NodeState.LOST,
RMNodeEventType.RESOURCE_UPDATE,
new UpdateNodeResourceWhenUnusableTransition())
.addTransition(NodeState.LOST, NodeState.LOST,
RMNodeEventType.FINISHED_CONTAINERS_PULLED_BY_AM,
new AddContainersToBeRemovedFromNMTransition())
//Transitions from UNHEALTHY state
.addTransition(NodeState.UNHEALTHY,
EnumSet.of(NodeState.UNHEALTHY, NodeState.RUNNING),
RMNodeEventType.STATUS_UPDATE,
new StatusUpdateWhenUnHealthyTransition())
.addTransition(NodeState.UNHEALTHY, NodeState.DECOMMISSIONED,
RMNodeEventType.DECOMMISSION,
new DeactivateNodeTransition(NodeState.DECOMMISSIONED))
.addTransition(NodeState.UNHEALTHY, NodeState.LOST,
RMNodeEventType.EXPIRE,
new DeactivateNodeTransition(NodeState.LOST))
.addTransition(NodeState.UNHEALTHY, NodeState.REBOOTED,
RMNodeEventType.REBOOTING,
new DeactivateNodeTransition(NodeState.REBOOTED))
.addTransition(NodeState.UNHEALTHY, NodeState.UNHEALTHY,
RMNodeEventType.RECONNECTED, new ReconnectNodeTransition())
.addTransition(NodeState.UNHEALTHY, NodeState.UNHEALTHY,
RMNodeEventType.CLEANUP_APP, new CleanUpAppTransition())
.addTransition(NodeState.UNHEALTHY, NodeState.UNHEALTHY,
RMNodeEventType.CLEANUP_CONTAINER, new CleanUpContainerTransition())
.addTransition(NodeState.UNHEALTHY, NodeState.UNHEALTHY,
RMNodeEventType.RESOURCE_UPDATE, new UpdateNodeResourceWhenUnusableTransition())
.addTransition(NodeState.UNHEALTHY, NodeState.UNHEALTHY,
RMNodeEventType.FINISHED_CONTAINERS_PULLED_BY_AM,
new AddContainersToBeRemovedFromNMTransition())
.addTransition(NodeState.UNHEALTHY, NodeState.SHUTDOWN,
RMNodeEventType.SHUTDOWN,
new DeactivateNodeTransition(NodeState.SHUTDOWN))
//Transitions from SHUTDOWN state
.addTransition(NodeState.SHUTDOWN, NodeState.SHUTDOWN,
RMNodeEventType.RESOURCE_UPDATE,
new UpdateNodeResourceWhenUnusableTransition())
.addTransition(NodeState.SHUTDOWN, NodeState.SHUTDOWN,
RMNodeEventType.FINISHED_CONTAINERS_PULLED_BY_AM,
new AddContainersToBeRemovedFromNMTransition())
// create the topology tables
.installTopology();
private final StateMachine<NodeState, RMNodeEventType,
RMNodeEvent> stateMachine;
public RMNodeImpl(NodeId nodeId, RMContext context, String hostName,
int cmPort, int httpPort, Node node, Resource capability, String nodeManagerVersion) {
this.nodeId = nodeId;
this.context = context;
this.hostName = hostName;
this.commandPort = cmPort;
this.httpPort = httpPort;
this.totalCapability = capability;
this.nodeAddress = hostName + ":" + cmPort;
this.httpAddress = hostName + ":" + httpPort;
this.node = node;
this.healthReport = "Healthy";
this.lastHealthReportTime = System.currentTimeMillis();
this.nodeManagerVersion = nodeManagerVersion;
this.latestNodeHeartBeatResponse.setResponseId(0);
ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
this.readLock = lock.readLock();
this.writeLock = lock.writeLock();
this.stateMachine = stateMachineFactory.make(this);
this.nodeUpdateQueue = new ConcurrentLinkedQueue<UpdatedContainerInfo>();
this.containerAllocationExpirer = context.getContainerAllocationExpirer();
}
@Override
public String toString() {
return this.nodeId.toString();
}
@Override
public String getHostName() {
return hostName;
}
@Override
public int getCommandPort() {
return commandPort;
}
@Override
public int getHttpPort() {
return httpPort;
}
@Override
public NodeId getNodeID() {
return this.nodeId;
}
@Override
public String getNodeAddress() {
return this.nodeAddress;
}
@Override
public String getHttpAddress() {
return this.httpAddress;
}
@Override
public Resource getTotalCapability() {
return this.totalCapability;
}
@Override
public String getRackName() {
return node.getNetworkLocation();
}
@Override
public Node getNode() {
return this.node;
}
@Override
public String getHealthReport() {
this.readLock.lock();
try {
return this.healthReport;
} finally {
this.readLock.unlock();
}
}
public void setHealthReport(String healthReport) {
this.writeLock.lock();
try {
this.healthReport = healthReport;
} finally {
this.writeLock.unlock();
}
}
public void setLastHealthReportTime(long lastHealthReportTime) {
this.writeLock.lock();
try {
this.lastHealthReportTime = lastHealthReportTime;
} finally {
this.writeLock.unlock();
}
}
@Override
public long getLastHealthReportTime() {
this.readLock.lock();
try {
return this.lastHealthReportTime;
} finally {
this.readLock.unlock();
}
}
@Override
public String getNodeManagerVersion() {
return nodeManagerVersion;
}
@Override
public NodeState getState() {
this.readLock.lock();
try {
return this.stateMachine.getCurrentState();
} finally {
this.readLock.unlock();
}
}
@Override
public List<ApplicationId> getAppsToCleanup() {
this.readLock.lock();
try {
return new ArrayList<ApplicationId>(this.finishedApplications);
} finally {
this.readLock.unlock();
}
}
@Override
public List<ApplicationId> getRunningApps() {
this.readLock.lock();
try {
return new ArrayList<ApplicationId>(this.runningApplications);
} finally {
this.readLock.unlock();
}
}
@Override
public List<ContainerId> getContainersToCleanUp() {
this.readLock.lock();
try {
return new ArrayList<ContainerId>(this.containersToClean);
} finally {
this.readLock.unlock();
}
};
@Override
public void updateNodeHeartbeatResponseForCleanup(NodeHeartbeatResponse response) {
this.writeLock.lock();
try {
response.addAllContainersToCleanup(
new ArrayList<ContainerId>(this.containersToClean));
response.addAllApplicationsToCleanup(this.finishedApplications);
response.addContainersToBeRemovedFromNM(
new ArrayList<ContainerId>(this.containersToBeRemovedFromNM));
this.containersToClean.clear();
this.finishedApplications.clear();
this.containersToBeRemovedFromNM.clear();
} finally {
this.writeLock.unlock();
}
};
@Override
public NodeHeartbeatResponse getLastNodeHeartBeatResponse() {
this.readLock.lock();
try {
return this.latestNodeHeartBeatResponse;
} finally {
this.readLock.unlock();
}
}
public void handle(RMNodeEvent event) {
LOG.debug("Processing " + event.getNodeId() + " of type " + event.getType());
try {
writeLock.lock();
NodeState oldState = getState();
try {
stateMachine.doTransition(event.getType(), event);
} catch (InvalidStateTransitionException e) {
LOG.error("Can't handle this event at current state", e);
LOG.error("Invalid event " + event.getType() +
" on Node " + this.nodeId);
}
if (oldState != getState()) {
LOG.info(nodeId + " Node Transitioned from " + oldState + " to "
+ getState());
}
}
finally {
writeLock.unlock();
}
}
private void updateMetricsForRejoinedNode(NodeState previousNodeState) {
ClusterMetrics metrics = ClusterMetrics.getMetrics();
metrics.incrNumActiveNodes();
switch (previousNodeState) {
case LOST:
metrics.decrNumLostNMs();
break;
case REBOOTED:
metrics.decrNumRebootedNMs();
break;
case DECOMMISSIONED:
metrics.decrDecommisionedNMs();
break;
case UNHEALTHY:
metrics.decrNumUnhealthyNMs();
break;
case SHUTDOWN:
metrics.decrNumShutdownNMs();
break;
default:
LOG.debug("Unexpected previous node state");
}
}
private void updateMetricsForDeactivatedNode(NodeState initialState,
NodeState finalState) {
ClusterMetrics metrics = ClusterMetrics.getMetrics();
switch (initialState) {
case RUNNING:
metrics.decrNumActiveNodes();
break;
case UNHEALTHY:
metrics.decrNumUnhealthyNMs();
break;
default:
LOG.debug("Unexpected inital state");
}
switch (finalState) {
case DECOMMISSIONED:
metrics.incrDecommisionedNMs();
break;
case LOST:
metrics.incrNumLostNMs();
break;
case REBOOTED:
metrics.incrNumRebootedNMs();
break;
case UNHEALTHY:
metrics.incrNumUnhealthyNMs();
break;
case SHUTDOWN:
metrics.incrNumShutdownNMs();
break;
default:
LOG.debug("Unexpected final state");
}
}
private static void handleRunningAppOnNode(RMNodeImpl rmNode,
RMContext context, ApplicationId appId, NodeId nodeId) {
RMApp app = context.getRMApps().get(appId);
// if we failed getting app by appId, maybe something wrong happened, just
// add the app to the finishedApplications list so that the app can be
// cleaned up on the NM
if (null == app) {
LOG.warn("Cannot get RMApp by appId=" + appId
+ ", just added it to finishedApplications list for cleanup");
rmNode.finishedApplications.add(appId);
rmNode.runningApplications.remove(appId);
return;
}
// Add running applications back due to Node add or Node reconnection.
rmNode.runningApplications.add(appId);
context.getDispatcher().getEventHandler()
.handle(new RMAppRunningOnNodeEvent(appId, nodeId));
}
private static void updateNodeResourceFromEvent(RMNodeImpl rmNode,
RMNodeResourceUpdateEvent event){
ResourceOption resourceOption = event.getResourceOption();
// Set resource on RMNode
rmNode.totalCapability = resourceOption.getResource();
}
public static class AddNodeTransition implements
SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
// Inform the scheduler
RMNodeStartedEvent startEvent = (RMNodeStartedEvent) event;
List<NMContainerStatus> containers = null;
NodeId nodeId = rmNode.nodeId;
if (rmNode.context.getInactiveRMNodes().containsKey(nodeId)) {
// Old node rejoining
RMNode previouRMNode = rmNode.context.getInactiveRMNodes().get(nodeId);
rmNode.context.getInactiveRMNodes().remove(nodeId);
rmNode.updateMetricsForRejoinedNode(previouRMNode.getState());
} else {
// Increment activeNodes explicitly because this is a new node.
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());
}
}
}
}
if (null != startEvent.getRunningApplications()) {
for (ApplicationId appId : startEvent.getRunningApplications()) {
handleRunningAppOnNode(rmNode, rmNode.context, appId, rmNode.nodeId);
}
}
rmNode.context.getDispatcher().getEventHandler()
.handle(new NodeAddedSchedulerEvent(rmNode, containers));
rmNode.context.getDispatcher().getEventHandler().handle(
new NodesListManagerEvent(
NodesListManagerEventType.NODE_USABLE, rmNode));
}
}
public static class ReconnectNodeTransition implements
SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
RMNodeReconnectEvent reconnectEvent = (RMNodeReconnectEvent) event;
RMNode newNode = reconnectEvent.getReconnectedNode();
rmNode.nodeManagerVersion = newNode.getNodeManagerVersion();
List<ApplicationId> runningApps = reconnectEvent.getRunningApplications();
boolean noRunningApps =
(runningApps == null) || (runningApps.size() == 0);
// No application running on the node, so send node-removal event with
// cleaning up old container info.
if (noRunningApps) {
rmNode.nodeUpdateQueue.clear();
rmNode.context.getDispatcher().getEventHandler().handle(
new NodeRemovedSchedulerEvent(rmNode));
if (rmNode.getHttpPort() == newNode.getHttpPort()) {
// Reset heartbeat ID since node just restarted.
rmNode.getLastNodeHeartBeatResponse().setResponseId(0);
if (!rmNode.getTotalCapability().equals(
newNode.getTotalCapability())) {
rmNode.totalCapability = newNode.getTotalCapability();
}
if (rmNode.getState().equals(NodeState.RUNNING)) {
// Only add old node if old state is RUNNING
rmNode.context.getDispatcher().getEventHandler().handle(
new NodeAddedSchedulerEvent(rmNode));
}
} else {
// Reconnected node differs, so replace old node and start new node
switch (rmNode.getState()) {
case RUNNING:
ClusterMetrics.getMetrics().decrNumActiveNodes();
break;
case UNHEALTHY:
ClusterMetrics.getMetrics().decrNumUnhealthyNMs();
break;
default:
LOG.debug("Unexpected Rmnode state");
}
rmNode.context.getRMNodes().put(newNode.getNodeID(), newNode);
rmNode.context.getDispatcher().getEventHandler().handle(
new RMNodeStartedEvent(newNode.getNodeID(), null, null));
}
} else {
rmNode.httpPort = newNode.getHttpPort();
rmNode.httpAddress = newNode.getHttpAddress();
boolean isCapabilityChanged = false;
if (!rmNode.getTotalCapability().equals(
newNode.getTotalCapability())) {
rmNode.totalCapability = newNode.getTotalCapability();
isCapabilityChanged = true;
}
handleNMContainerStatus(reconnectEvent.getNMContainerStatuses(), rmNode);
// Reset heartbeat ID since node just restarted.
rmNode.getLastNodeHeartBeatResponse().setResponseId(0);
for (ApplicationId appId : reconnectEvent.getRunningApplications()) {
handleRunningAppOnNode(rmNode, rmNode.context, appId, rmNode.nodeId);
}
if (isCapabilityChanged
&& rmNode.getState().equals(NodeState.RUNNING)) {
// Update scheduler node's capacity for reconnect node.
rmNode.context
.getDispatcher()
.getEventHandler()
.handle(
new NodeResourceUpdateSchedulerEvent(rmNode, ResourceOption
.newInstance(newNode.getTotalCapability(), -1)));
}
}
}
private void handleNMContainerStatus(
List<NMContainerStatus> nmContainerStatuses, RMNodeImpl rmnode) {
List<ContainerStatus> containerStatuses =
new ArrayList<ContainerStatus>();
for (NMContainerStatus nmContainerStatus : nmContainerStatuses) {
containerStatuses.add(createContainerStatus(nmContainerStatus));
}
rmnode.handleContainerStatus(containerStatuses);
}
private ContainerStatus createContainerStatus(
NMContainerStatus remoteContainer) {
ContainerStatus cStatus =
ContainerStatus.newInstance(remoteContainer.getContainerId(),
remoteContainer.getContainerState(),
remoteContainer.getDiagnostics(),
remoteContainer.getContainerExitStatus());
return cStatus;
}
}
public static class UpdateNodeResourceWhenRunningTransition
implements SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
RMNodeResourceUpdateEvent updateEvent = (RMNodeResourceUpdateEvent)event;
updateNodeResourceFromEvent(rmNode, updateEvent);
// Notify new resourceOption to scheduler
rmNode.context.getDispatcher().getEventHandler().handle(
new NodeResourceUpdateSchedulerEvent(rmNode, updateEvent.getResourceOption()));
}
}
public static class UpdateNodeResourceWhenUnusableTransition
implements SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
// The node is not usable, only log a warn message
LOG.warn("Try to update resource on a "+ rmNode.getState().toString() +
" node: "+rmNode.toString());
updateNodeResourceFromEvent(rmNode, (RMNodeResourceUpdateEvent)event);
// No need to notify scheduler as schedulerNode is not function now
// and can sync later from RMnode.
}
}
public static class CleanUpAppTransition
implements SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
ApplicationId appId = ((RMNodeCleanAppEvent) event).getAppId();
rmNode.finishedApplications.add(appId);
rmNode.runningApplications.remove(appId);
}
}
public static class CleanUpContainerTransition implements
SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
rmNode.containersToClean.add(((
RMNodeCleanContainerEvent) event).getContainerId());
}
}
public static class AddContainersToBeRemovedFromNMTransition implements
SingleArcTransition<RMNodeImpl, RMNodeEvent> {
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
rmNode.containersToBeRemovedFromNM.addAll(((
RMNodeFinishedContainersPulledByAMEvent) event).getContainers());
}
}
public static class DeactivateNodeTransition
implements SingleArcTransition<RMNodeImpl, RMNodeEvent> {
private final NodeState finalState;
public DeactivateNodeTransition(NodeState finalState) {
this.finalState = finalState;
}
@Override
public void transition(RMNodeImpl rmNode, RMNodeEvent event) {
// Inform the scheduler
rmNode.nodeUpdateQueue.clear();
// If the current state is NodeState.UNHEALTHY
// Then node is already been removed from the
// Scheduler
NodeState initialState = rmNode.getState();
if (!initialState.equals(NodeState.UNHEALTHY)) {
rmNode.context.getDispatcher().getEventHandler()
.handle(new NodeRemovedSchedulerEvent(rmNode));
}
rmNode.context.getDispatcher().getEventHandler().handle(
new NodesListManagerEvent(
NodesListManagerEventType.NODE_UNUSABLE, rmNode));
// Deactivate the node
rmNode.context.getRMNodes().remove(rmNode.nodeId);
LOG.info("Deactivating Node " + rmNode.nodeId + " as it is now "
+ finalState);
rmNode.context.getInactiveRMNodes().put(rmNode.nodeId, rmNode);
//Update the metrics
rmNode.updateMetricsForDeactivatedNode(initialState, finalState);
}
}
public static class StatusUpdateWhenHealthyTransition implements
MultipleArcTransition<RMNodeImpl, RMNodeEvent, NodeState> {
@Override
public NodeState transition(RMNodeImpl rmNode, RMNodeEvent event) {
RMNodeStatusEvent statusEvent = (RMNodeStatusEvent) event;
// Switch the last heartbeatresponse.
rmNode.latestNodeHeartBeatResponse = statusEvent.getLatestResponse();
NodeHealthStatus remoteNodeHealthStatus =
statusEvent.getNodeHealthStatus();
rmNode.setHealthReport(remoteNodeHealthStatus.getHealthReport());
rmNode.setLastHealthReportTime(
remoteNodeHealthStatus.getLastHealthReportTime());
if (!remoteNodeHealthStatus.getIsNodeHealthy()) {
LOG.info("Node " + rmNode.nodeId + " reported UNHEALTHY with details: "
+ remoteNodeHealthStatus.getHealthReport());
rmNode.nodeUpdateQueue.clear();
// Inform the scheduler
rmNode.context.getDispatcher().getEventHandler().handle(
new NodeRemovedSchedulerEvent(rmNode));
rmNode.context.getDispatcher().getEventHandler().handle(
new NodesListManagerEvent(
NodesListManagerEventType.NODE_UNUSABLE, rmNode));
// Update metrics
rmNode.updateMetricsForDeactivatedNode(rmNode.getState(),
NodeState.UNHEALTHY);
return NodeState.UNHEALTHY;
}
rmNode.handleContainerStatus(statusEvent.getContainers());
List<LogAggregationReport> logAggregationReportsForApps =
statusEvent.getLogAggregationReportsForApps();
if (logAggregationReportsForApps != null
&& !logAggregationReportsForApps.isEmpty()) {
rmNode.handleLogAggregationStatus(logAggregationReportsForApps);
}
if(rmNode.nextHeartBeat) {
rmNode.nextHeartBeat = false;
rmNode.context.getDispatcher().getEventHandler().handle(
new NodeUpdateSchedulerEvent(rmNode));
}
// Update DTRenewer in secure mode to keep these apps alive. Today this is
// needed for log-aggregation to finish long after the apps are gone.
if (UserGroupInformation.isSecurityEnabled()) {
rmNode.context.getDelegationTokenRenewer().updateKeepAliveApplications(
statusEvent.getKeepAliveAppIds());
}
return NodeState.RUNNING;
}
}
public static class StatusUpdateWhenUnHealthyTransition implements
MultipleArcTransition<RMNodeImpl, RMNodeEvent, NodeState> {
@Override
public NodeState transition(RMNodeImpl rmNode, RMNodeEvent event) {
RMNodeStatusEvent statusEvent = (RMNodeStatusEvent) event;
// Switch the last heartbeatresponse.
rmNode.latestNodeHeartBeatResponse = statusEvent.getLatestResponse();
NodeHealthStatus remoteNodeHealthStatus = statusEvent.getNodeHealthStatus();
rmNode.setHealthReport(remoteNodeHealthStatus.getHealthReport());
rmNode.setLastHealthReportTime(
remoteNodeHealthStatus.getLastHealthReportTime());
if (remoteNodeHealthStatus.getIsNodeHealthy()) {
rmNode.context.getDispatcher().getEventHandler().handle(
new NodeAddedSchedulerEvent(rmNode));
rmNode.context.getDispatcher().getEventHandler().handle(
new NodesListManagerEvent(
NodesListManagerEventType.NODE_USABLE, rmNode));
// ??? how about updating metrics before notifying to ensure that
// notifiers get update metadata because they will very likely query it
// upon notification
// Update metrics
rmNode.updateMetricsForRejoinedNode(NodeState.UNHEALTHY);
return NodeState.RUNNING;
}
return NodeState.UNHEALTHY;
}
}
@Override
public List<UpdatedContainerInfo> pullContainerUpdates() {
List<UpdatedContainerInfo> latestContainerInfoList =
new ArrayList<UpdatedContainerInfo>();
UpdatedContainerInfo containerInfo;
while ((containerInfo = nodeUpdateQueue.poll()) != null) {
latestContainerInfoList.add(containerInfo);
}
this.nextHeartBeat = true;
return latestContainerInfoList;
}
@VisibleForTesting
public void setNextHeartBeat(boolean nextHeartBeat) {
this.nextHeartBeat = nextHeartBeat;
}
@VisibleForTesting
public int getQueueSize() {
return nodeUpdateQueue.size();
}
// For test only.
@VisibleForTesting
public Set<ContainerId> getLaunchedContainers() {
return this.launchedContainers;
}
@Override
public Set<String> getNodeLabels() {
RMNodeLabelsManager nlm = context.getNodeLabelManager();
if (nlm == null || nlm.getLabelsOnNode(nodeId) == null) {
return CommonNodeLabelsManager.EMPTY_STRING_SET;
}
return nlm.getLabelsOnNode(nodeId);
}
private void handleContainerStatus(List<ContainerStatus> containerStatuses) {
// Filter the map to only obtain just launched containers and finished
// containers.
List<ContainerStatus> newlyLaunchedContainers =
new ArrayList<ContainerStatus>();
List<ContainerStatus> completedContainers =
new ArrayList<ContainerStatus>();
for (ContainerStatus remoteContainer : containerStatuses) {
ContainerId containerId = remoteContainer.getContainerId();
// Don't bother with containers already scheduled for cleanup, or for
// applications already killed. The scheduler doens't need to know any
// more about this container
if (containersToClean.contains(containerId)) {
LOG.info("Container " + containerId + " already scheduled for "
+ "cleanup, no further processing");
continue;
}
ApplicationId containerAppId =
containerId.getApplicationAttemptId().getApplicationId();
if (finishedApplications.contains(containerAppId)) {
LOG.info("Container " + containerId
+ " belongs to an application that is already killed,"
+ " no further processing");
continue;
} else if (!runningApplications.contains(containerAppId)) {
if (LOG.isDebugEnabled()) {
LOG.debug("Container " + containerId
+ " is the first container get launched for application "
+ containerAppId);
}
runningApplications.add(containerAppId);
}
// Process running containers
if (remoteContainer.getState() == ContainerState.RUNNING) {
if (!launchedContainers.contains(containerId)) {
// Just launched container. RM knows about it the first time.
launchedContainers.add(containerId);
newlyLaunchedContainers.add(remoteContainer);
// Unregister from containerAllocationExpirer.
containerAllocationExpirer.unregister(containerId);
}
} else {
// A finished container
launchedContainers.remove(containerId);
completedContainers.add(remoteContainer);
// Unregister from containerAllocationExpirer.
containerAllocationExpirer.unregister(containerId);
}
}
if (newlyLaunchedContainers.size() != 0 || completedContainers.size() != 0) {
nodeUpdateQueue.add(new UpdatedContainerInfo(newlyLaunchedContainers,
completedContainers));
}
}
private void handleLogAggregationStatus(
List<LogAggregationReport> logAggregationReportsForApps) {
for (LogAggregationReport report : logAggregationReportsForApps) {
RMApp rmApp = this.context.getRMApps().get(report.getApplicationId());
if (rmApp != null) {
((RMAppImpl)rmApp).aggregateLogReport(this.nodeId, report);
}
}
}
}