/**
* 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 com.datatorrent.stram;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;
import javax.xml.bind.annotation.XmlElement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.apex.common.util.PropertiesHelper;
import org.apache.apex.engine.api.plugin.DAGExecutionPlugin;
import org.apache.apex.engine.api.plugin.PluginLocator;
import org.apache.apex.engine.events.grouping.GroupingManager;
import org.apache.apex.engine.events.grouping.GroupingRequest.EventGroupId;
import org.apache.apex.engine.plugin.ApexPluginDispatcher;
import org.apache.apex.engine.plugin.DefaultApexPluginDispatcher;
import org.apache.apex.engine.plugin.loaders.ChainedPluginLocator;
import org.apache.apex.engine.plugin.loaders.PropertyBasedPluginLocator;
import org.apache.apex.engine.plugin.loaders.ServiceLoaderBasedPluginLocator;
import org.apache.apex.engine.security.TokenRenewer;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang3.tuple.MutablePair;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.service.CompositeService;
import org.apache.hadoop.yarn.api.ApplicationConstants;
import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse;
import org.apache.hadoop.yarn.api.protocolrecords.FinishApplicationMasterRequest;
import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterResponse;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.api.records.Container;
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.FinalApplicationStatus;
import org.apache.hadoop.yarn.client.api.AMRMClient;
import org.apache.hadoop.yarn.client.api.AMRMClient.ContainerRequest;
import org.apache.hadoop.yarn.client.api.YarnClient;
import org.apache.hadoop.yarn.client.api.async.NMClientAsync;
import org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
import org.apache.hadoop.yarn.util.Clock;
import org.apache.hadoop.yarn.util.Records;
import org.apache.hadoop.yarn.util.SystemClock;
import org.apache.hadoop.yarn.webapp.WebApp;
import org.apache.hadoop.yarn.webapp.WebApps;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import com.datatorrent.api.Attribute;
import com.datatorrent.api.AutoMetric;
import com.datatorrent.api.Context;
import com.datatorrent.api.Context.DAGContext;
import com.datatorrent.api.DAG;
import com.datatorrent.api.StringCodec;
import com.datatorrent.stram.StreamingContainerAgent.ContainerStartRequest;
import com.datatorrent.stram.StreamingContainerManager.ContainerResource;
import com.datatorrent.stram.api.AppDataSource;
import com.datatorrent.stram.api.BaseContext;
import com.datatorrent.stram.api.StramEvent;
import com.datatorrent.stram.appdata.AppDataPushAgent;
import com.datatorrent.stram.client.StramClientUtils;
import com.datatorrent.stram.engine.StreamingContainer;
import com.datatorrent.stram.plan.logical.LogicalPlan;
import com.datatorrent.stram.plan.physical.OperatorStatus.PortStatus;
import com.datatorrent.stram.plan.physical.PTContainer;
import com.datatorrent.stram.plan.physical.PTOperator;
import com.datatorrent.stram.security.StramDelegationTokenIdentifier;
import com.datatorrent.stram.security.StramDelegationTokenManager;
import com.datatorrent.stram.util.ConfigUtils;
import com.datatorrent.stram.util.SecurityUtils;
import com.datatorrent.stram.webapp.AppInfo;
import com.datatorrent.stram.webapp.StramWebApp;
import static java.lang.Thread.sleep;
/**
* Streaming Application Master
*
* @since 0.3.2
*/
public class StreamingAppMasterService extends CompositeService
{
private static final Logger LOG = LoggerFactory.getLogger(StreamingAppMasterService.class);
private static final long DELEGATION_KEY_UPDATE_INTERVAL = 24 * 60 * 60 * 1000;
private static final long DELEGATION_TOKEN_MAX_LIFETIME = Long.MAX_VALUE / 2;
private static final long DELEGATION_TOKEN_RENEW_INTERVAL = Long.MAX_VALUE / 2;
private static final long DELEGATION_TOKEN_REMOVER_SCAN_INTERVAL = 24 * 60 * 60 * 1000;
private static final int UPDATE_NODE_REPORTS_INTERVAL = 10 * 60 * 1000;
private AMRMClient<ContainerRequest> amRmClient;
private NMClientAsync nmClient;
private LogicalPlan dag;
// Application Attempt Id ( combination of attemptId and fail count )
private final ApplicationAttemptId appAttemptID;
// Hostname of the container
private final String appMasterHostname = "";
// Tracking url to which app master publishes info for clients to monitor
private String appMasterTrackingUrl = "";
// Simple flag to denote whether all works is done
private boolean appDone = false;
// Counter for completed containers ( complete denotes successful or failed )
private final AtomicInteger numCompletedContainers = new AtomicInteger();
// Containers that the RM has allocated to us
private final ConcurrentMap<String, AllocatedContainer> allocatedContainers = Maps.newConcurrentMap();
// Set of nodes marked blacklisted due to consecutive container failures on the nodes
private final Set<String> failedBlackListedNodes = Sets.newHashSet();
// Maintains max consecutive failures stats for nodes for blacklisting failing nodes
private final Map<String, NodeFailureStats> failedContainerNodesMap = Maps.newHashMap();
// Count of failed containers
private final AtomicInteger numFailedContainers = new AtomicInteger();
private final ConcurrentLinkedQueue<Runnable> pendingTasks = new ConcurrentLinkedQueue<>();
// child container callback
private StreamingContainerParent heartbeatListener;
private StreamingContainerManager dnmgr;
private StramAppContext appContext;
private final Clock clock = new SystemClock();
private final long startTime = clock.getTime();
private final ClusterAppStats stats = new ClusterAppStats();
private StramDelegationTokenManager delegationTokenManager = null;
private AppDataPushAgent appDataPushAgent;
private ApexPluginDispatcher apexPluginDispatcher;
private final GroupingManager groupingManager = GroupingManager.getGroupingManagerInstance();
private static final long REMOVE_CONTAINER_TIMEOUT = PropertiesHelper.getLong("org.apache.apex.nodemanager.containerKill.timeout", 30 * 1000, 0, Long.MAX_VALUE);
private TokenRenewer tokenRenewer;
public StreamingAppMasterService(ApplicationAttemptId appAttemptID)
{
super(StreamingAppMasterService.class.getName());
this.appAttemptID = appAttemptID;
}
private class NodeFailureStats
{
long lastFailureTimeStamp;
int failureCount;
long blackListAdditionTime;
public NodeFailureStats(long lastFailureTimeStamp, int failureCount)
{
this.lastFailureTimeStamp = lastFailureTimeStamp;
this.failureCount = failureCount;
}
}
/**
* Overrides getters to pull live info.
*/
protected class ClusterAppStats extends AppInfo.AppStats
{
@AutoMetric
@Override
public int getAllocatedContainers()
{
return allocatedContainers.size();
}
@AutoMetric
@Override
public int getPlannedContainers()
{
return dnmgr.getPhysicalPlan().getContainers().size();
}
@AutoMetric
@Override
@XmlElement
public int getFailedContainers()
{
return numFailedContainers.get();
}
@AutoMetric
@Override
public int getNumOperators()
{
return dnmgr.getPhysicalPlan().getAllOperators().size();
}
@Override
public long getCurrentWindowId()
{
long min = Long.MAX_VALUE;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
long windowId = entry.getValue().stats.currentWindowId.get();
if (min > windowId) {
min = windowId;
}
}
return StreamingContainerManager.toWsWindowId(min == Long.MAX_VALUE ? 0 : min);
}
@Override
public long getRecoveryWindowId()
{
return StreamingContainerManager.toWsWindowId(dnmgr.getCommittedWindowId());
}
@AutoMetric
@Override
public long getTuplesProcessedPSMA()
{
long result = 0;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
result += entry.getValue().stats.tuplesProcessedPSMA.get();
}
return result;
}
@AutoMetric
@Override
public long getTotalTuplesProcessed()
{
long result = 0;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
result += entry.getValue().stats.totalTuplesProcessed.get();
}
return result;
}
@AutoMetric
@Override
public long getTuplesEmittedPSMA()
{
long result = 0;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
result += entry.getValue().stats.tuplesEmittedPSMA.get();
}
return result;
}
@AutoMetric
@Override
public long getTotalTuplesEmitted()
{
long result = 0;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
result += entry.getValue().stats.totalTuplesEmitted.get();
}
return result;
}
@AutoMetric
@Override
public long getTotalMemoryAllocated()
{
long result = 0;
for (PTContainer c : dnmgr.getPhysicalPlan().getContainers()) {
result += c.getAllocatedMemoryMB();
}
return result;
}
@AutoMetric
@Override
public long getMemoryRequired()
{
long result = 0;
for (PTContainer c : dnmgr.getPhysicalPlan().getContainers()) {
if (c.getExternalId() == null || c.getState() == PTContainer.State.KILLED) {
result += c.getRequiredMemoryMB();
}
}
return result;
}
@AutoMetric
@Override
public int getTotalVCoresAllocated()
{
int result = 0;
for (PTContainer c : dnmgr.getPhysicalPlan().getContainers()) {
result += c.getAllocatedVCores();
}
return result;
}
@AutoMetric
@Override
public int getVCoresRequired()
{
int result = 0;
for (PTContainer c : dnmgr.getPhysicalPlan().getContainers()) {
if (c.getExternalId() == null || c.getState() == PTContainer.State.KILLED) {
if (c.getRequiredVCores() == 0) {
result++;
} else {
result += c.getRequiredVCores();
}
}
}
return result;
}
@AutoMetric
@Override
public long getTotalBufferServerReadBytesPSMA()
{
long result = 0;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
for (Map.Entry<String, PortStatus> portEntry : entry.getValue().stats.inputPortStatusList.entrySet()) {
result += portEntry.getValue().bufferServerBytesPMSMA.getAvg() * 1000;
}
}
return result;
}
@AutoMetric
@Override
public long getTotalBufferServerWriteBytesPSMA()
{
long result = 0;
for (Map.Entry<Integer, PTOperator> entry : dnmgr.getPhysicalPlan().getAllOperators().entrySet()) {
for (Map.Entry<String, PortStatus> portEntry : entry.getValue().stats.outputPortStatusList.entrySet()) {
result += portEntry.getValue().bufferServerBytesPMSMA.getAvg() * 1000;
}
}
return result;
}
@Override
public List<Integer> getCriticalPath()
{
StreamingContainerManager.CriticalPathInfo criticalPathInfo = dnmgr.getCriticalPathInfo();
return (criticalPathInfo == null) ? null : criticalPathInfo.path;
}
@AutoMetric
@Override
public long getLatency()
{
StreamingContainerManager.CriticalPathInfo criticalPathInfo = dnmgr.getCriticalPathInfo();
return (criticalPathInfo == null) ? 0 : criticalPathInfo.latency;
}
@Override
public long getWindowStartMillis()
{
return dnmgr.getWindowStartMillis();
}
}
private class ClusterAppContextImpl extends BaseContext implements StramAppContext
{
private ClusterAppContextImpl()
{
super(null, null);
}
ClusterAppContextImpl(Attribute.AttributeMap attributes)
{
super(attributes, null);
}
@Override
public ApplicationId getApplicationID()
{
return appAttemptID.getApplicationId();
}
@Override
public ApplicationAttemptId getApplicationAttemptId()
{
return appAttemptID;
}
@Override
public String getApplicationName()
{
return getValue(LogicalPlan.APPLICATION_NAME);
}
@Override
public String getApplicationDocLink()
{
return getValue(LogicalPlan.APPLICATION_DOC_LINK);
}
@Override
public long getStartTime()
{
return startTime;
}
@Override
public String getApplicationPath()
{
return getValue(LogicalPlan.APPLICATION_PATH);
}
@Override
public CharSequence getUser()
{
return System.getenv(ApplicationConstants.Environment.USER.toString());
}
@Override
public Clock getClock()
{
return clock;
}
@Override
public String getAppMasterTrackingUrl()
{
return appMasterTrackingUrl;
}
@Override
public ClusterAppStats getStats()
{
return stats;
}
@Override
public String getGatewayAddress()
{
return getValue(LogicalPlan.GATEWAY_CONNECT_ADDRESS);
}
@Override
public boolean isGatewayConnected()
{
if (StreamingAppMasterService.this.dnmgr != null) {
return StreamingAppMasterService.this.dnmgr.isGatewayConnected();
}
return false;
}
@Override
public List<AppDataSource> getAppDataSources()
{
if (StreamingAppMasterService.this.dnmgr != null) {
return StreamingAppMasterService.this.dnmgr.getAppDataSources();
}
return null;
}
@Override
public Map<String, Object> getMetrics()
{
if (StreamingAppMasterService.this.dnmgr != null) {
return (Map)StreamingAppMasterService.this.dnmgr.getLatestLogicalMetrics();
}
return null;
}
@SuppressWarnings("FieldNameHidesFieldInSuperclass")
private static final long serialVersionUID = 201309112304L;
}
/**
* Dump out contents of $CWD and the environment to stdout for debugging
*/
@SuppressWarnings("UseOfSystemOutOrSystemErr")
public void dumpOutDebugInfo()
{
LOG.info("Dump debug output");
Map<String, String> envs = System.getenv();
LOG.info("\nDumping System Env: begin");
for (Map.Entry<String, String> env : envs.entrySet()) {
LOG.info("System env: key=" + env.getKey() + ", val=" + env.getValue());
}
LOG.info("Dumping System Env: end");
String cmd = "ls -al";
Runtime run = Runtime.getRuntime();
Process pr;
try {
pr = run.exec(cmd);
pr.waitFor();
BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream()));
String line;
LOG.info("\nDumping files in local dir: begin");
try {
while ((line = buf.readLine()) != null) {
LOG.info("System CWD content: " + line);
}
LOG.info("Dumping files in local dir: end");
} finally {
buf.close();
}
} catch (IOException e) {
LOG.debug("Exception", e);
} catch (InterruptedException e) {
LOG.info("Interrupted", e);
}
LOG.info("Classpath: {}", System.getProperty("java.class.path"));
LOG.info("Config resources: {}", getConfig().toString());
try {
// find a better way of logging this using the logger.
Configuration.dumpConfiguration(getConfig(), new PrintWriter(System.out));
} catch (Exception e) {
LOG.error("Error dumping configuration.", e);
}
}
@Override
protected void serviceInit(Configuration conf) throws Exception
{
LOG.info("Application master" + ", appId=" + appAttemptID.getApplicationId().getId() + ", clustertimestamp=" + appAttemptID.getApplicationId().getClusterTimestamp() + ", attemptId=" + appAttemptID.getAttemptId());
FileInputStream fis = new FileInputStream("./" + LogicalPlan.SER_FILE_NAME);
try {
this.dag = LogicalPlan.read(fis);
} finally {
fis.close();
}
// "debug" simply dumps all data using LOG.info
if (dag.isDebug()) {
dumpOutDebugInfo();
}
dag.setAttribute(LogicalPlan.APPLICATION_ATTEMPT_ID, appAttemptID.getAttemptId());
FSRecoveryHandler recoveryHandler = new FSRecoveryHandler(dag.assertAppPath(), conf);
this.dnmgr = StreamingContainerManager.getInstance(recoveryHandler, dag, true);
dag = this.dnmgr.getLogicalPlan();
this.appContext = new ClusterAppContextImpl(dag.getAttributes());
Map<Class<?>, Class<? extends StringCodec<?>>> codecs = dag.getAttributes().get(DAG.STRING_CODECS);
StringCodecs.loadConverters(codecs);
LOG.info("Starting application with {} operators in {} containers", dnmgr.getPhysicalPlan().getAllOperators().size(), dnmgr.getPhysicalPlan().getContainers().size());
// Setup security configuration such as that for web security
SecurityUtils.init(conf, dag.getValue(LogicalPlan.STRAM_HTTP_AUTHENTICATION));
if (UserGroupInformation.isSecurityEnabled()) {
// TODO :- Need to perform token renewal
delegationTokenManager = new StramDelegationTokenManager(DELEGATION_KEY_UPDATE_INTERVAL, DELEGATION_TOKEN_MAX_LIFETIME, DELEGATION_TOKEN_RENEW_INTERVAL, DELEGATION_TOKEN_REMOVER_SCAN_INTERVAL);
}
this.nmClient = new NMClientAsyncImpl(new NMCallbackHandler());
addService(nmClient);
this.amRmClient = AMRMClient.createAMRMClient();
addService(amRmClient);
// start RPC server
int rpcListenerCount = dag.getValue(DAGContext.HEARTBEAT_LISTENER_THREAD_COUNT);
this.heartbeatListener = new StreamingContainerParent(this.getClass().getName(), dnmgr, delegationTokenManager, rpcListenerCount);
addService(heartbeatListener);
AutoMetric.Transport appDataPushTransport = dag.getValue(LogicalPlan.METRICS_TRANSPORT);
if (appDataPushTransport != null) {
this.appDataPushAgent = new AppDataPushAgent(dnmgr, appContext);
addService(this.appDataPushAgent);
}
initApexPluginDispatcher();
// Initialize all services added above
super.serviceInit(conf);
}
public static final String PLUGINS_CONF_KEY = "apex.plugin.stram.plugins";
public static final String PLUGINS_CONF_SEP = ",";
private void initApexPluginDispatcher()
{
PluginLocator<DAGExecutionPlugin> locator = new ChainedPluginLocator<>(new ServiceLoaderBasedPluginLocator<>(DAGExecutionPlugin.class),
new PropertyBasedPluginLocator<>(DAGExecutionPlugin.class, PLUGINS_CONF_KEY));
apexPluginDispatcher = new DefaultApexPluginDispatcher(locator, appContext, dnmgr, stats);
dnmgr.apexPluginDispatcher = apexPluginDispatcher;
addService(apexPluginDispatcher);
apexPluginDispatcher.dispatch(new ApexPluginDispatcher.DAGChangeEvent(dnmgr.getLogicalPlan()));
}
@Override
protected void serviceStart() throws Exception
{
super.serviceStart();
if (UserGroupInformation.isSecurityEnabled()) {
delegationTokenManager.startThreads();
}
// write the connect address for containers to DFS
InetSocketAddress connectAddress = NetUtils.getConnectAddress(this.heartbeatListener.getAddress());
URI connectUri = RecoverableRpcProxy.toConnectURI(connectAddress);
FSRecoveryHandler recoveryHandler = new FSRecoveryHandler(dag.assertAppPath(), getConfig());
recoveryHandler.writeConnectUri(connectUri.toString());
// start web service
try {
org.mortbay.log.Log.setLog(null);
} catch (Throwable throwable) {
// SPOI-2687. As part of Pivotal Certification, we need to catch ClassNotFoundException as Pivotal was using
// Jetty 7 where as other distros are using Jetty 6.
// LOG.error("can't set the log to null: ", throwable);
}
try {
Configuration config = SecurityUtils.configureWebAppSecurity(getConfig(), dag.getValue(Context.DAGContext.SSL_CONFIG));
WebApp webApp = WebApps.$for("stram", StramAppContext.class, appContext, "ws").with(config).start(new StramWebApp(this.dnmgr));
LOG.info("Started web service at port: " + webApp.port());
// best effort to produce FQDN for the client to connect with
// (when SSL is enabled, it may be required to match the certificate)
connectAddress = NetUtils.getConnectAddress(webApp.getListenerAddress());
String hostname = connectAddress.getAddress().getCanonicalHostName();
if (hostname.equals(connectAddress.getAddress().getHostAddress())) {
// lookup didn't yield a name
hostname = connectAddress.getHostName();
}
appMasterTrackingUrl = hostname + ":" + webApp.port();
if (ConfigUtils.isSSLEnabled(config)) {
appMasterTrackingUrl = "https://" + appMasterTrackingUrl;
}
LOG.info("Setting tracking URL to: " + appMasterTrackingUrl);
} catch (Exception e) {
LOG.error("Webapps failed to start. Ignoring for now:", e);
}
}
@Override
protected void serviceStop() throws Exception
{
super.serviceStop();
if (UserGroupInformation.isSecurityEnabled()) {
delegationTokenManager.stopThreads();
}
if (nmClient != null) {
nmClient.stop();
}
if (amRmClient != null) {
amRmClient.stop();
}
if (dnmgr != null) {
dnmgr.teardown();
}
}
public boolean run() throws Exception
{
boolean status = true;
try {
StreamingContainer.eventloop.start();
execute();
} finally {
StreamingContainer.eventloop.stop();
}
return status;
}
/**
* Main run function for the application master
*
* @throws YarnException
*/
@SuppressWarnings("SleepWhileInLoop")
private void execute() throws YarnException, IOException
{
LOG.info("Starting ApplicationMaster");
final Configuration conf = getConfig();
if (UserGroupInformation.isSecurityEnabled()) {
tokenRenewer = new TokenRenewer(dag, true, conf, appAttemptID.getApplicationId().toString());
}
// Register self with ResourceManager
RegisterApplicationMasterResponse response = amRmClient.registerApplicationMaster(appMasterHostname, 0, appMasterTrackingUrl);
// Dump out information about cluster capability as seen by the resource manager
int maxMem = response.getMaximumResourceCapability().getMemory();
int maxVcores = response.getMaximumResourceCapability().getVirtualCores();
int minMem = conf.getInt("yarn.scheduler.minimum-allocation-mb", 0);
int minVcores = conf.getInt("yarn.scheduler.minimum-allocation-vcores", 0);
LOG.info("Max mem {}m, Min mem {}m, Max vcores {} and Min vcores {} capabililty of resources in this cluster ", maxMem, minMem, maxVcores, minVcores);
long blacklistRemovalTime = dag.getValue(DAGContext.BLACKLISTED_NODE_REMOVAL_TIME_MILLIS);
int maxConsecutiveContainerFailures = dag.getValue(DAGContext.MAX_CONSECUTIVE_CONTAINER_FAILURES_FOR_BLACKLIST);
LOG.info("Blacklist removal time in millis = {}, max consecutive node failure count = {}", blacklistRemovalTime, maxConsecutiveContainerFailures);
// for locality relaxation fall back
Map<StreamingContainerAgent.ContainerStartRequest, MutablePair<Integer, ContainerRequest>> requestedResources = Maps.newHashMap();
// Setup heartbeat emitter
// TODO poll RM every now and then with an empty request to let RM know that we are alive
// The heartbeat interval after which an AM is timed out by the RM is defined by a config setting:
// RM_AM_EXPIRY_INTERVAL_MS with default defined by DEFAULT_RM_AM_EXPIRY_INTERVAL_MS
// The allocate calls to the RM count as heartbeat so, for now, this additional heartbeat emitter
// is not required.
int loopCounter = -1;
long nodeReportUpdateTime = 0;
// keep track of already requested containers to not request them again while waiting for allocation
int numRequestedContainers = 0;
int numReleasedContainers = 0;
int nextRequestPriority = 0;
// Use override for resource requestor in case of cloudera distribution, to handle host specific requests
ResourceRequestHandler resourceRequestor = System.getenv().containsKey("CDH_HADOOP_BIN") ? new BlacklistBasedResourceRequestHandler() : new ResourceRequestHandler();
List<ContainerStartRequest> pendingContainerStartRequests = new LinkedList<>();
try (YarnClient clientRMService = StramClientUtils.createYarnClient(conf)) {
try {
// YARN-435
// we need getClusterNodes to populate the initial node list,
// subsequent updates come through the heartbeat response
ApplicationReport ar = StramClientUtils.getStartedAppInstanceByName(clientRMService, dag.getAttributes().get(DAG.APPLICATION_NAME), UserGroupInformation.getLoginUser().getUserName(), dag.getAttributes().get(DAG.APPLICATION_ID));
if (ar != null) {
appDone = true;
dnmgr.shutdownDiagnosticsMessage = String.format("Application master failed due to application %s with duplicate application name \"%s\" by the same user \"%s\" is already started.",
ar.getApplicationId().toString(), ar.getName(), ar.getUser());
LOG.info("Forced shutdown due to {}", dnmgr.shutdownDiagnosticsMessage);
finishApplication(FinalApplicationStatus.FAILED);
return;
}
resourceRequestor.updateNodeReports(clientRMService.getNodeReports());
nodeReportUpdateTime = System.currentTimeMillis() + UPDATE_NODE_REPORTS_INTERVAL;
} catch (Exception e) {
throw new RuntimeException("Failed to retrieve cluster nodes report.", e);
}
List<Container> containers = response.getContainersFromPreviousAttempts();
// Running containers might take a while to register with the new app master and send the heartbeat signal.
int waitForRecovery = containers.size() > 0 ? dag.getValue(LogicalPlan.HEARTBEAT_TIMEOUT_MILLIS) / 1000 : 0;
List<ContainerId> releasedContainers = previouslyAllocatedContainers(containers);
FinalApplicationStatus finalStatus = FinalApplicationStatus.SUCCEEDED;
final InetSocketAddress rmAddress = conf.getSocketAddr(YarnConfiguration.RM_ADDRESS,
YarnConfiguration.DEFAULT_RM_ADDRESS,
YarnConfiguration.DEFAULT_RM_PORT);
while (!appDone) {
loopCounter++;
final long currentTimeMillis = System.currentTimeMillis();
if (tokenRenewer != null) {
tokenRenewer.checkAndRenew();
}
if (currentTimeMillis > nodeReportUpdateTime) {
resourceRequestor.updateNodeReports(clientRMService.getNodeReports());
nodeReportUpdateTime = currentTimeMillis + UPDATE_NODE_REPORTS_INTERVAL;
}
Runnable r;
while ((r = this.pendingTasks.poll()) != null) {
r.run();
}
// log current state
/*
* LOG.info("Current application state: loop=" + loopCounter + ", appDone=" + appDone + ", total=" +
* numTotalContainers + ", requested=" + numRequestedContainers + ", completed=" + numCompletedContainers +
* ", failed=" + numFailedContainers + ", currentAllocated=" + this.allAllocatedContainers.size());
*/
// Sleep before each loop when asking RM for containers
// to avoid flooding RM with spurious requests when it
// need not have any available containers
try {
sleep(1000);
} catch (InterruptedException e) {
LOG.info("Sleep interrupted", e);
}
// Setup request to be sent to RM to allocate containers
List<ContainerRequest> containerRequests = new ArrayList<>();
List<ContainerRequest> removedContainerRequests = new ArrayList<>();
// request containers for pending deploy requests
if (!dnmgr.containerStartRequests.isEmpty()) {
StreamingContainerAgent.ContainerStartRequest csr;
while ((csr = dnmgr.containerStartRequests.poll()) != null) {
if (csr.container.getRequiredMemoryMB() > maxMem) {
LOG.warn("Container memory {}m above max threshold of cluster. Using max value {}m.", csr.container.getRequiredMemoryMB(), maxMem);
csr.container.setRequiredMemoryMB(maxMem);
}
if (csr.container.getRequiredMemoryMB() < minMem) {
csr.container.setRequiredMemoryMB(minMem);
}
if (csr.container.getRequiredVCores() > maxVcores) {
LOG.warn("Container vcores {} above max threshold of cluster. Using max value {}.", csr.container.getRequiredVCores(), maxVcores);
csr.container.setRequiredVCores(maxVcores);
}
if (csr.container.getRequiredVCores() < minVcores) {
csr.container.setRequiredVCores(minVcores);
}
csr.container.setResourceRequestPriority(nextRequestPriority++);
ContainerRequest cr = resourceRequestor.createContainerRequest(csr, true);
if (cr == null) {
pendingContainerStartRequests.add(csr);
} else {
resourceRequestor.addContainerRequest(requestedResources, loopCounter, containerRequests, csr, cr);
}
}
}
// If all other requests are allocated, retry pending requests which need host availability
if (containerRequests.isEmpty() && !pendingContainerStartRequests.isEmpty()) {
List<ContainerStartRequest> removalList = new LinkedList<>();
for (ContainerStartRequest csr : pendingContainerStartRequests) {
ContainerRequest cr = resourceRequestor.createContainerRequest(csr, true);
if (cr != null) {
resourceRequestor.addContainerRequest(requestedResources, loopCounter, containerRequests, csr, cr);
removalList.add(csr);
}
}
pendingContainerStartRequests.removeAll(removalList);
}
resourceRequestor.reissueContainerRequests(amRmClient, requestedResources, loopCounter, resourceRequestor, containerRequests, removedContainerRequests);
/* Remove nodes from blacklist after timeout */
List<String> blacklistRemovals = new ArrayList<>();
for (String hostname : failedBlackListedNodes) {
Long timeDiff = currentTimeMillis - failedContainerNodesMap.get(hostname).blackListAdditionTime;
if (timeDiff >= blacklistRemovalTime) {
blacklistRemovals.add(hostname);
failedContainerNodesMap.remove(hostname);
}
}
if (!blacklistRemovals.isEmpty()) {
amRmClient.updateBlacklist(null, blacklistRemovals);
LOG.info("Removing nodes {} from blacklist: time elapsed since last blacklisting due to failure is greater than specified timeout", blacklistRemovals.toString());
failedBlackListedNodes.removeAll(blacklistRemovals);
}
numRequestedContainers += containerRequests.size() - removedContainerRequests.size();
AllocateResponse amResp = sendContainerAskToRM(containerRequests, removedContainerRequests, releasedContainers);
if (amResp.getAMCommand() != null) {
LOG.info(" statement executed:{}", amResp.getAMCommand());
switch (amResp.getAMCommand()) {
case AM_RESYNC:
case AM_SHUTDOWN:
throw new YarnRuntimeException("Received the " + amResp.getAMCommand() + " command from RM");
default:
throw new YarnRuntimeException("Received the " + amResp.getAMCommand() + " command from RM");
}
}
releasedContainers.clear();
// Retrieve list of allocated containers from the response
List<Container> newAllocatedContainers = amResp.getAllocatedContainers();
// LOG.info("Got response from RM for container ask, allocatedCnt=" + newAllocatedContainers.size());
numRequestedContainers -= newAllocatedContainers.size();
long timestamp = System.currentTimeMillis();
for (Container allocatedContainer : newAllocatedContainers) {
LOG.info("Got new container." + ", containerId=" + allocatedContainer.getId() + ", containerNode=" + allocatedContainer.getNodeId() + ", containerNodeURI=" + allocatedContainer.getNodeHttpAddress() + ", containerResourceMemory" + allocatedContainer.getResource().getMemory() + ", priority" + allocatedContainer.getPriority());
// + ", containerToken" + allocatedContainer.getContainerToken().getIdentifier().toString());
boolean alreadyAllocated = true;
StreamingContainerAgent.ContainerStartRequest csr = null;
for (Map.Entry<StreamingContainerAgent.ContainerStartRequest, MutablePair<Integer, ContainerRequest>> entry : requestedResources.entrySet()) {
if (entry.getKey().container.getResourceRequestPriority() == allocatedContainer.getPriority().getPriority()) {
alreadyAllocated = false;
csr = entry.getKey();
break;
}
}
if (alreadyAllocated) {
LOG.info("Releasing {} as resource with priority {} was already assigned", allocatedContainer.getId(), allocatedContainer.getPriority());
releasedContainers.add(allocatedContainer.getId());
numReleasedContainers++;
numRequestedContainers++; // undo the decrement above for this allocated container
continue;
}
if (csr != null) {
requestedResources.remove(csr);
}
// allocate resource to container
ContainerResource resource = new ContainerResource(allocatedContainer.getPriority().getPriority(), allocatedContainer.getId().toString(), allocatedContainer.getNodeId().toString(), allocatedContainer.getResource().getMemory(), allocatedContainer.getResource().getVirtualCores(), allocatedContainer.getNodeHttpAddress());
StreamingContainerAgent sca = dnmgr.assignContainer(resource, null);
if (sca == null) {
// allocated container no longer needed, add release request
LOG.warn("Container {} allocated but nothing to deploy, going to release this container.", allocatedContainer.getId());
releasedContainers.add(allocatedContainer.getId());
} else {
AllocatedContainer allocatedContainerHolder = new AllocatedContainer(allocatedContainer);
this.allocatedContainers.put(allocatedContainer.getId().toString(), allocatedContainerHolder);
ByteBuffer tokens = null;
if (UserGroupInformation.isSecurityEnabled()) {
UserGroupInformation ugi = UserGroupInformation.getLoginUser();
Token<StramDelegationTokenIdentifier> delegationToken = allocateDelegationToken(ugi.getUserName(), heartbeatListener.getAddress());
allocatedContainerHolder.delegationToken = delegationToken;
//ByteBuffer tokens = LaunchContainerRunnable.getTokens(delegationTokenManager, heartbeatListener.getAddress());
tokens = LaunchContainerRunnable.getTokens(ugi, delegationToken);
}
LaunchContainerRunnable launchContainer = new LaunchContainerRunnable(allocatedContainer, nmClient, sca, tokens);
// Thread launchThread = new Thread(runnableLaunchContainer);
// launchThreads.add(launchThread);
// launchThread.start();
launchContainer.run(); // communication with NMs is now async
// record container start event
StramEvent ev = new StramEvent.StartContainerEvent(allocatedContainer.getId().toString(),
allocatedContainer.getNodeId().toString(), groupingManager.getEventGroupIdForAffectedContainer(allocatedContainer.getId().toString()));
ev.setTimestamp(timestamp);
dnmgr.recordEventAsync(ev);
}
}
// track node updates for future locality constraint allocations
// TODO: it seems 2.0.4-alpha doesn't give us any updates
resourceRequestor.updateNodeReports(amResp.getUpdatedNodes());
// Check the completed containers
List<ContainerStatus> completedContainers = amResp.getCompletedContainersStatuses();
// LOG.debug("Got response from RM for container ask, completedCnt=" + completedContainers.size());
List<String> blacklistAdditions = new ArrayList<>();
for (ContainerStatus containerStatus : completedContainers) {
LOG.info("Completed containerId=" + containerStatus.getContainerId() + ", state=" + containerStatus.getState() + ", exitStatus=" + containerStatus.getExitStatus() + ", diagnostics=" + containerStatus.getDiagnostics());
// non complete containers should not be here
assert (containerStatus.getState() == ContainerState.COMPLETE);
AllocatedContainer allocatedContainer = allocatedContainers.remove(containerStatus.getContainerId().toString());
if (allocatedContainer != null && allocatedContainer.delegationToken != null) {
UserGroupInformation ugi = UserGroupInformation.getLoginUser();
delegationTokenManager.cancelToken(allocatedContainer.delegationToken, ugi.getUserName());
}
EventGroupId groupId = null;
int exitStatus = containerStatus.getExitStatus();
if (0 != exitStatus) {
if (allocatedContainer != null) {
numFailedContainers.incrementAndGet();
if (exitStatus != 1 && maxConsecutiveContainerFailures != Integer.MAX_VALUE) {
// If container failure due to framework
String hostname = allocatedContainer.container.getNodeId().getHost();
if (!failedBlackListedNodes.contains(hostname)) {
// Blacklist the node if not already blacklisted
if (failedContainerNodesMap.containsKey(hostname)) {
NodeFailureStats stats = failedContainerNodesMap.get(hostname);
long timeStamp = System.currentTimeMillis();
if (timeStamp - stats.lastFailureTimeStamp >= blacklistRemovalTime) {
// Reset failure count if last failure was before Blacklist removal time
stats.failureCount = 1;
stats.lastFailureTimeStamp = timeStamp;
} else {
stats.lastFailureTimeStamp = timeStamp;
stats.failureCount++;
if (stats.failureCount >= maxConsecutiveContainerFailures) {
LOG.info("Node {} failed {} times consecutively within {} minutes, marking the node blacklisted", hostname, stats.failureCount, blacklistRemovalTime / (60 * 1000));
blacklistAdditions.add(hostname);
failedBlackListedNodes.add(hostname);
}
}
} else {
failedContainerNodesMap.put(hostname, new NodeFailureStats(System.currentTimeMillis(), 1));
}
}
}
}
// if (exitStatus == 1) {
// // non-recoverable StreamingContainer failure
// appDone = true;
// finalStatus = FinalApplicationStatus.FAILED;
// dnmgr.shutdownDiagnosticsMessage = "Unrecoverable failure " + containerStatus.getContainerId();
// LOG.info("Exiting due to: {}", dnmgr.shutdownDiagnosticsMessage);
// }
// else {
// Recoverable failure or process killed (externally or via stop request by AM)
// also occurs when a container was released by the application but never assigned/launched
LOG.debug("Container {} failed or killed.", containerStatus.getContainerId());
String containerIdStr = containerStatus.getContainerId().toString();
dnmgr.scheduleContainerRestart(containerIdStr);
groupId = groupingManager.getEventGroupIdForAffectedContainer(containerIdStr);
// }
} else {
// container completed successfully
numCompletedContainers.incrementAndGet();
LOG.info("Container completed successfully." + ", containerId=" + containerStatus.getContainerId());
// Reset counter for node failure, if exists
String hostname = allocatedContainer.container.getNodeId().getHost();
NodeFailureStats stats = failedContainerNodesMap.get(hostname);
if (stats != null) {
stats.failureCount = 0;
}
}
String containerIdStr = containerStatus.getContainerId().toString();
dnmgr.removeContainerAgent(containerIdStr);
// record container stop event
StramEvent ev = new StramEvent.StopContainerEvent(containerIdStr, containerStatus.getExitStatus(), groupId);
ev.setReason(containerStatus.getDiagnostics());
dnmgr.recordEventAsync(ev);
}
if (!blacklistAdditions.isEmpty()) {
amRmClient.updateBlacklist(blacklistAdditions, null);
long timeStamp = System.currentTimeMillis();
for (String hostname : blacklistAdditions) {
NodeFailureStats stats = failedContainerNodesMap.get(hostname);
stats.blackListAdditionTime = timeStamp;
}
}
if (dnmgr.forcedShutdown) {
LOG.info("Forced shutdown due to {}", dnmgr.shutdownDiagnosticsMessage);
finalStatus = FinalApplicationStatus.FAILED;
appDone = true;
} else if (allocatedContainers.isEmpty() && numRequestedContainers == 0 && dnmgr.containerStartRequests.isEmpty()) {
LOG.debug("Exiting as no more containers are allocated or requested");
finalStatus = FinalApplicationStatus.SUCCEEDED;
appDone = true;
}
LOG.debug("Current application state: loop={}, appDone={}, requested={}, released={}, completed={}, failed={}, currentAllocated={}, dnmgr.containerStartRequests={}",
loopCounter, appDone, numRequestedContainers, numReleasedContainers, numCompletedContainers, numFailedContainers, allocatedContainers.size(), dnmgr.containerStartRequests);
// monitor child containers
dnmgr.monitorHeartbeat(waitForRecovery > 0);
waitForRecovery = Math.max(waitForRecovery - 1, 0);
}
finishApplication(finalStatus);
}
}
private void finishApplication(FinalApplicationStatus finalStatus) throws YarnException, IOException
{
LOG.info("Application completed. Signalling finish to RM");
FinishApplicationMasterRequest finishReq = Records.newRecord(FinishApplicationMasterRequest.class);
finishReq.setFinalApplicationStatus(finalStatus);
if (finalStatus != FinalApplicationStatus.SUCCEEDED) {
String diagnostics = "Diagnostics." + " completed=" + numCompletedContainers.get() + ", allocated=" + allocatedContainers.size() + ", failed=" + numFailedContainers.get();
if (!StringUtils.isEmpty(dnmgr.shutdownDiagnosticsMessage)) {
diagnostics += "\n";
diagnostics += dnmgr.shutdownDiagnosticsMessage;
}
// YARN-208 - as of 2.0.1-alpha dropped by the RM
finishReq.setDiagnostics(diagnostics);
// expected termination of the master process
// application status and diagnostics message are set above
}
LOG.info("diagnostics: " + finishReq.getDiagnostics());
amRmClient.unregisterApplicationMaster(finishReq.getFinalApplicationStatus(), finishReq.getDiagnostics(), null);
}
private Token<StramDelegationTokenIdentifier> allocateDelegationToken(String username, InetSocketAddress address)
{
StramDelegationTokenIdentifier identifier = new StramDelegationTokenIdentifier(new Text(username), new Text(""), new Text(""));
String service = address.getAddress().getHostAddress() + ":" + address.getPort();
Token<StramDelegationTokenIdentifier> stramToken = new Token<>(identifier, delegationTokenManager);
stramToken.setService(new Text(service));
return stramToken;
}
/**
* Check for containers that were allocated in a previous attempt.
* If the containers are still alive, wait for them to check in via heartbeat.
*/
private List<ContainerId> previouslyAllocatedContainers(List<Container> containersListByYarn)
{
List<ContainerId> containersToRelease = new ArrayList<>();
if (containersListByYarn.size() != 0) {
LOG.debug("Containers list by YARN - {}", containersListByYarn);
LOG.debug("Containers list by Streaming Container Manger - {}", dnmgr.getPhysicalPlan().getContainers());
Map<String, Container> fromYarn = new HashMap<>();
for (Container container : containersListByYarn) {
fromYarn.put(container.getId().toString(), container);
}
for (PTContainer ptContainer : dnmgr.getPhysicalPlan().getContainers()) {
String containerId = ptContainer.getExternalId();
// SCM starts the container without external ID.
if (containerId == null) {
continue;
}
Container container = fromYarn.get(containerId);
if (container != null) {
allocatedContainers.put(containerId, new AllocatedContainer(container));
fromYarn.remove(containerId);
} else {
dnmgr.scheduleContainerRestart(containerId);
}
}
for (Container container : fromYarn.values()) {
containersToRelease.add(container.getId());
}
if (fromYarn.size() != 0) {
LOG.info("Containers list returned by YARN, has the following container(s) which are not present in PhysicalPlan {}", fromYarn);
}
} else {
dnmgr.deployAfterRestart();
}
return containersToRelease;
}
/**
* Ask RM to allocate given no. of containers to this Application Master
*
* @param containerRequests Containers to ask for from RM
* @param removedContainerRequests Container requests to be removed
* @param releasedContainers
* @return Response from RM to AM with allocated containers
* @throws YarnException
*/
private AllocateResponse sendContainerAskToRM(List<ContainerRequest> containerRequests, List<ContainerRequest> removedContainerRequests, List<ContainerId> releasedContainers) throws YarnException, IOException
{
if (removedContainerRequests.size() > 0) {
LOG.debug("Removing container request: {}", removedContainerRequests);
for (ContainerRequest cr : removedContainerRequests) {
amRmClient.removeContainerRequest(cr);
}
}
if (containerRequests.size() > 0) {
LOG.debug("Asking RM for containers: {}", containerRequests);
for (ContainerRequest cr : containerRequests) {
amRmClient.addContainerRequest(cr);
}
}
for (ContainerId containerId : releasedContainers) {
LOG.info("Released container, id={}", containerId.getId());
amRmClient.releaseAssignedContainer(containerId);
}
for (String containerIdStr : dnmgr.containerStopRequests.values()) {
AllocatedContainer allocatedContainer = this.allocatedContainers.get(containerIdStr);
if (allocatedContainer != null) {
allocatedContainer.stop(nmClient);
}
dnmgr.containerStopRequests.remove(containerIdStr);
}
for (Map.Entry<String, AllocatedContainer> entry : allocatedContainers.entrySet()) {
if (entry.getValue().checkStopRequestedTimeout()) {
LOG.info("Timeout happened for NodeManager kill container request, recovering the container {} without waiting", entry.getKey());
recoverHelper(entry.getKey());
}
}
return amRmClient.allocate(0);
}
private class NMCallbackHandler implements NMClientAsync.CallbackHandler
{
NMCallbackHandler()
{
}
@Override
public void onContainerStopped(ContainerId containerId)
{
LOG.debug("Succeeded to stop Container {}", containerId);
}
@Override
public void onContainerStatusReceived(ContainerId containerId, ContainerStatus containerStatus)
{
LOG.debug("Container Status: id={}, status={}", containerId, containerStatus);
if (containerStatus.getState() != ContainerState.RUNNING) {
recoverContainer(containerId);
}
}
@Override
public void onContainerStarted(ContainerId containerId, Map<String, ByteBuffer> allServiceResponse)
{
LOG.debug("Succeeded to start Container {}", containerId);
}
@Override
public void onStartContainerError(ContainerId containerId, Throwable t)
{
LOG.error("Start container failed for: containerId={}", containerId, t);
}
@Override
public void onGetContainerStatusError(ContainerId containerId, Throwable t)
{
LOG.error("Failed to query the status of {}", containerId, t);
// if the NM is not reachable, consider container lost and recover (occurs during AM recovery)
recoverContainer(containerId);
}
@Override
public void onStopContainerError(ContainerId containerId, Throwable t)
{
LOG.warn("Failed to stop container {}", containerId, t);
// container could not be stopped, we won't receive a stop event from AM heartbeat
// short circuit and schedule recovery directly
recoverContainer(containerId);
}
private void recoverContainer(final ContainerId containerId)
{
pendingTasks.add(new Runnable()
{
@Override
public void run()
{
recoverHelper(containerId.toString());
}
});
}
}
private void recoverHelper(final String containerId)
{
dnmgr.scheduleContainerRestart(containerId);
allocatedContainers.remove(containerId);
}
private static class AllocatedContainer
{
private final Container container;
private long stop = Long.MAX_VALUE;
private Token<StramDelegationTokenIdentifier> delegationToken;
private AllocatedContainer(Container c)
{
container = c;
}
public void stop(NMClientAsync nmClient)
{
if (stop == Long.MAX_VALUE) {
nmClient.stopContainerAsync(container.getId(), container.getNodeId());
LOG.info("Requested stop container {}", container.getId().toString());
stop = System.currentTimeMillis();
}
}
public boolean checkStopRequestedTimeout()
{
return System.currentTimeMillis() - stop > REMOVE_CONTAINER_TIMEOUT;
}
}
}
