我们在windows下的eclipse直接将mapReduce程序发送到hadoop集群，在集群上跑mapReduce程序。
1. 首先我们需要配置hadoop集群的参数
我们可以通过代码的方式进行配置，也可以从hadoop集群中直接下载配置文件
下载好的配置文件直接放在项目的src目录下面，注意一定是src目录，只有src目录才可以将源码中的配置文件覆盖。
2设置jar包的位置：
如果现在直接运行：
那么会报错的：
虽然报错了，但是可以看出，这个程序是运行在hadoop集群上的，而不是再本地运行的。
报错的原因是因为我们是在本地运行集群上的mapReduce，会遇到系统上的原因；
解决办法：
我们只需要改一个类就行：
YARNRunner
这个类最原始的代码：
/**
* 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.mapred;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Vector;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.ipc.ProtocolSignature;
import org.apache.hadoop.mapreduce.Cluster.JobTrackerStatus;
import org.apache.hadoop.mapreduce.ClusterMetrics;
import org.apache.hadoop.mapreduce.Counters;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.JobID;
import org.apache.hadoop.mapreduce.JobStatus;
import org.apache.hadoop.mapreduce.MRJobConfig;
import org.apache.hadoop.mapreduce.QueueAclsInfo;
import org.apache.hadoop.mapreduce.QueueInfo;
import org.apache.hadoop.mapreduce.TaskAttemptID;
import org.apache.hadoop.mapreduce.TaskCompletionEvent;
import org.apache.hadoop.mapreduce.TaskReport;
import org.apache.hadoop.mapreduce.TaskTrackerInfo;
import org.apache.hadoop.mapreduce.TaskType;
import org.apache.hadoop.mapreduce.TypeConverter;
import org.apache.hadoop.mapreduce.protocol.ClientProtocol;
import org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.mapreduce.v2.LogParams;
import org.apache.hadoop.mapreduce.v2.api.MRClientProtocol;
import org.apache.hadoop.mapreduce.v2.api.protocolrecords.GetDelegationTokenRequest;
import org.apache.hadoop.mapreduce.v2.jobhistory.JobHistoryUtils;
import org.apache.hadoop.mapreduce.v2.util.MRApps;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.authorize.AccessControlList;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.yarn.api.ApplicationConstants;
import org.apache.hadoop.yarn.api.ApplicationConstants.Environment;
import org.apache.hadoop.yarn.api.records.ApplicationAccessType;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
import org.apache.hadoop.yarn.api.records.LocalResource;
import org.apache.hadoop.yarn.api.records.LocalResourceType;
import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.URL;
import org.apache.hadoop.yarn.api.records.YarnApplicationState;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.factories.RecordFactory;
import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
import org.apache.hadoop.yarn.security.client.RMDelegationTokenSelector;
import org.apache.hadoop.yarn.util.ConverterUtils;
import com.google.common.annotations.VisibleForTesting;
/**
* This class enables the current JobClient (0.22 hadoop) to run on YARN.
*/
@SuppressWarnings("unchecked")
public class YARNRunner implements ClientProtocol {
private static final Log LOG = LogFactory.getLog(YARNRunner.class);
private final RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
private ResourceMgrDelegate resMgrDelegate;
private ClientCache clientCache;
private Configuration conf;
private final FileContext defaultFileContext;
/**
* Yarn runner incapsulates the client interface of
* yarn
* @param conf the configuration object for the client
*/
public YARNRunner(Configuration conf) {
this(conf, new ResourceMgrDelegate(new YarnConfiguration(conf)));
}
/**
* Similar to {@link #YARNRunner(Configuration)} but allowing injecting
* {@link ResourceMgrDelegate}. Enables mocking and testing.
* @param conf the configuration object for the client
* @param resMgrDelegate the resourcemanager client handle.
*/
public YARNRunner(Configuration conf, ResourceMgrDelegate resMgrDelegate) {
this(conf, resMgrDelegate, new ClientCache(conf, resMgrDelegate));
}
/**
* Similar to {@link YARNRunner#YARNRunner(Configuration, ResourceMgrDelegate)}
* but allowing injecting {@link ClientCache}. Enable mocking and testing.
* @param conf the configuration object
* @param resMgrDelegate the resource manager delegate
* @param clientCache the client cache object.
*/
public YARNRunner(Configuration conf, ResourceMgrDelegate resMgrDelegate,
ClientCache clientCache) {
this.conf = conf;
try {
this.resMgrDelegate = resMgrDelegate;
this.clientCache = clientCache;
this.defaultFileContext = FileContext.getFileContext(this.conf);
} catch (UnsupportedFileSystemException ufe) {
throw new RuntimeException("Error in instantiating YarnClient", ufe);
}
}
@Private
/**
* Used for testing mostly.
* @param resMgrDelegate the resource manager delegate to set to.
*/
public void setResourceMgrDelegate(ResourceMgrDelegate resMgrDelegate) {
this.resMgrDelegate = resMgrDelegate;
}
@Override
public void cancelDelegationToken(Token<DelegationTokenIdentifier> arg0)
throws IOException, InterruptedException {
throw new UnsupportedOperationException("Use Token.renew instead");
}
@Override
public TaskTrackerInfo[] getActiveTrackers() throws IOException,
InterruptedException {
return resMgrDelegate.getActiveTrackers();
}
@Override
public JobStatus[] getAllJobs() throws IOException, InterruptedException {
return resMgrDelegate.getAllJobs();
}
@Override
public TaskTrackerInfo[] getBlacklistedTrackers() throws IOException,
InterruptedException {
return resMgrDelegate.getBlacklistedTrackers();
}
@Override
public ClusterMetrics getClusterMetrics() throws IOException,
InterruptedException {
return resMgrDelegate.getClusterMetrics();
}
@VisibleForTesting
void addHistoryToken(Credentials ts) throws IOException, InterruptedException {
/* check if we have a hsproxy, if not, no need */
MRClientProtocol hsProxy = clientCache.getInitializedHSProxy();
if (UserGroupInformation.isSecurityEnabled() && (hsProxy != null)) {
/*
* note that get delegation token was called. Again this is hack for oozie
* to make sure we add history server delegation tokens to the credentials
*/
RMDelegationTokenSelector tokenSelector = new RMDelegationTokenSelector();
Text service = resMgrDelegate.getRMDelegationTokenService();
if (tokenSelector.selectToken(service, ts.getAllTokens()) != null) {
Text hsService = SecurityUtil.buildTokenService(hsProxy
.getConnectAddress());
if (ts.getToken(hsService) == null) {
ts.addToken(hsService, getDelegationTokenFromHS(hsProxy));
}
}
}
}
@VisibleForTesting
Token<?> getDelegationTokenFromHS(MRClientProtocol hsProxy)
throws IOException, InterruptedException {
GetDelegationTokenRequest request = recordFactory
.newRecordInstance(GetDelegationTokenRequest.class);
request.setRenewer(Master.getMasterPrincipal(conf));
org.apache.hadoop.yarn.api.records.Token mrDelegationToken;
mrDelegationToken = hsProxy.getDelegationToken(request)
.getDelegationToken();
return ConverterUtils.convertFromYarn(mrDelegationToken,
hsProxy.getConnectAddress());
}
@Override
public Token<DelegationTokenIdentifier> getDelegationToken(Text renewer)
throws IOException, InterruptedException {
// The token is only used for serialization. So the type information
// mismatch should be fine.
return resMgrDelegate.getDelegationToken(renewer);
}
@Override
public String getFilesystemName() throws IOException, InterruptedException {
return resMgrDelegate.getFilesystemName();
}
@Override
public JobID getNewJobID() throws IOException, InterruptedException {
return resMgrDelegate.getNewJobID();
}
@Override
public QueueInfo getQueue(String queueName) throws IOException,
InterruptedException {
return resMgrDelegate.getQueue(queueName);
}
@Override
public QueueAclsInfo[] getQueueAclsForCurrentUser() throws IOException,
InterruptedException {
return resMgrDelegate.getQueueAclsForCurrentUser();
}
@Override
public QueueInfo[] getQueues() throws IOException, InterruptedException {
return resMgrDelegate.getQueues();
}
@Override
public QueueInfo[] getRootQueues() throws IOException, InterruptedException {
return resMgrDelegate.getRootQueues();
}
@Override
public QueueInfo[] getChildQueues(String parent) throws IOException,
InterruptedException {
return resMgrDelegate.getChildQueues(parent);
}
@Override
public String getStagingAreaDir() throws IOException, InterruptedException {
return resMgrDelegate.getStagingAreaDir();
}
@Override
public String getSystemDir() throws IOException, InterruptedException {
return resMgrDelegate.getSystemDir();
}
@Override
public long getTaskTrackerExpiryInterval() throws IOException,
InterruptedException {
return resMgrDelegate.getTaskTrackerExpiryInterval();
}
@Override
public JobStatus submitJob(JobID jobId, String jobSubmitDir, Credentials ts)
throws IOException, InterruptedException {
addHistoryToken(ts);
// Construct necessary information to start the MR AM
ApplicationSubmissionContext appContext =
createApplicationSubmissionContext(conf, jobSubmitDir, ts);
// Submit to ResourceManager
try {
ApplicationId applicationId =
resMgrDelegate.submitApplication(appContext);
ApplicationReport appMaster = resMgrDelegate
.getApplicationReport(applicationId);
String diagnostics =
(appMaster == null ?
"application report is null" : appMaster.getDiagnostics());
if (appMaster == null
|| appMaster.getYarnApplicationState() == YarnApplicationState.FAILED
|| appMaster.getYarnApplicationState() == YarnApplicationState.KILLED) {
throw new IOException("Failed to run job : " +
diagnostics);
}
return clientCache.getClient(jobId).getJobStatus(jobId);
} catch (YarnException e) {
throw new IOException(e);
}
}
private LocalResource createApplicationResource(FileContext fs, Path p, LocalResourceType type)
throws IOException {
LocalResource rsrc = recordFactory.newRecordInstance(LocalResource.class);
FileStatus rsrcStat = fs.getFileStatus(p);
rsrc.setResource(ConverterUtils.getYarnUrlFromPath(fs
.getDefaultFileSystem().resolvePath(rsrcStat.getPath())));
rsrc.setSize(rsrcStat.getLen());
rsrc.setTimestamp(rsrcStat.getModificationTime());
rsrc.setType(type);
rsrc.setVisibility(LocalResourceVisibility.APPLICATION);
return rsrc;
}
public ApplicationSubmissionContext createApplicationSubmissionContext(
Configuration jobConf,
String jobSubmitDir, Credentials ts) throws IOException {
ApplicationId applicationId = resMgrDelegate.getApplicationId();
// Setup resource requirements
Resource capability = recordFactory.newRecordInstance(Resource.class);
capability.setMemory(
conf.getInt(
MRJobConfig.MR_AM_VMEM_MB, MRJobConfig.DEFAULT_MR_AM_VMEM_MB
)
);
capability.setVirtualCores(
conf.getInt(
MRJobConfig.MR_AM_CPU_VCORES, MRJobConfig.DEFAULT_MR_AM_CPU_VCORES
)
);
LOG.debug("AppMaster capability = " + capability);
// Setup LocalResources
Map<String, LocalResource> localResources =
new HashMap<String, LocalResource>();
Path jobConfPath = new Path(jobSubmitDir, MRJobConfig.JOB_CONF_FILE);
URL yarnUrlForJobSubmitDir = ConverterUtils
.getYarnUrlFromPath(defaultFileContext.getDefaultFileSystem()
.resolvePath(
defaultFileContext.makeQualified(new Path(jobSubmitDir))));
LOG.debug("Creating setup context, jobSubmitDir url is "
+ yarnUrlForJobSubmitDir);
localResources.put(MRJobConfig.JOB_CONF_FILE,
createApplicationResource(defaultFileContext,
jobConfPath, LocalResourceType.FILE));
if (jobConf.get(MRJobConfig.JAR) != null) {
Path jobJarPath = new Path(jobConf.get(MRJobConfig.JAR));
LocalResource rc = createApplicationResource(
FileContext.getFileContext(jobJarPath.toUri(), jobConf),
jobJarPath,
LocalResourceType.PATTERN);
String pattern = conf.getPattern(JobContext.JAR_UNPACK_PATTERN,
JobConf.UNPACK_JAR_PATTERN_DEFAULT).pattern();
rc.setPattern(pattern);
localResources.put(MRJobConfig.JOB_JAR, rc);
} else {
// Job jar may be null. For e.g, for pipes, the job jar is the hadoop
// mapreduce jar itself which is already on the classpath.
LOG.info("Job jar is not present. "
+ "Not adding any jar to the list of resources.");
}
// TODO gross hack
for (String s : new String[] {
MRJobConfig.JOB_SPLIT,
MRJobConfig.JOB_SPLIT_METAINFO }) {
localResources.put(
MRJobConfig.JOB_SUBMIT_DIR + "/" + s,
createApplicationResource(defaultFileContext,
new Path(jobSubmitDir, s), LocalResourceType.FILE));
}
// Setup security tokens
DataOutputBuffer dob = new DataOutputBuffer();
ts.writeTokenStorageToStream(dob);
ByteBuffer securityTokens = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
// Setup the command to run the AM
List<String> vargs = new ArrayList<String>(8);
vargs.add(MRApps.crossPlatformifyMREnv(jobConf, Environment.JAVA_HOME)
+ "/bin/java");
// TODO: why do we use 'conf' some places and 'jobConf' others?
long logSize = jobConf.getLong(MRJobConfig.MR_AM_LOG_KB,
MRJobConfig.DEFAULT_MR_AM_LOG_KB) << 10;
String logLevel = jobConf.get(
MRJobConfig.MR_AM_LOG_LEVEL, MRJobConfig.DEFAULT_MR_AM_LOG_LEVEL);
int numBackups = jobConf.getInt(MRJobConfig.MR_AM_LOG_BACKUPS,
MRJobConfig.DEFAULT_MR_AM_LOG_BACKUPS);
MRApps.addLog4jSystemProperties(logLevel, logSize, numBackups, vargs, conf);
// Check for Java Lib Path usage in MAP and REDUCE configs
warnForJavaLibPath(conf.get(MRJobConfig.MAP_JAVA_OPTS,""), "map",
MRJobConfig.MAP_JAVA_OPTS, MRJobConfig.MAP_ENV);
warnForJavaLibPath(conf.get(MRJobConfig.MAPRED_MAP_ADMIN_JAVA_OPTS,""), "map",
MRJobConfig.MAPRED_MAP_ADMIN_JAVA_OPTS, MRJobConfig.MAPRED_ADMIN_USER_ENV);
warnForJavaLibPath(conf.get(MRJobConfig.REDUCE_JAVA_OPTS,""), "reduce",
MRJobConfig.REDUCE_JAVA_OPTS, MRJobConfig.REDUCE_ENV);
warnForJavaLibPath(conf.get(MRJobConfig.MAPRED_REDUCE_ADMIN_JAVA_OPTS,""), "reduce",
MRJobConfig.MAPRED_REDUCE_ADMIN_JAVA_OPTS, MRJobConfig.MAPRED_ADMIN_USER_ENV);
// Add AM admin command opts before user command opts
// so that it can be overridden by user
String mrAppMasterAdminOptions = conf.get(MRJobConfig.MR_AM_ADMIN_COMMAND_OPTS,
MRJobConfig.DEFAULT_MR_AM_ADMIN_COMMAND_OPTS);
warnForJavaLibPath(mrAppMasterAdminOptions, "app master",
MRJobConfig.MR_AM_ADMIN_COMMAND_OPTS, MRJobConfig.MR_AM_ADMIN_USER_ENV);
vargs.add(mrAppMasterAdminOptions);
// Add AM user command opts
String mrAppMasterUserOptions = conf.get(MRJobConfig.MR_AM_COMMAND_OPTS,
MRJobConfig.DEFAULT_MR_AM_COMMAND_OPTS);
warnForJavaLibPath(mrAppMasterUserOptions, "app master",
MRJobConfig.MR_AM_COMMAND_OPTS, MRJobConfig.MR_AM_ENV);
vargs.add(mrAppMasterUserOptions);
if (jobConf.getBoolean(MRJobConfig.MR_AM_PROFILE,
MRJobConfig.DEFAULT_MR_AM_PROFILE)) {
final String profileParams = jobConf.get(MRJobConfig.MR_AM_PROFILE_PARAMS,
MRJobConfig.DEFAULT_TASK_PROFILE_PARAMS);
if (profileParams != null) {
vargs.add(String.format(profileParams,
ApplicationConstants.LOG_DIR_EXPANSION_VAR + Path.SEPARATOR
+ TaskLog.LogName.PROFILE));
}
}
vargs.add(MRJobConfig.APPLICATION_MASTER_CLASS);
vargs.add("1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR +
Path.SEPARATOR + ApplicationConstants.STDOUT);
vargs.add("2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR +
Path.SEPARATOR + ApplicationConstants.STDERR);
Vector<String> vargsFinal = new Vector<String>(8);
// Final command
StringBuilder mergedCommand = new StringBuilder();
for (CharSequence str : vargs) {
mergedCommand.append(str).append(" ");
}
vargsFinal.add(mergedCommand.toString());
LOG.debug("Command to launch container for ApplicationMaster is : "
+ mergedCommand);
// Setup the CLASSPATH in environment
// i.e. add { Hadoop jars, job jar, CWD } to classpath.
Map<String, String> environment = new HashMap<String, String>();
MRApps.setClasspath(environment, conf);
// Shell
environment.put(Environment.SHELL.name(),
conf.get(MRJobConfig.MAPRED_ADMIN_USER_SHELL,
MRJobConfig.DEFAULT_SHELL));
// Add the container working directory in front of LD_LIBRARY_PATH
MRApps.addToEnvironment(environment, Environment.LD_LIBRARY_PATH.name(),
MRApps.crossPlatformifyMREnv(conf, Environment.PWD), conf);
// Setup the environment variables for Admin first
MRApps.setEnvFromInputString(environment,
conf.get(MRJobConfig.MR_AM_ADMIN_USER_ENV,
MRJobConfig.DEFAULT_MR_AM_ADMIN_USER_ENV), conf);
// Setup the environment variables (LD_LIBRARY_PATH, etc)
MRApps.setEnvFromInputString(environment,
conf.get(MRJobConfig.MR_AM_ENV), conf);
// Parse distributed cache
MRApps.setupDistributedCache(jobConf, localResources);
Map<ApplicationAccessType, String> acls
= new HashMap<ApplicationAccessType, String>(2);
acls.put(ApplicationAccessType.VIEW_APP, jobConf.get(
MRJobConfig.JOB_ACL_VIEW_JOB, MRJobConfig.DEFAULT_JOB_ACL_VIEW_JOB));
acls.put(ApplicationAccessType.MODIFY_APP, jobConf.get(
MRJobConfig.JOB_ACL_MODIFY_JOB,
MRJobConfig.DEFAULT_JOB_ACL_MODIFY_JOB));
// Setup ContainerLaunchContext for AM container
ContainerLaunchContext amContainer =
ContainerLaunchContext.newInstance(localResources, environment,
vargsFinal, null, securityTokens, acls);
Collection<String> tagsFromConf =
jobConf.getTrimmedStringCollection(MRJobConfig.JOB_TAGS);
// Set up the ApplicationSubmissionContext
ApplicationSubmissionContext appContext =
recordFactory.newRecordInstance(ApplicationSubmissionContext.class);
appContext.setApplicationId(applicationId); // ApplicationId
appContext.setQueue( // Queue name
jobConf.get(JobContext.QUEUE_NAME,
YarnConfiguration.DEFAULT_QUEUE_NAME));
// add reservationID if present
ReservationId reservationID = null;
try {
reservationID =
ReservationId.parseReservationId(jobConf
.get(JobContext.RESERVATION_ID));
} catch (NumberFormatException e) {
// throw exception as reservationid as is invalid
String errMsg =
"Invalid reservationId: " + jobConf.get(JobContext.RESERVATION_ID)
+ " specified for the app: " + applicationId;
LOG.warn(errMsg);
throw new IOException(errMsg);
}
if (reservationID != null) {
appContext.setReservationID(reservationID);
LOG.info("SUBMITTING ApplicationSubmissionContext app:" + applicationId
+ " to queue:" + appContext.getQueue() + " with reservationId:"
+ appContext.getReservationID());
}
appContext.setApplicationName( // Job name
jobConf.get(JobContext.JOB_NAME,
YarnConfiguration.DEFAULT_APPLICATION_NAME));
appContext.setCancelTokensWhenComplete(
conf.getBoolean(MRJobConfig.JOB_CANCEL_DELEGATION_TOKEN, true));
appContext.setAMContainerSpec(amContainer); // AM Container
appContext.setMaxAppAttempts(
conf.getInt(MRJobConfig.MR_AM_MAX_ATTEMPTS,
MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS));
appContext.setResource(capability);
appContext.setApplicationType(MRJobConfig.MR_APPLICATION_TYPE);
if (tagsFromConf != null && !tagsFromConf.isEmpty()) {
appContext.setApplicationTags(new HashSet<String>(tagsFromConf));
}
return appContext;
}
@Override
public void setJobPriority(JobID arg0, String arg1) throws IOException,
InterruptedException {
resMgrDelegate.setJobPriority(arg0, arg1);
}
@Override
public long getProtocolVersion(String arg0, long arg1) throws IOException {
return resMgrDelegate.getProtocolVersion(arg0, arg1);
}
@Override
public long renewDelegationToken(Token<DelegationTokenIdentifier> arg0)
throws IOException, InterruptedException {
throw new UnsupportedOperationException("Use Token.renew instead");
}
@Override
public Counters getJobCounters(JobID arg0) throws IOException,
InterruptedException {
return clientCache.getClient(arg0).getJobCounters(arg0);
}
@Override
public String getJobHistoryDir() throws IOException, InterruptedException {
return JobHistoryUtils.getConfiguredHistoryServerDoneDirPrefix(conf);
}
@Override
public JobStatus getJobStatus(JobID jobID) throws IOException,
InterruptedException {
JobStatus status = clientCache.getClient(jobID).getJobStatus(jobID);
return status;
}
@Override
public TaskCompletionEvent[] getTaskCompletionEvents(JobID arg0, int arg1,
int arg2) throws IOException, InterruptedException {
return clientCache.getClient(arg0).getTaskCompletionEvents(arg0, arg1, arg2);
}
@Override
public String[] getTaskDiagnostics(TaskAttemptID arg0) throws IOException,
InterruptedException {
return clientCache.getClient(arg0.getJobID()).getTaskDiagnostics(arg0);
}
@Override
public TaskReport[] getTaskReports(JobID jobID, TaskType taskType)
throws IOException, InterruptedException {
return clientCache.getClient(jobID)
.getTaskReports(jobID, taskType);
}
private void killUnFinishedApplication(ApplicationId appId)
throws IOException {
ApplicationReport application = null;
try {
application = resMgrDelegate.getApplicationReport(appId);
} catch (YarnException e) {
throw new IOException(e);
}
if (application.getYarnApplicationState() == YarnApplicationState.FINISHED
|| application.getYarnApplicationState() == YarnApplicationState.FAILED
|| application.getYarnApplicationState() == YarnApplicationState.KILLED) {
return;
}
killApplication(appId);
}
private void killApplication(ApplicationId appId) throws IOException {
try {
resMgrDelegate.killApplication(appId);
} catch (YarnException e) {
throw new IOException(e);
}
}
private boolean isJobInTerminalState(JobStatus status) {
return status.getState() == JobStatus.State.KILLED
|| status.getState() == JobStatus.State.FAILED
|| status.getState() == JobStatus.State.SUCCEEDED;
}
@Override
public void killJob(JobID arg0) throws IOException, InterruptedException {
/* check if the status is not running, if not send kill to RM */
JobStatus status = clientCache.getClient(arg0).getJobStatus(arg0);
ApplicationId appId = TypeConverter.toYarn(arg0).getAppId();
// get status from RM and return
if (status == null) {
killUnFinishedApplication(appId);
return;
}
if (status.getState() != JobStatus.State.RUNNING) {
killApplication(appId);
return;
}
try {
/* send a kill to the AM */
clientCache.getClient(arg0).killJob(arg0);
long currentTimeMillis = System.currentTimeMillis();
long timeKillIssued = currentTimeMillis;
while ((currentTimeMillis < timeKillIssued + 10000L)
&& !isJobInTerminalState(status)) {
try {
Thread.sleep(1000L);
} catch (InterruptedException ie) {
/** interrupted, just break */
break;
}
currentTimeMillis = System.currentTimeMillis();
status = clientCache.getClient(arg0).getJobStatus(arg0);
if (status == null) {
killUnFinishedApplication(appId);
return;
}
}
} catch(IOException io) {
LOG.debug("Error when checking for application status", io);
}
if (status != null && !isJobInTerminalState(status)) {
killApplication(appId);
}
}
@Override
public boolean killTask(TaskAttemptID arg0, boolean arg1) throws IOException,
InterruptedException {
return clientCache.getClient(arg0.getJobID()).killTask(arg0, arg1);
}
@Override
public AccessControlList getQueueAdmins(String arg0) throws IOException {
return new AccessControlList("*");
}
@Override
public JobTrackerStatus getJobTrackerStatus() throws IOException,
InterruptedException {
return JobTrackerStatus.RUNNING;
}
@Override
public ProtocolSignature getProtocolSignature(String protocol,
long clientVersion, int clientMethodsHash) throws IOException {
return ProtocolSignature.getProtocolSignature(this, protocol, clientVersion,
clientMethodsHash);
}
@Override
public LogParams getLogFileParams(JobID jobID, TaskAttemptID taskAttemptID)
throws IOException {
return clientCache.getClient(jobID).getLogFilePath(jobID, taskAttemptID);
}
private static void warnForJavaLibPath(String opts, String component,
String javaConf, String envConf) {
if (opts != null && opts.contains("-Djava.library.path")) {
LOG.warn("Usage of -Djava.library.path in " + javaConf + " can cause " +
"programs to no longer function if hadoop native libraries " +
"are used. These values should be set as part of the " +
"LD_LIBRARY_PATH in the " + component + " JVM env using " +
envConf + " config settings.");
}
}
public void close() throws IOException {
if (resMgrDelegate != null) {
resMgrDelegate.close();
resMgrDelegate = null;
}
if (clientCache != null) {
clientCache.close();
clientCache = null;
}
}
}
我们只需要在项目建立相同的包名，然后相同的类名字，用下面的代码进行代理，就可以覆盖原先的代码，并且可以解决系统上的冲突。
/**
* 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.mapred;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Vector;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.ipc.ProtocolSignature;
import org.apache.hadoop.mapreduce.Cluster.JobTrackerStatus;
import org.apache.hadoop.mapreduce.ClusterMetrics;
import org.apache.hadoop.mapreduce.Counters;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.JobID;
import org.apache.hadoop.mapreduce.JobStatus;
import org.apache.hadoop.mapreduce.MRJobConfig;
import org.apache.hadoop.mapreduce.QueueAclsInfo;
import org.apache.hadoop.mapreduce.QueueInfo;
import org.apache.hadoop.mapreduce.TaskAttemptID;
import org.apache.hadoop.mapreduce.TaskCompletionEvent;
import org.apache.hadoop.mapreduce.TaskReport;
import org.apache.hadoop.mapreduce.TaskTrackerInfo;
import org.apache.hadoop.mapreduce.TaskType;
import org.apache.hadoop.mapreduce.TypeConverter;
import org.apache.hadoop.mapreduce.protocol.ClientProtocol;
import org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.mapreduce.v2.LogParams;
import org.apache.hadoop.mapreduce.v2.api.MRClientProtocol;
import org.apache.hadoop.mapreduce.v2.api.protocolrecords.GetDelegationTokenRequest;
import org.apache.hadoop.mapreduce.v2.jobhistory.JobHistoryUtils;
import org.apache.hadoop.mapreduce.v2.util.MRApps;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.authorize.AccessControlList;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.yarn.api.ApplicationConstants;
import org.apache.hadoop.yarn.api.ApplicationConstants.Environment;
import org.apache.hadoop.yarn.api.records.ApplicationAccessType;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
import org.apache.hadoop.yarn.api.records.LocalResource;
import org.apache.hadoop.yarn.api.records.LocalResourceType;
import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.URL;
import org.apache.hadoop.yarn.api.records.YarnApplicationState;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.factories.RecordFactory;
import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
import org.apache.hadoop.yarn.security.client.RMDelegationTokenSelector;
import org.apache.hadoop.yarn.util.ConverterUtils;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.CaseFormat;
/**
* This class enables the current JobClient (0.22 hadoop) to run on YARN.
*/
@SuppressWarnings("unchecked")
public class YARNRunner implements ClientProtocol {
private static final Log LOG = LogFactory.getLog(YARNRunner.class);
private final RecordFactory recordFactory = RecordFactoryProvider.getRecordFactory(null);
private ResourceMgrDelegate resMgrDelegate;
private ClientCache clientCache;
private Configuration conf;
private final FileContext defaultFileContext;
/**
* Yarn runner incapsulates the client interface of yarn
*
* @param conf
* the configuration object for the client
*/
public YARNRunner(Configuration conf) {
this(conf, new ResourceMgrDelegate(new YarnConfiguration(conf)));
}
/**
* Similar to {@link #YARNRunner(Configuration)} but allowing injecting
* {@link ResourceMgrDelegate}. Enables mocking and testing.
*
* @param conf
* the configuration object for the client
* @param resMgrDelegate
* the resourcemanager client handle.
*/
public YARNRunner(Configuration conf, ResourceMgrDelegate resMgrDelegate) {
this(conf, resMgrDelegate, new ClientCache(conf, resMgrDelegate));
}
/**
* Similar to
* {@link YARNRunner#YARNRunner(Configuration, ResourceMgrDelegate)} but
* allowing injecting {@link ClientCache}. Enable mocking and testing.
*
* @param conf
* the configuration object
* @param resMgrDelegate
* the resource manager delegate
* @param clientCache
* the client cache object.
*/
public YARNRunner(Configuration conf, ResourceMgrDelegate resMgrDelegate, ClientCache clientCache) {
this.conf = conf;
try {
this.resMgrDelegate = resMgrDelegate;
this.clientCache = clientCache;
this.defaultFileContext = FileContext.getFileContext(this.conf);
} catch (UnsupportedFileSystemException ufe) {
throw new RuntimeException("Error in instantiating YarnClient", ufe);
}
}
@Private
/**
* Used for testing mostly.
* @param resMgrDelegate the resource manager delegate to set to.
*/
public void setResourceMgrDelegate(ResourceMgrDelegate resMgrDelegate) {
this.resMgrDelegate = resMgrDelegate;
}
@Override
public void cancelDelegationToken(Token<DelegationTokenIdentifier> arg0) throws IOException, InterruptedException {
throw new UnsupportedOperationException("Use Token.renew instead");
}
@Override
public TaskTrackerInfo[] getActiveTrackers() throws IOException, InterruptedException {
return resMgrDelegate.getActiveTrackers();
}
@Override
public JobStatus[] getAllJobs() throws IOException, InterruptedException {
return resMgrDelegate.getAllJobs();
}
@Override
public TaskTrackerInfo[] getBlacklistedTrackers() throws IOException, InterruptedException {
return resMgrDelegate.getBlacklistedTrackers();
}
@Override
public ClusterMetrics getClusterMetrics() throws IOException, InterruptedException {
return resMgrDelegate.getClusterMetrics();
}
@VisibleForTesting
void addHistoryToken(Credentials ts) throws IOException, InterruptedException {
/* check if we have a hsproxy, if not, no need */
MRClientProtocol hsProxy = clientCache.getInitializedHSProxy();
if (UserGroupInformation.isSecurityEnabled() && (hsProxy != null)) {
/*
* note that get delegation token was called. Again this is hack for
* oozie to make sure we add history server delegation tokens to the
* credentials
*/
RMDelegationTokenSelector tokenSelector = new RMDelegationTokenSelector();
Text service = resMgrDelegate.getRMDelegationTokenService();
if (tokenSelector.selectToken(service, ts.getAllTokens()) != null) {
Text hsService = SecurityUtil.buildTokenService(hsProxy.getConnectAddress());
if (ts.getToken(hsService) == null) {
ts.addToken(hsService, getDelegationTokenFromHS(hsProxy));
}
}
}
}
@VisibleForTesting
Token<?> getDelegationTokenFromHS(MRClientProtocol hsProxy) throws IOException, InterruptedException {
GetDelegationTokenRequest request = recordFactory.newRecordInstance(GetDelegationTokenRequest.class);
request.setRenewer(Master.getMasterPrincipal(conf));
org.apache.hadoop.yarn.api.records.Token mrDelegationToken;
mrDelegationToken = hsProxy.getDelegationToken(request).getDelegationToken();
return ConverterUtils.convertFromYarn(mrDelegationToken, hsProxy.getConnectAddress());
}
@Override
public Token<DelegationTokenIdentifier> getDelegationToken(Text renewer) throws IOException, InterruptedException {
// The token is only used for serialization. So the type information
// mismatch should be fine.
return resMgrDelegate.getDelegationToken(renewer);
}
@Override
public String getFilesystemName() throws IOException, InterruptedException {
return resMgrDelegate.getFilesystemName();
}
@Override
public JobID getNewJobID() throws IOException, InterruptedException {
return resMgrDelegate.getNewJobID();
}
@Override
public QueueInfo getQueue(String queueName) throws IOException, InterruptedException {
return resMgrDelegate.getQueue(queueName);
}
@Override
public QueueAclsInfo[] getQueueAclsForCurrentUser() throws IOException, InterruptedException {
return resMgrDelegate.getQueueAclsForCurrentUser();
}
@Override
public QueueInfo[] getQueues() throws IOException, InterruptedException {
return resMgrDelegate.getQueues();
}
@Override
public QueueInfo[] getRootQueues() throws IOException, InterruptedException {
return resMgrDelegate.getRootQueues();
}
@Override
public QueueInfo[] getChildQueues(String parent) throws IOException, InterruptedException {
return resMgrDelegate.getChildQueues(parent);
}
@Override
public String getStagingAreaDir() throws IOException, InterruptedException {
return resMgrDelegate.getStagingAreaDir();
}
@Override
public String getSystemDir() throws IOException, InterruptedException {
return resMgrDelegate.getSystemDir();
}
@Override
public long getTaskTrackerExpiryInterval() throws IOException, InterruptedException {
return resMgrDelegate.getTaskTrackerExpiryInterval();
}
@Override
public JobStatus submitJob(JobID jobId, String jobSubmitDir, Credentials ts) throws IOException, InterruptedException {
addHistoryToken(ts);
// Construct necessary information to start the MR AM
ApplicationSubmissionContext appContext = createApplicationSubmissionContext(conf, jobSubmitDir, ts);
// Submit to ResourceManager
try {
ApplicationId applicationId = resMgrDelegate.submitApplication(appContext);
ApplicationReport appMaster = resMgrDelegate.getApplicationReport(applicationId);
String diagnostics = (appMaster == null ? "application report is null" : appMaster.getDiagnostics());
if (appMaster == null || appMaster.getYarnApplicationState() == YarnApplicationState.FAILED || appMaster.getYarnApplicationState() == YarnApplicationState.KILLED) {
throw new IOException("Failed to run job : " + diagnostics);
}
return clientCache.getClient(jobId).getJobStatus(jobId);
} catch (YarnException e) {
throw new IOException(e);
}
}
private LocalResource createApplicationResource(FileContext fs, Path p, LocalResourceType type) throws IOException {
LocalResource rsrc = recordFactory.newRecordInstance(LocalResource.class);
FileStatus rsrcStat = fs.getFileStatus(p);
rsrc.setResource(ConverterUtils.getYarnUrlFromPath(fs.getDefaultFileSystem().resolvePath(rsrcStat.getPath())));
rsrc.setSize(rsrcStat.getLen());
rsrc.setTimestamp(rsrcStat.getModificationTime());
rsrc.setType(type);
rsrc.setVisibility(LocalResourceVisibility.APPLICATION);
return rsrc;
}
public ApplicationSubmissionContext createApplicationSubmissionContext(Configuration jobConf, String jobSubmitDir, Credentials ts) throws IOException {
ApplicationId applicationId = resMgrDelegate.getApplicationId();
// Setup resource requirements
Resource capability = recordFactory.newRecordInstance(Resource.class);
capability.setMemory(conf.getInt(MRJobConfig.MR_AM_VMEM_MB, MRJobConfig.DEFAULT_MR_AM_VMEM_MB));
capability.setVirtualCores(conf.getInt(MRJobConfig.MR_AM_CPU_VCORES, MRJobConfig.DEFAULT_MR_AM_CPU_VCORES));
LOG.debug("AppMaster capability = " + capability);
// Setup LocalResources
Map<String, LocalResource> localResources = new HashMap<String, LocalResource>();
Path jobConfPath = new Path(jobSubmitDir, MRJobConfig.JOB_CONF_FILE);
URL yarnUrlForJobSubmitDir = ConverterUtils.getYarnUrlFromPath(defaultFileContext.getDefaultFileSystem().resolvePath(defaultFileContext.makeQualified(new Path(jobSubmitDir))));
LOG.debug("Creating setup context, jobSubmitDir url is " + yarnUrlForJobSubmitDir);
localResources.put(MRJobConfig.JOB_CONF_FILE, createApplicationResource(defaultFileContext, jobConfPath, LocalResourceType.FILE));
if (jobConf.get(MRJobConfig.JAR) != null) {
Path jobJarPath = new Path(jobConf.get(MRJobConfig.JAR));
LocalResource rc = createApplicationResource(FileContext.getFileContext(jobJarPath.toUri(), jobConf), jobJarPath, LocalResourceType.PATTERN);
String pattern = conf.getPattern(JobContext.JAR_UNPACK_PATTERN, JobConf.UNPACK_JAR_PATTERN_DEFAULT).pattern();
rc.setPattern(pattern);
localResources.put(MRJobConfig.JOB_JAR, rc);
} else {
// Job jar may be null. For e.g, for pipes, the job jar is the
// hadoop
// mapreduce jar itself which is already on the classpath.
LOG.info("Job jar is not present. " + "Not adding any jar to the list of resources.");
}
// TODO gross hack
for (String s : new String[] { MRJobConfig.JOB_SPLIT, MRJobConfig.JOB_SPLIT_METAINFO }) {
localResources.put(MRJobConfig.JOB_SUBMIT_DIR + "/" + s, createApplicationResource(defaultFileContext, new Path(jobSubmitDir, s), LocalResourceType.FILE));
}
// Setup security tokens
DataOutputBuffer dob = new DataOutputBuffer();
ts.writeTokenStorageToStream(dob);
ByteBuffer securityTokens = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
// Setup the command to run the AM
List<String> vargs = new ArrayList<String>(8);
// vargs.add(MRApps.crossPlatformifyMREnv(jobConf,
// Environment.JAVA_HOME)
// + "/bin/java");
// TODO ----angelababy的男朋友所改-------有任何问题，请联系angelababy
System.out.println(MRApps.crossPlatformifyMREnv(jobConf, Environment.JAVA_HOME) + "/bin/java");
System.out.println("$JAVA_HOME/bin/java");
vargs.add("$JAVA_HOME/bin/java");
// TODO: why do we use 'conf' some places and 'jobConf' others?
long logSize = jobConf.getLong(MRJobConfig.MR_AM_LOG_KB, MRJobConfig.DEFAULT_MR_AM_LOG_KB) << 10;
String logLevel = jobConf.get(MRJobConfig.MR_AM_LOG_LEVEL, MRJobConfig.DEFAULT_MR_AM_LOG_LEVEL);
int numBackups = jobConf.getInt(MRJobConfig.MR_AM_LOG_BACKUPS, MRJobConfig.DEFAULT_MR_AM_LOG_BACKUPS);
MRApps.addLog4jSystemProperties(logLevel, logSize, numBackups, vargs, conf);
// Check for Java Lib Path usage in MAP and REDUCE configs
warnForJavaLibPath(conf.get(MRJobConfig.MAP_JAVA_OPTS, ""), "map", MRJobConfig.MAP_JAVA_OPTS, MRJobConfig.MAP_ENV);
warnForJavaLibPath(conf.get(MRJobConfig.MAPRED_MAP_ADMIN_JAVA_OPTS, ""), "map", MRJobConfig.MAPRED_MAP_ADMIN_JAVA_OPTS, MRJobConfig.MAPRED_ADMIN_USER_ENV);
warnForJavaLibPath(conf.get(MRJobConfig.REDUCE_JAVA_OPTS, ""), "reduce", MRJobConfig.REDUCE_JAVA_OPTS, MRJobConfig.REDUCE_ENV);
warnForJavaLibPath(conf.get(MRJobConfig.MAPRED_REDUCE_ADMIN_JAVA_OPTS, ""), "reduce", MRJobConfig.MAPRED_REDUCE_ADMIN_JAVA_OPTS, MRJobConfig.MAPRED_ADMIN_USER_ENV);
// Add AM admin command opts before user command opts
// so that it can be overridden by user
String mrAppMasterAdminOptions = conf.get(MRJobConfig.MR_AM_ADMIN_COMMAND_OPTS, MRJobConfig.DEFAULT_MR_AM_ADMIN_COMMAND_OPTS);
warnForJavaLibPath(mrAppMasterAdminOptions, "app master", MRJobConfig.MR_AM_ADMIN_COMMAND_OPTS, MRJobConfig.MR_AM_ADMIN_USER_ENV);
vargs.add(mrAppMasterAdminOptions);
// Add AM user command opts
String mrAppMasterUserOptions = conf.get(MRJobConfig.MR_AM_COMMAND_OPTS, MRJobConfig.DEFAULT_MR_AM_COMMAND_OPTS);
warnForJavaLibPath(mrAppMasterUserOptions, "app master", MRJobConfig.MR_AM_COMMAND_OPTS, MRJobConfig.MR_AM_ENV);
vargs.add(mrAppMasterUserOptions);
if (jobConf.getBoolean(MRJobConfig.MR_AM_PROFILE, MRJobConfig.DEFAULT_MR_AM_PROFILE)) {
final String profileParams = jobConf.get(MRJobConfig.MR_AM_PROFILE_PARAMS, MRJobConfig.DEFAULT_TASK_PROFILE_PARAMS);
if (profileParams != null) {
vargs.add(String.format(profileParams, ApplicationConstants.LOG_DIR_EXPANSION_VAR + Path.SEPARATOR + TaskLog.LogName.PROFILE));
}
}
vargs.add(MRJobConfig.APPLICATION_MASTER_CLASS);
vargs.add("1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + Path.SEPARATOR + ApplicationConstants.STDOUT);
vargs.add("2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + Path.SEPARATOR + ApplicationConstants.STDERR);
Vector<String> vargsFinal = new Vector<String>(8);
// Final command
StringBuilder mergedCommand = new StringBuilder();
for (CharSequence str : vargs) {
mergedCommand.append(str).append(" ");
}
vargsFinal.add(mergedCommand.toString());
LOG.debug("Command to launch container for ApplicationMaster is : " + mergedCommand);
// Setup the CLASSPATH in environment
// i.e. add { Hadoop jars, job jar, CWD } to classpath.
Map<String, String> environment = new HashMap<String, String>();
MRApps.setClasspath(environment, conf);
// Shell
environment.put(Environment.SHELL.name(), conf.get(MRJobConfig.MAPRED_ADMIN_USER_SHELL, MRJobConfig.DEFAULT_SHELL));
// Add the container working directory at the front of LD_LIBRARY_PATH
MRApps.addToEnvironment(environment, Environment.LD_LIBRARY_PATH.name(), MRApps.crossPlatformifyMREnv(conf, Environment.PWD), conf);
// Setup the environment variables for Admin first
MRApps.setEnvFromInputString(environment, conf.get(MRJobConfig.MR_AM_ADMIN_USER_ENV), conf);
// Setup the environment variables (LD_LIBRARY_PATH, etc)
MRApps.setEnvFromInputString(environment, conf.get(MRJobConfig.MR_AM_ENV), conf);
// Parse distributed cache
MRApps.setupDistributedCache(jobConf, localResources);
Map<ApplicationAccessType, String> acls = new HashMap<ApplicationAccessType, String>(2);
acls.put(ApplicationAccessType.VIEW_APP, jobConf.get(MRJobConfig.JOB_ACL_VIEW_JOB, MRJobConfig.DEFAULT_JOB_ACL_VIEW_JOB));
acls.put(ApplicationAccessType.MODIFY_APP, jobConf.get(MRJobConfig.JOB_ACL_MODIFY_JOB, MRJobConfig.DEFAULT_JOB_ACL_MODIFY_JOB));
// TODO BY DHT
for (String key : environment.keySet()) {
String org = environment.get(key);
String linux = getLinux(org);
environment.put(key, linux);
}
// Setup ContainerLaunchContext for AM container
ContainerLaunchContext amContainer = ContainerLaunchContext.newInstance(localResources, environment, vargsFinal, null, securityTokens, acls);
Collection<String> tagsFromConf = jobConf.getTrimmedStringCollection(MRJobConfig.JOB_TAGS);
// Set up the ApplicationSubmissionContext
ApplicationSubmissionContext appContext = recordFactory.newRecordInstance(ApplicationSubmissionContext.class);
appContext.setApplicationId(applicationId); // ApplicationId
appContext.setQueue( // Queue name
jobConf.get(JobContext.QUEUE_NAME, YarnConfiguration.DEFAULT_QUEUE_NAME));
// add reservationID if present
ReservationId reservationID = null;
try {
reservationID = ReservationId.parseReservationId(jobConf.get(JobContext.RESERVATION_ID));
} catch (NumberFormatException e) {
// throw exception as reservationid as is invalid
String errMsg = "Invalid reservationId: " + jobConf.get(JobContext.RESERVATION_ID) + " specified for the app: " + applicationId;
LOG.warn(errMsg);
throw new IOException(errMsg);
}
if (reservationID != null) {
appContext.setReservationID(reservationID);
LOG.info("SUBMITTING ApplicationSubmissionContext app:" + applicationId + " to queue:" + appContext.getQueue() + " with reservationId:" + appContext.getReservationID());
}
appContext.setApplicationName( // Job name
jobConf.get(JobContext.JOB_NAME, YarnConfiguration.DEFAULT_APPLICATION_NAME));
appContext.setCancelTokensWhenComplete(conf.getBoolean(MRJobConfig.JOB_CANCEL_DELEGATION_TOKEN, true));
appContext.setAMContainerSpec(amContainer); // AM Container
appContext.setMaxAppAttempts(conf.getInt(MRJobConfig.MR_AM_MAX_ATTEMPTS, MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS));
appContext.setResource(capability);
appContext.setApplicationType(MRJobConfig.MR_APPLICATION_TYPE);
if (tagsFromConf != null && !tagsFromConf.isEmpty()) {
appContext.setApplicationTags(new HashSet<String>(tagsFromConf));
}
return appContext;
}
private String getLinux(String org) {
StringBuilder sb = new StringBuilder();
int c = 0;
for (int i = 0; i < org.length(); i++) {
if (org.charAt(i) == '%') {
c++;
if (c % 2 == 1) {
sb.append("$");
}
} else {
switch (org.charAt(i)) {
case ';':
sb.append(":");
break;
case '\\':
sb.append("/");
break;
default:
sb.append(org.charAt(i));
break;
}
}
}
return (sb.toString());
}
@Override
public void setJobPriority(JobID arg0, String arg1) throws IOException, InterruptedException {
resMgrDelegate.setJobPriority(arg0, arg1);
}
@Override
public long getProtocolVersion(String arg0, long arg1) throws IOException {
return resMgrDelegate.getProtocolVersion(arg0, arg1);
}
@Override
public long renewDelegationToken(Token<DelegationTokenIdentifier> arg0) throws IOException, InterruptedException {
throw new UnsupportedOperationException("Use Token.renew instead");
}
@Override
public Counters getJobCounters(JobID arg0) throws IOException, InterruptedException {
return clientCache.getClient(arg0).getJobCounters(arg0);
}
@Override
public String getJobHistoryDir() throws IOException, InterruptedException {
return JobHistoryUtils.getConfiguredHistoryServerDoneDirPrefix(conf);
}
@Override
public JobStatus getJobStatus(JobID jobID) throws IOException, InterruptedException {
JobStatus status = clientCache.getClient(jobID).getJobStatus(jobID);
return status;
}
@Override
public TaskCompletionEvent[] getTaskCompletionEvents(JobID arg0, int arg1, int arg2) throws IOException, InterruptedException {
return clientCache.getClient(arg0).getTaskCompletionEvents(arg0, arg1, arg2);
}
@Override
public String[] getTaskDiagnostics(TaskAttemptID arg0) throws IOException, InterruptedException {
return clientCache.getClient(arg0.getJobID()).getTaskDiagnostics(arg0);
}
@Override
public TaskReport[] getTaskReports(JobID jobID, TaskType taskType) throws IOException, InterruptedException {
return clientCache.getClient(jobID).getTaskReports(jobID, taskType);
}
private void killUnFinishedApplication(ApplicationId appId) throws IOException {
ApplicationReport application = null;
try {
application = resMgrDelegate.getApplicationReport(appId);
} catch (YarnException e) {
throw new IOException(e);
}
if (application.getYarnApplicationState() == YarnApplicationState.FINISHED || application.getYarnApplicationState() == YarnApplicationState.FAILED || application.getYarnApplicationState() == YarnApplicationState.KILLED) {
return;
}
killApplication(appId);
}
private void killApplication(ApplicationId appId) throws IOException {
try {
resMgrDelegate.killApplication(appId);
} catch (YarnException e) {
throw new IOException(e);
}
}
private boolean isJobInTerminalState(JobStatus status) {
return status.getState() == JobStatus.State.KILLED || status.getState() == JobStatus.State.FAILED || status.getState() == JobStatus.State.SUCCEEDED;
}
@Override
public void killJob(JobID arg0) throws IOException, InterruptedException {
/* check if the status is not running, if not send kill to RM */
JobStatus status = clientCache.getClient(arg0).getJobStatus(arg0);
ApplicationId appId = TypeConverter.toYarn(arg0).getAppId();
// get status from RM and return
if (status == null) {
killUnFinishedApplication(appId);
return;
}
if (status.getState() != JobStatus.State.RUNNING) {
killApplication(appId);
return;
}
try {
/* send a kill to the AM */
clientCache.getClient(arg0).killJob(arg0);
long currentTimeMillis = System.currentTimeMillis();
long timeKillIssued = currentTimeMillis;
while ((currentTimeMillis < timeKillIssued + 10000L) && !isJobInTerminalState(status)) {
try {
Thread.sleep(1000L);
} catch (InterruptedException ie) {
/** interrupted, just break */
break;
}
currentTimeMillis = System.currentTimeMillis();
status = clientCache.getClient(arg0).getJobStatus(arg0);
if (status == null) {
killUnFinishedApplication(appId);
return;
}
}
} catch (IOException io) {
LOG.debug("Error when checking for application status", io);
}
if (status != null && !isJobInTerminalState(status)) {
killApplication(appId);
}
}
@Override
public boolean killTask(TaskAttemptID arg0, boolean arg1) throws IOException, InterruptedException {
return clientCache.getClient(arg0.getJobID()).killTask(arg0, arg1);
}
@Override
public AccessControlList getQueueAdmins(String arg0) throws IOException {
return new AccessControlList("*");
}
@Override
public JobTrackerStatus getJobTrackerStatus() throws IOException, InterruptedException {
return JobTrackerStatus.RUNNING;
}
@Override
public ProtocolSignature getProtocolSignature(String protocol, long clientVersion, int clientMethodsHash) throws IOException {
return ProtocolSignature.getProtocolSignature(this, protocol, clientVersion, clientMethodsHash);
}
@Override
public LogParams getLogFileParams(JobID jobID, TaskAttemptID taskAttemptID) throws IOException {
return clientCache.getClient(jobID).getLogFilePath(jobID, taskAttemptID);
}
private static void warnForJavaLibPath(String opts, String component, String javaConf, String envConf) {
if (opts != null && opts.contains("-Djava.library.path")) {
LOG.warn("Usage of -Djava.library.path in " + javaConf + " can cause " + "programs to no longer function if hadoop native libraries " + "are used. These values should be set as part of the " + "LD_LIBRARY_PATH in the " + component + " JVM env using " + envConf
+ " config settings.");
}
}
}
然后就可以继续运行了。
在运行的时候，我们可以查看mapReduce运行的状态
http://bd1:8088/cluster
能够运行成功
