我尝试制作纱线应用程序主机并在hadoop 2上运行应用程序。这些是源
=== Client.java
public class MyClient {
Configuration conf = new YarnConfiguration();
public void run(String[] args) throws Exception {
final int n = 1;
final Path jarPath = new Path("./");
YarnConfiguration conf = new YarnConfiguration();
YarnClient yarnClient = YarnClient.createYarnClient();
yarnClient.init(conf);
yarnClient.start();
YarnClientApplication app = yarnClient.createApplication();
ContainerLaunchContext amContainer = Records.newRecord(ContainerLaunchContext.class);
amContainer.setCommands(
Collections.singletonList(
"$JAVA_HOME/bin/java" + " -Xmx256M" + " com.aaa.yarn.MyApplicationMaster" + " " + jarPath +
" " + String.valueOf(n) +
" 1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stdout" +
" 2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stderr"
)
);
LocalResource appMasterJar = Records.newRecord(LocalResource.class);
setupAppMasterJar(jarPath, appMasterJar);
amContainer.setLocalResources(Collections.singletonMap("YarnHelloWorld.jar", appMasterJar));
Map<String, String> appMasterEnv = new HashMap<String, String>();
setupAppMasterEnv(appMasterEnv);
amContainer.setEnvironment(appMasterEnv);
Resource capability = Records.newRecord(Resource.class);
capability.setMemory(256);
capability.setVirtualCores(1);
ApplicationSubmissionContext appContext = app.getApplicationSubmissionContext();
appContext.setApplicationName("Yarn_Hello_World"); // application name
appContext.setAMContainerSpec(amContainer);
appContext.setResource(capability);
appContext.setQueue("default"); // queue
ApplicationId appId = appContext.getApplicationId();
System.out.println("Submitting application " + appId);
yarnClient.submitApplication(appContext);
ApplicationReport appReport = yarnClient.getApplicationReport(appId);
YarnApplicationState appState = appReport.getYarnApplicationState();
while (appState != YarnApplicationState.FINISHED && appState != YarnApplicationState.KILLED &&
appState != YarnApplicationState.FAILED) {
Thread.sleep(100);
appReport = yarnClient.getApplicationReport(appId);
appState = appReport.getYarnApplicationState();
}
System.out.println("Application " + appId + " finished with" + " state " + appState + " at " + appReport.getFinishTime());
}
private void setupAppMasterJar(Path jarPath, LocalResource appMasterJar) throws IOException {
FileStatus jarStat = FileSystem.get(conf).getFileStatus(jarPath);
appMasterJar.setResource(ConverterUtils.getYarnUrlFromPath(jarPath));
appMasterJar.setSize(jarStat.getLen());
appMasterJar.setTimestamp(jarStat.getModificationTime());
appMasterJar.setType(LocalResourceType.FILE);
appMasterJar.setVisibility(LocalResourceVisibility.PUBLIC);
}
private void setupAppMasterEnv(Map<String, String> appMasterEnv) {
StringBuilder classPathEnv = new StringBuilder(Environment.CLASSPATH.$$())
.append(ApplicationConstants.CLASS_PATH_SEPARATOR).append("./*");
for (String c : conf.getStrings(YarnConfiguration.YARN_APPLICATION_CLASSPATH,
YarnConfiguration.DEFAULT_YARN_CROSS_PLATFORM_APPLICATION_CLASSPATH)) {
classPathEnv.append(ApplicationConstants.CLASS_PATH_SEPARATOR);
classPathEnv.append(c.trim());
}
appMasterEnv.put("CLASSPATH", classPathEnv.toString());
}
public static void main(String[] args) throws Exception{
// TODO Auto-generated method stub
MyClient c = new MyClient();
c.run(args);
}
}
===我的申请大师
public class MyApplicationMaster {
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
final int n = 1;
Configuration conf = new YarnConfiguration();
AMRMClient<ContainerRequest> rmClient = AMRMClient.createAMRMClient();
rmClient.init(conf);
rmClient.start();
NMClient nmClient = NMClient.createNMClient();
nmClient.init(conf);
nmClient.start();
System.out.println("registerApplicationMaster 0");
rmClient.registerApplicationMaster("", 0, "");
System.out.println("registerApplicationMaster 1");
Priority priority = Records.newRecord(Priority.class);
priority.setPriority(0);
Resource capability = Records.newRecord(Resource.class);
capability.setMemory(128);
capability.setVirtualCores(1);
for (int i = 0; i < n; ++i) {
ContainerRequest containerAsk = new ContainerRequest(capability, null, null, priority);
System.out.println("Making res-req " + i);
rmClient.addContainerRequest(containerAsk);
}
int responseId = 0;
int completedContainers = 0;
while (completedContainers < n) {
AllocateResponse response = rmClient.allocate(responseId++);
for (Container container : response.getAllocatedContainers()) {
ContainerLaunchContext ctx = Records.newRecord(ContainerLaunchContext.class);
ctx.setCommands(
Collections.singletonList(
"$JAVA_HOME/bin/java" + " -Xmx256M" + " com.aaa.yarn.YarnHelloWorld" +
" 1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stdout" +
" 2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stderr"
));
System.out.println("Launching container " + container.getId());
nmClient.startContainer(container, ctx);
}
for (ContainerStatus status : response.getCompletedContainersStatuses()) {
++completedContainers;
System.out.println("Completed container " + status.getContainerId());
}
Thread.sleep(100);
}
rmClient.unregisterApplicationMaster(
FinalApplicationStatus.SUCCEEDED, "", "");
}
}
但部署失败。在nodemanager日志中，抛出以下异常
WARN org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container: Failed to parse resource-request
java.net.URISyntaxException: Expected scheme name at index 0: ://
at java.net.URI$Parser.fail(URI.java:2848)
at java.net.URI$Parser.failExpecting(URI.java:2854)
at java.net.URI$Parser.parse(URI.java:3046)
at java.net.URI.<init>(URI.java:746)
at org.apache.hadoop.yarn.util.ConverterUtils.getPathFromYarnURL(ConverterUtils.java:80)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalResourceRequest.<init>(LocalResourceRequest.java:46)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$RequestResourcesTransition.transition(ContainerImpl.java:632)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl$RequestResourcesTransition.transition(ContainerImpl.java:590)
at org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:385)
at org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
at org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:46)
at org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:448)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl.handle(ContainerImpl.java:992)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerImpl.handle(ContainerImpl.java:76)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl$ContainerEventDispatcher.handle(ContainerManagerImpl.java:1065)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl$ContainerEventDispatcher.handle(ContainerManagerImpl.java:1058)
at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:173)
at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:106)
at java.lang.Thread.run(Thread.java:745)
我认为这一行存在一些问题
amContainer.setCommands(
Collections.singletonList(
"Environment.JAVA_HOME.$$()" + "/bin/java" + " -Xmx256M" + " com.aaa.yarn.MyApplicationMaster" + " " + jarPath +
" " + String.valueOf(n) +
" 1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stdout" +
" 2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stderr"
)
);
但我不知道。