| /** |
| * 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.IOException; |
| import java.util.EnumSet; |
| import java.util.Set; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| 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.ApplicationSubmissionContext; |
| import org.apache.hadoop.yarn.api.records.ContainerLaunchContext; |
| import org.apache.hadoop.yarn.api.records.FinalApplicationStatus; |
| import org.apache.hadoop.yarn.api.records.Priority; |
| import org.apache.hadoop.yarn.api.records.YarnApplicationState; |
| import org.apache.hadoop.yarn.client.api.YarnClientApplication; |
| import org.apache.hadoop.yarn.client.api.impl.YarnClientImpl; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.util.Records; |
| |
| /** |
| * Base class for a simple client that runs the AM logic inline. The AM is not |
| * launched and managed by the RM. The client creates a new application on the |
| * RM and negotiates a new attempt id. Then it waits for the RM app state to |
| * reach be YarnApplicationState.ACCEPTED after which it runs the AM logic. |
| */ |
| public abstract class InlineAM |
| { |
| private static final Log LOG = LogFactory.getLog(InlineAM.class); |
| |
| // Handle to talk to the Resource Manager/Applications Manager |
| private final YarnClientImpl rmClient; |
| |
| // Application master specific info to register a new Application with RM/ASM |
| private String appName = ""; |
| // App master priority |
| private int amPriority = 0; |
| // Queue for App master |
| private String amQueue = ""; |
| |
| /** |
| */ |
| public InlineAM(Configuration conf) throws Exception |
| { |
| |
| appName = "UnmanagedAM"; |
| amPriority = 0; |
| amQueue = "default"; |
| |
| YarnConfiguration yarnConf = new YarnConfiguration(conf); |
| rmClient = new YarnClientImpl(); |
| rmClient.init(yarnConf); |
| } |
| |
| public abstract void runAM(ApplicationAttemptId attemptId) throws Exception; |
| |
| public boolean run() throws Exception |
| { |
| LOG.info("Starting Client"); |
| |
| // Connect to ResourceManager |
| rmClient.start(); |
| try { |
| // Get a new application id |
| YarnClientApplication newApp = rmClient.createApplication(); |
| ApplicationId appId = newApp.getNewApplicationResponse().getApplicationId(); |
| |
| // Create launch context for app master |
| LOG.info("Setting up application submission context for ASM"); |
| ApplicationSubmissionContext appContext = Records |
| .newRecord(ApplicationSubmissionContext.class); |
| |
| // set the application id |
| appContext.setApplicationId(appId); |
| // set the application name |
| appContext.setApplicationName(appName); |
| |
| // Set the priority for the application master |
| Priority pri = Records.newRecord(Priority.class); |
| pri.setPriority(amPriority); |
| appContext.setPriority(pri); |
| |
| // Set the queue to which this application is to be submitted in the RM |
| appContext.setQueue(amQueue); |
| |
| // Set up the container launch context for the application master |
| ContainerLaunchContext amContainer = Records |
| .newRecord(ContainerLaunchContext.class); |
| appContext.setAMContainerSpec(amContainer); |
| |
| // unmanaged AM |
| appContext.setUnmanagedAM(true); |
| LOG.info("Setting unmanaged AM"); |
| |
| // Submit the application to the applications manager |
| LOG.info("Submitting application to ASM"); |
| rmClient.submitApplication(appContext); |
| |
| // Monitor the application to wait for launch state |
| ApplicationReport appReport = monitorApplication(appId, |
| EnumSet.of(YarnApplicationState.ACCEPTED)); |
| ApplicationAttemptId attemptId = appReport.getCurrentApplicationAttemptId(); |
| LOG.info("Launching application with id: " + attemptId); |
| |
| // launch AM |
| runAM(attemptId); |
| |
| // Monitor the application for end state |
| appReport = monitorApplication(appId, EnumSet.of( |
| YarnApplicationState.KILLED, YarnApplicationState.FAILED, |
| YarnApplicationState.FINISHED)); |
| YarnApplicationState appState = appReport.getYarnApplicationState(); |
| FinalApplicationStatus appStatus = appReport.getFinalApplicationStatus(); |
| |
| LOG.info("App ended with state: " + appReport.getYarnApplicationState() |
| + " and status: " + appStatus); |
| |
| boolean success; |
| if (YarnApplicationState.FINISHED == appState |
| && FinalApplicationStatus.SUCCEEDED == appStatus) { |
| LOG.info("Application has completed successfully."); |
| success = true; |
| } else { |
| LOG.info("Application did finished unsuccessfully." + " YarnState=" |
| + appState.toString() + ", FinalStatus=" + appStatus.toString()); |
| success = false; |
| } |
| |
| return success; |
| } finally { |
| rmClient.stop(); |
| } |
| } |
| |
| /** |
| * Monitor the submitted application for completion. Kill application if time |
| * expires. |
| * |
| * @param appId |
| * Application Id of application to be monitored |
| * @return true if application completed successfully |
| * @throws YarnRemoteException |
| */ |
| private ApplicationReport monitorApplication(ApplicationId appId, |
| Set<YarnApplicationState> finalState) throws YarnException, IOException |
| { |
| |
| while (true) { |
| |
| // Check app status every 1 second. |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException e) { |
| LOG.debug("Thread sleep in monitoring loop interrupted"); |
| } |
| |
| // Get application report for the appId we are interested in |
| ApplicationReport report = rmClient.getApplicationReport(appId); |
| |
| LOG.info("Got application report from ASM for" + ", appId=" |
| + appId.getId() + ", appAttemptId=" |
| + report.getCurrentApplicationAttemptId() + ", clientToken=" |
| + report.getClientToAMToken() + ", appDiagnostics=" |
| + report.getDiagnostics() + ", appMasterHost=" + report.getHost() |
| + ", appQueue=" + report.getQueue() + ", appMasterRpcPort=" |
| + report.getRpcPort() + ", appStartTime=" + report.getStartTime() |
| + ", yarnAppState=" + report.getYarnApplicationState().toString() |
| + ", distributedFinalState=" |
| + report.getFinalApplicationStatus().toString() + ", appTrackingUrl=" |
| + report.getTrackingUrl() + ", appUser=" + report.getUser()); |
| |
| YarnApplicationState state = report.getYarnApplicationState(); |
| if (finalState.contains(state)) { |
| return report; |
| } |
| |
| } |
| |
| } |
| |
| } |