Java tutorial
/** * 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 yrun.commands; import java.io.IOException; import java.util.List; import org.apache.hadoop.yarn.api.records.ApplicationId; import org.apache.hadoop.yarn.api.records.ApplicationReport; import org.apache.hadoop.yarn.api.records.YarnApplicationState; import org.apache.hadoop.yarn.client.api.YarnClient; import org.apache.hadoop.yarn.conf.YarnConfiguration; import org.apache.hadoop.yarn.exceptions.YarnException; public class Yps { static { LogUtil.setupLog(); } public static void main(String[] args) throws YarnException, IOException { YarnClient yarnClient = YarnClient.createYarnClient(); YarnConfiguration yarnConfiguration = new YarnConfiguration(); yarnClient.init(yarnConfiguration); yarnClient.start(); try { List<ApplicationReport> applications = yarnClient.getApplications(); for (ApplicationReport applicationReport : applications) { ApplicationId applicationId = applicationReport.getApplicationId(); String user = applicationReport.getUser(); String queue = applicationReport.getQueue(); String name = applicationReport.getName(); YarnApplicationState yarnApplicationState = applicationReport.getYarnApplicationState(); float progress = applicationReport.getProgress(); System.out.printf("%s\t%s\t%s\t%s\t%s\t%f%n", toString(applicationId), user, queue, name, yarnApplicationState.name(), progress); } } finally { yarnClient.stop(); yarnClient.close(); } } private static String toString(ApplicationId applicationId) { return "application_" + applicationId.getClusterTimestamp() + "_" + applicationId.getId(); } }