Java tutorial
/** * Copyright (c) 2015 Intel Corporation * * Licensed 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.trustedanalytics.servicebroker.h2oprovisioner.cdhclients; import java.io.IOException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.security.UserGroupInformation; import org.apache.hadoop.yarn.client.api.YarnClient; import org.trustedanalytics.hadoop.config.client.helper.DelegatingYarnClient; import org.trustedanalytics.hadoop.config.client.helper.UgiWrapper; public class DeprovisionerYarnClientProvider { public DeprovisionerYarnClient getClient(String user, Configuration hadoopConf) throws IOException { String ticketCachePath = hadoopConf.get("hadoop.security.kerberos.ticket.cache.path"); UserGroupInformation ugi = UserGroupInformation.getBestUGI(ticketCachePath, user); UserGroupInformation.setLoginUser(ugi); YarnClient client = new DelegatingYarnClient(YarnClient.createYarnClient(), new UgiWrapper(ugi)); client.init(hadoopConf); return new DeprovisionerYarnClient(client); } }