| /** |
| * 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.oozie.action.hadoop; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapreduce.MRJobConfig; |
| import org.apache.oozie.action.ActionExecutorException; |
| import org.apache.oozie.service.ConfigurationService; |
| import org.apache.oozie.util.StringUtils; |
| import org.apache.oozie.util.XLog; |
| import org.jdom.Element; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class DistcpActionExecutor extends JavaActionExecutor{ |
| public static final String CONF_OOZIE_DISTCP_ACTION_MAIN_CLASS = "org.apache.oozie.action.hadoop.DistcpMain"; |
| private static final String DISTCP_MAIN_CLASS_NAME = "org.apache.hadoop.tools.DistCp"; |
| public static final String CLASS_NAMES = "oozie.actions.main.classnames"; |
| private static final XLog LOG = XLog.getLog(DistcpActionExecutor.class); |
| public static final String DISTCP_TYPE = "distcp"; |
| |
| /** |
| * Comma separated list of NameNode hosts to obtain delegation token(s) for. |
| */ |
| private static final String OOZIE_LAUNCHER_MAPREDUCE_JOB_HDFS_SERVERS = "oozie.launcher.mapreduce.job.hdfs-servers"; |
| |
| /** |
| * Comma separated list to instruct ResourceManagers on either cluster to skip delegation token renewal for NameNode hosts. |
| */ |
| private static final String OOZIE_LAUNCHER_MAPREDUCE_JOB_HDFS_SERVERS_TOKEN_RENEWAL_EXCLUDE = |
| "oozie.launcher.mapreduce.job.hdfs-servers.token-renewal.exclude"; |
| private static final String JOB_NAMENODES_TOKEN_RENEWAL_EXCLUDE = "mapreduce.job.hdfs-servers.token-renewal.exclude"; |
| |
| |
| public DistcpActionExecutor() { |
| super("distcp"); |
| } |
| |
| @Override |
| Configuration setupActionConf(Configuration actionConf, Context context, Element actionXml, Path appPath) |
| throws ActionExecutorException { |
| actionConf = super.setupActionConf(actionConf, context, actionXml, appPath); |
| actionConf.set(JavaMain.JAVA_MAIN_CLASS, DISTCP_MAIN_CLASS_NAME); |
| return actionConf; |
| } |
| |
| @Override |
| public List<Class<?>> getLauncherClasses() { |
| List<Class<?>> classes = new ArrayList<>(); |
| try { |
| classes.add(Class.forName(CONF_OOZIE_DISTCP_ACTION_MAIN_CLASS)); |
| } |
| catch (ClassNotFoundException e) { |
| throw new RuntimeException("Class not found", e); |
| } |
| return classes; |
| } |
| |
| /** |
| * This function returns the Action classes names from the configuration |
| * |
| * @param type This is type of the action classes |
| * @return Name of the class from the configuration |
| */ |
| public static String getClassNamebyType(String type){ |
| String classname = null; |
| for (String function : ConfigurationService.getStrings(CLASS_NAMES)) { |
| function = StringUtils.trim(function); |
| LOG.debug("class for Distcp Action: " + function); |
| String[] str = function.split("="); |
| if (str.length > 0) { |
| if(type.equalsIgnoreCase(str[0])){ |
| classname = new String(str[1]); |
| } |
| } |
| } |
| return classname; |
| } |
| |
| /** |
| * Return the sharelib name for the action. |
| * |
| * @return returns <code>distcp</code>. |
| * @param actionXml action xml element |
| */ |
| @Override |
| protected String getDefaultShareLibName(Element actionXml) { |
| return "distcp"; |
| } |
| |
| @Override |
| protected String getLauncherMain(Configuration launcherConf, Element actionXml) { |
| return launcherConf.get(LauncherAMUtils.CONF_OOZIE_ACTION_MAIN_CLASS, CONF_OOZIE_DISTCP_ACTION_MAIN_CLASS); |
| } |
| |
| /** |
| * Extracts information required for DistCp action between secure clusters (in the same or distinct Kerberos realms) |
| * |
| * @param jobconf workflow action configuration |
| */ |
| @Override |
| protected void setActionTokenProperties(final Configuration jobconf) { |
| final String hdfsServers = jobconf.get(OOZIE_LAUNCHER_MAPREDUCE_JOB_HDFS_SERVERS); |
| if (hdfsServers != null) { |
| jobconf.set(MRJobConfig.JOB_NAMENODES, hdfsServers); |
| final String tokenRenewalExclude = jobconf.get(OOZIE_LAUNCHER_MAPREDUCE_JOB_HDFS_SERVERS_TOKEN_RENEWAL_EXCLUDE); |
| if (tokenRenewalExclude != null) { |
| jobconf.set(JOB_NAMENODES_TOKEN_RENEWAL_EXCLUDE, tokenRenewalExclude); |
| } |
| } |
| } |
| } |