| /* |
| * 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.twill.internal.yarn; |
| |
| import com.google.common.base.Throwables; |
| import org.apache.hadoop.conf.Configuration; |
| |
| /** |
| * |
| */ |
| public final class VersionDetectYarnAMClientFactory implements YarnAMClientFactory { |
| |
| private final Configuration conf; |
| |
| public VersionDetectYarnAMClientFactory(Configuration conf) { |
| this.conf = conf; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public YarnAMClient create() { |
| try { |
| Class<YarnAMClient> clz; |
| String clzName; |
| switch (YarnUtils.getHadoopVersion()) { |
| case HADOOP_20: |
| // Uses hadoop-2.0 class |
| clzName = getClass().getPackage().getName() + ".Hadoop20YarnAMClient"; |
| clz = (Class<YarnAMClient>) Class.forName(clzName); |
| break; |
| case HADOOP_21: |
| // Uses hadoop-2.1 class |
| clzName = getClass().getPackage().getName() + ".Hadoop21YarnAMClient"; |
| clz = (Class<YarnAMClient>) Class.forName(clzName); |
| break; |
| case HADOOP_22: |
| case HADOOP_23: |
| // Uses hadoop-2.2 class |
| clzName = getClass().getPackage().getName() + ".Hadoop22YarnAMClient"; |
| clz = (Class<YarnAMClient>) Class.forName(clzName); |
| break; |
| default: |
| // Uses hadoop-2.6 or above class |
| clzName = getClass().getPackage().getName() + ".Hadoop26YarnAMClient"; |
| clz = (Class<YarnAMClient>) Class.forName(clzName); |
| break; |
| } |
| |
| return clz.getConstructor(Configuration.class).newInstance(conf); |
| |
| } catch (Exception e) { |
| throw Throwables.propagate(e); |
| } |
| } |
| } |