| /** |
| * 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.tez.runtime.library.common; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.tez.common.TezJobConfig; |
| import org.apache.tez.dag.api.TezUncheckedException; |
| import org.apache.tez.runtime.api.TezOutputContext; |
| import org.apache.tez.runtime.api.TezTaskContext; |
| import org.apache.tez.runtime.library.api.Partitioner; |
| import org.apache.tez.runtime.library.common.combine.Combiner; |
| import org.apache.tez.runtime.library.common.task.local.output.TezTaskOutput; |
| import org.apache.tez.runtime.library.common.task.local.output.TezTaskOutputFiles; |
| |
| public class TezRuntimeUtils { |
| |
| private static final Log LOG = LogFactory |
| .getLog(TezRuntimeUtils.class); |
| |
| public static String getTaskIdentifier(String vertexName, int taskIndex) { |
| return String.format("%s_%06d", vertexName, taskIndex); |
| } |
| |
| public static String getTaskAttemptIdentifier(int taskIndex, |
| int taskAttemptNumber) { |
| return String.format("%d_%d", taskIndex, taskAttemptNumber); |
| } |
| |
| // TODO Maybe include a dag name in this. |
| public static String getTaskAttemptIdentifier(String vertexName, |
| int taskIndex, int taskAttemptNumber) { |
| return String.format("%s_%06d_%02d", vertexName, taskIndex, |
| taskAttemptNumber); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static Combiner instantiateCombiner(Configuration conf, TezTaskContext taskContext) throws IOException { |
| Class<? extends Combiner> clazz; |
| String className = conf.get(TezJobConfig.TEZ_RUNTIME_COMBINER_CLASS); |
| if (className == null) { |
| LOG.info("No combiner specified via " + TezJobConfig.TEZ_RUNTIME_COMBINER_CLASS + ". Combiner will not be used"); |
| return null; |
| } |
| LOG.info("Using Combiner class: " + className); |
| try { |
| clazz = (Class<? extends Combiner>) conf.getClassByName(className); |
| } catch (ClassNotFoundException e) { |
| throw new IOException("Unable to load combiner class: " + className); |
| } |
| |
| Combiner combiner = null; |
| |
| Constructor<? extends Combiner> ctor; |
| try { |
| ctor = clazz.getConstructor(TezTaskContext.class); |
| combiner = ctor.newInstance(taskContext); |
| } catch (SecurityException e) { |
| throw new IOException(e); |
| } catch (NoSuchMethodException e) { |
| throw new IOException(e); |
| } catch (IllegalArgumentException e) { |
| throw new IOException(e); |
| } catch (InstantiationException e) { |
| throw new IOException(e); |
| } catch (IllegalAccessException e) { |
| throw new IOException(e); |
| } catch (InvocationTargetException e) { |
| throw new IOException(e); |
| } |
| return combiner; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static Partitioner instantiatePartitioner(Configuration conf) |
| throws IOException { |
| Class<? extends Partitioner> clazz; |
| try { |
| clazz = (Class<? extends Partitioner>) conf |
| .getClassByName(conf.get(TezJobConfig.TEZ_RUNTIME_PARTITIONER_CLASS)); |
| } catch (ClassNotFoundException e) { |
| throw new IOException("Unable to find Partitioner class in config", e); |
| } |
| |
| LOG.info("Using partitioner class: " + clazz.getName()); |
| |
| Partitioner partitioner = null; |
| |
| try { |
| Constructor<? extends Partitioner> ctorWithConf = clazz |
| .getConstructor(Configuration.class); |
| partitioner = ctorWithConf.newInstance(conf); |
| } catch (SecurityException e) { |
| throw new IOException(e); |
| } catch (NoSuchMethodException e) { |
| try { |
| // Try a 0 argument constructor. |
| partitioner = clazz.newInstance(); |
| } catch (InstantiationException e1) { |
| throw new IOException(e1); |
| } catch (IllegalAccessException e1) { |
| throw new IOException(e1); |
| } |
| } catch (IllegalArgumentException e) { |
| throw new IOException(e); |
| } catch (InstantiationException e) { |
| throw new IOException(e); |
| } catch (IllegalAccessException e) { |
| throw new IOException(e); |
| } catch (InvocationTargetException e) { |
| throw new IOException(e); |
| } |
| return partitioner; |
| } |
| |
| public static TezTaskOutput instantiateTaskOutputManager(Configuration conf, TezOutputContext outputContext) { |
| Class<?> clazz = conf.getClass(Constants.TEZ_RUNTIME_TASK_OUTPUT_MANAGER, |
| TezTaskOutputFiles.class); |
| try { |
| Constructor<?> ctor = clazz.getConstructor(Configuration.class, String.class); |
| ctor.setAccessible(true); |
| TezTaskOutput instance = (TezTaskOutput) ctor.newInstance(conf, outputContext.getUniqueIdentifier()); |
| return instance; |
| } catch (Exception e) { |
| throw new TezUncheckedException( |
| "Unable to instantiate configured TezOutputFileManager: " |
| + conf.get(Constants.TEZ_RUNTIME_TASK_OUTPUT_MANAGER, |
| TezTaskOutputFiles.class.getName()), e); |
| } |
| } |
| } |