| /** |
| * 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.output; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.tez.common.TezUtils; |
| import org.apache.tez.runtime.api.Event; |
| import org.apache.tez.runtime.api.LogicalOutput; |
| import org.apache.tez.runtime.api.Output; |
| import org.apache.tez.runtime.api.TezOutputContext; |
| import org.apache.tez.runtime.api.Writer; |
| import org.apache.tez.runtime.library.api.KVWriter; |
| import org.apache.tez.runtime.library.common.sort.impl.dflt.InMemoryShuffleSorter; |
| |
| /** |
| * {@link InMemorySortedOutput} is an {@link Output} which sorts key/value pairs |
| * written to it and persists it to a file. |
| */ |
| public class InMemorySortedOutput implements LogicalOutput { |
| |
| protected InMemoryShuffleSorter sorter; |
| protected int numTasks; |
| protected TezOutputContext outputContext; |
| |
| |
| @Override |
| public List<Event> initialize(TezOutputContext outputContext) |
| throws IOException { |
| this.outputContext = outputContext; |
| this.sorter = new InMemoryShuffleSorter(); |
| sorter.initialize(outputContext, TezUtils.createConfFromUserPayload(outputContext.getUserPayload()), numTasks); |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public Writer getWriter() throws IOException { |
| return new KVWriter() { |
| |
| @Override |
| public void write(Object key, Object value) throws IOException { |
| sorter.write(key, value); |
| } |
| }; |
| } |
| |
| @Override |
| public void handleEvents(List<Event> outputEvents) { |
| // No events expected. |
| } |
| |
| @Override |
| public void setNumPhysicalOutputs(int numOutputs) { |
| this.numTasks = numOutputs; |
| } |
| |
| @Override |
| public List<Event> close() throws IOException { |
| sorter.flush(); |
| sorter.close(); |
| // TODO NEWTEZ Event generation |
| return null; |
| } |
| } |