001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.hadoop.mapred; 020 021import java.io.IOException; 022 023import org.apache.hadoop.classification.InterfaceAudience.Public; 024import org.apache.hadoop.classification.InterfaceStability.Evolving; 025 026@Public 027@Evolving 028public interface InputSplitWithLocationInfo extends InputSplit { 029 /** 030 * Gets info about which nodes the input split is stored on and how it is 031 * stored at each location. 032 * 033 * @return list of <code>SplitLocationInfo</code>s describing how the split 034 * data is stored at each location. A null value indicates that all the 035 * locations have the data stored on disk. 036 * @throws IOException 037 */ 038 SplitLocationInfo[] getLocationInfo() throws IOException; 039}