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 */ 018 019 package org.apache.hadoop.mapred; 020 021 import org.apache.hadoop.classification.InterfaceAudience; 022 import org.apache.hadoop.classification.InterfaceStability; 023 024 /** 025 * A general identifier, which internally stores the id 026 * as an integer. This is the super class of {@link JobID}, 027 * {@link TaskID} and {@link TaskAttemptID}. 028 * 029 * @see JobID 030 * @see TaskID 031 * @see TaskAttemptID 032 */ 033 @InterfaceAudience.Public 034 @InterfaceStability.Stable 035 public abstract class ID extends org.apache.hadoop.mapreduce.ID { 036 037 /** constructs an ID object from the given int */ 038 public ID(int id) { 039 super(id); 040 } 041 042 protected ID() { 043 } 044 045 }