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 org.apache.hadoop.classification.InterfaceAudience;
022import 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
035public 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}