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.mapreduce.lib.input;
020
021import java.io.IOException;
022
023import org.apache.hadoop.classification.InterfaceAudience;
024import org.apache.hadoop.classification.InterfaceStability;
025import org.apache.hadoop.io.Text;
026import org.apache.hadoop.mapreduce.InputSplit;
027import org.apache.hadoop.mapreduce.RecordReader;
028import org.apache.hadoop.mapreduce.TaskAttemptContext;
029
030/**
031 * This class is similar to SequenceFileInputFormat, except it generates
032 * SequenceFileAsTextRecordReader which converts the input keys and values
033 * to their String forms by calling toString() method. 
034 */
035@InterfaceAudience.Public
036@InterfaceStability.Stable
037public class SequenceFileAsTextInputFormat
038  extends SequenceFileInputFormat<Text, Text> {
039
040  public SequenceFileAsTextInputFormat() {
041    super();
042  }
043
044  public RecordReader<Text, Text> createRecordReader(InputSplit split,
045      TaskAttemptContext context) throws IOException {
046    context.setStatus(split.toString());
047    return new SequenceFileAsTextRecordReader();
048  }
049}