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.mapreduce.lib.input;
020    
021    import java.io.IOException;
022    
023    import org.apache.hadoop.classification.InterfaceAudience;
024    import org.apache.hadoop.classification.InterfaceStability;
025    import org.apache.hadoop.io.Text;
026    import org.apache.hadoop.mapreduce.InputSplit;
027    import org.apache.hadoop.mapreduce.RecordReader;
028    import 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
037    public 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    }