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 java.io.IOException; 022 023 import org.apache.hadoop.classification.InterfaceAudience; 024 import org.apache.hadoop.classification.InterfaceStability; 025 import org.apache.hadoop.fs.FileSystem; 026 import org.apache.hadoop.fs.Path; 027 import org.apache.hadoop.io.Text; 028 import org.apache.hadoop.io.compress.CompressionCodec; 029 import org.apache.hadoop.io.compress.CompressionCodecFactory; 030 import org.apache.hadoop.io.compress.SplittableCompressionCodec; 031 032 /** 033 * An {@link InputFormat} for plain text files. Files are broken into lines. 034 * Either linefeed or carriage-return are used to signal end of line. Each line 035 * is divided into key and value parts by a separator byte. If no such a byte 036 * exists, the key will be the entire line and value will be empty. 037 * 038 * @deprecated Use 039 * {@link org.apache.hadoop.mapreduce.lib.input.KeyValueTextInputFormat} 040 * instead 041 */ 042 @Deprecated 043 @InterfaceAudience.Public 044 @InterfaceStability.Stable 045 public class KeyValueTextInputFormat extends FileInputFormat<Text, Text> 046 implements JobConfigurable { 047 048 private CompressionCodecFactory compressionCodecs = null; 049 050 public void configure(JobConf conf) { 051 compressionCodecs = new CompressionCodecFactory(conf); 052 } 053 054 protected boolean isSplitable(FileSystem fs, Path file) { 055 final CompressionCodec codec = compressionCodecs.getCodec(file); 056 if (null == codec) { 057 return true; 058 } 059 return codec instanceof SplittableCompressionCodec; 060 } 061 062 public RecordReader<Text, Text> getRecordReader(InputSplit genericSplit, 063 JobConf job, 064 Reporter reporter) 065 throws IOException { 066 067 reporter.setStatus(genericSplit.toString()); 068 return new KeyValueLineRecordReader(job, (FileSplit) genericSplit); 069 } 070 071 }