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.FileStatus; 026 import org.apache.hadoop.fs.FileSystem; 027 import org.apache.hadoop.fs.Path; 028 029 import org.apache.hadoop.io.SequenceFile; 030 import org.apache.hadoop.io.MapFile; 031 032 /** An {@link InputFormat} for {@link SequenceFile}s. 033 * @deprecated Use 034 * {@link org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat} 035 * instead. 036 */ 037 @Deprecated 038 @InterfaceAudience.Public 039 @InterfaceStability.Stable 040 public class SequenceFileInputFormat<K, V> extends FileInputFormat<K, V> { 041 042 public SequenceFileInputFormat() { 043 setMinSplitSize(SequenceFile.SYNC_INTERVAL); 044 } 045 046 @Override 047 protected FileStatus[] listStatus(JobConf job) throws IOException { 048 FileStatus[] files = super.listStatus(job); 049 for (int i = 0; i < files.length; i++) { 050 FileStatus file = files[i]; 051 if (file.isDirectory()) { // it's a MapFile 052 Path dataFile = new Path(file.getPath(), MapFile.DATA_FILE_NAME); 053 FileSystem fs = file.getPath().getFileSystem(job); 054 // use the data file 055 files[i] = fs.getFileStatus(dataFile); 056 } 057 } 058 return files; 059 } 060 061 public RecordReader<K, V> getRecordReader(InputSplit split, 062 JobConf job, Reporter reporter) 063 throws IOException { 064 065 reporter.setStatus(split.toString()); 066 067 return new SequenceFileRecordReader<K, V>(job, (FileSplit) split); 068 } 069 070 } 071