| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.mapred; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| |
| import org.apache.hadoop.io.SequenceFile; |
| import org.apache.hadoop.io.MapFile; |
| |
| /** An {@link InputFormat} for {@link SequenceFile}s. |
| */ |
| public class SequenceFileInputFormat<K, V> extends FileInputFormat<K, V> { |
| |
| public SequenceFileInputFormat() { |
| setMinSplitSize(SequenceFile.SYNC_INTERVAL); |
| } |
| |
| @Override |
| protected FileStatus[] listStatus(JobConf job) throws IOException { |
| FileStatus[] files = super.listStatus(job); |
| for (int i = 0; i < files.length; i++) { |
| FileStatus file = files[i]; |
| if (file.isDir()) { // it's a MapFile |
| Path dataFile = new Path(file.getPath(), MapFile.DATA_FILE_NAME); |
| FileSystem fs = file.getPath().getFileSystem(job); |
| // use the data file |
| files[i] = fs.getFileStatus(dataFile); |
| } |
| } |
| return files; |
| } |
| |
| public RecordReader<K, V> getRecordReader(InputSplit split, |
| JobConf job, Reporter reporter) |
| throws IOException { |
| |
| reporter.setStatus(split.toString()); |
| |
| return new SequenceFileRecordReader<K, V>(job, (FileSplit) split); |
| } |
| |
| } |
| |