SequenceFileInputFormat.java
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上传日期:2018-01-08
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- /**
- * 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.
- * @deprecated Use
- * {@link org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat}
- * instead.
- */
- @Deprecated
- 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);
- }
- }