/*
* Copyright 2010-2013 10gen Inc.
*
* Licensed 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 com.mongodb.hadoop.mapred;
import com.mongodb.hadoop.mapred.output.BSONFileRecordWriter;
import com.mongodb.hadoop.splitter.BSONSplitter;
import com.mongodb.hadoop.util.MongoConfigUtil;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RecordWriter;
import org.apache.hadoop.util.Progressable;
import java.io.IOException;
public class BSONFileOutputFormat<K, V> extends FileOutputFormat<K, V> {
public RecordWriter<K, V> getRecordWriter(final FileSystem ignored, final JobConf job, final String name,
final Progressable progress) throws IOException {
Path outPath = getDefaultWorkFile(job, name, ".bson");
LOG.info("output going into " + outPath);
FileSystem fs = outPath.getFileSystem(job);
FSDataOutputStream outFile = fs.create(outPath);
FSDataOutputStream splitFile = null;
if (MongoConfigUtil.getBSONOutputBuildSplits(job)) {
Path splitPath = new Path(outPath.getParent(), "." + outPath.getName() + ".splits");
splitFile = fs.create(splitPath);
}
long splitSize = BSONSplitter.getSplitSize(job, null);
return new BSONFileRecordWriter<K, V>(outFile, splitFile, splitSize);
}
public static Path getDefaultWorkFile(final JobConf conf, final String name, final String extension) {
return new Path(getWorkOutputPath(conf), getUniqueName(conf, name) + extension);
}
private static final Log LOG = LogFactory.getLog(BSONFileOutputFormat.class);
}