fm.last.feathers.output.MultipleRawFileOutputFormat.java Source code

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Here is the source code for fm.last.feathers.output.MultipleRawFileOutputFormat.java

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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 fm.last.feathers.output;

import java.io.IOException;
import java.util.ArrayList;

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RecordWriter;
import org.apache.hadoop.mapred.lib.MultipleOutputFormat;
import org.apache.hadoop.util.Progressable;

import fm.last.feathers.output.RawFileOutputFormat;

/**
 * This class extends the MultipleOutputFormat, allowing to write the output data-
 * to different output files in raw file output format.
 */
public class MultipleRawFileOutputFormat<K, V> extends MultipleOutputFormat<K, V> {

    private RawFileOutputFormat<K, V> theRawFileOutputFormat = null;

    @Override
    protected RecordWriter<K, V> getBaseRecordWriter(FileSystem fs, JobConf job, String name, Progressable arg3)
            throws IOException {
        if (this.theRawFileOutputFormat == null)
            this.theRawFileOutputFormat = new RawFileOutputFormat<K, V>();
        return this.theRawFileOutputFormat.getRecordWriter(fs, job, name, arg3);
    }

    @Override
    protected String generateFileNameForKeyValue(K key, V value, String name) {
        return new Path(key.toString(), name).toString();
    }

    @Override
    protected String getInputFileBasedOutputFileName(JobConf job, String name) {
        if (job.getBoolean("feathers.output.filename.strippart", false))
            name = new Path(name).getParent().toString();
        return super.getInputFileBasedOutputFileName(job, name);
    }
}