com.ibm.bi.dml.runtime.matrix.data.UnPaddedOutputFormat.java Source code

Introduction

Here is the source code for com.ibm.bi.dml.runtime.matrix.data.UnPaddedOutputFormat.java

Source

/**
 * (C) Copyright IBM Corp. 2010, 2015
 *
 * 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.ibm.bi.dml.runtime.matrix.data;

import java.io.IOException;

import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RecordWriter;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.util.Progressable;

public class UnPaddedOutputFormat<K extends Writable, V extends Writable> extends FileOutputFormat<K, V> {

    public static class UnpaddedRecordWriter<K extends Writable, V extends Writable> implements RecordWriter<K, V> {
        /** file input stream */
        private FSDataOutputStream out;

        public UnpaddedRecordWriter(FSDataOutputStream fstream) {
            out = fstream;
        }

        @Override
        public void close(Reporter report) throws IOException {
            out.close();

        }

        @Override
        public void write(K key, V value) throws IOException {
            key.write(out);
            value.write(out);
        }
    }

    @Override
    public RecordWriter<K, V> getRecordWriter(FileSystem ignored, JobConf job, String name, Progressable progress)
            throws IOException {
        Path file = FileOutputFormat.getTaskOutputPath(job, name);
        FileSystem fs = file.getFileSystem(job);
        FSDataOutputStream fileOut = fs.create(file, true, job.getInt("io.file.buffer.size", 4096), progress);
        return new UnpaddedRecordWriter<K, V>(fileOut);
    }
}