jobs.MatrixBlockToTextRows.java Source code

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Here is the source code for jobs.MatrixBlockToTextRows.java

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/*
# DARPA XDATA 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.
#
# Copyright 2013 Raytheon BBN Technologies Corp.  All Rights Reserved. 
#
*/

package jobs;

import java.io.*;
//import java.util.StringTokenizer;

import org.apache.hadoop.conf.*;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.*;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.SequenceFileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.mapreduce.Partitioner;
import org.apache.hadoop.filecache.DistributedCache;
import java.net.URI;
import org.apache.hadoop.util.*;

//import com.bbn.fileformats.*;
import fileformats.*;
//import com.bbn.algebra.hadoop.mappers.*;
import mappers.*;
//import com.bbn.algebra.hadoop.reducers.*
import reducers.*;

public class MatrixBlockToTextRows extends Configured implements Tool {

    public int run(String[] args) throws Exception {
        Configuration conf = getConf();

        conf.setInt("N", Integer.parseInt(args[2]));
        conf.setInt("NC", Integer.parseInt(args[3]));
        conf.setInt("SC", Integer.parseInt(args[4]));

        conf.setInt("mapred.reduce.tasks", Integer.parseInt(args[5]));

        conf.set("mapreduce.input.keyvaluelinerecordreader.key.value.separator", "\t");

        //heap space - again - should be passed with the -D option
        conf.set("mapred.map.child.java.opts", "-Xmx3G");
        conf.set("mapred.reduce.child.java.opts", "-Xmx3G");

        //job
        Job job1 = new Job(conf, "MatrixBlockToTextRows");
        job1.setJarByClass(MatrixBlockToTextRows.class);

        // No Map
        FileInputFormat.addInputPath(job1, new Path(args[0]));
        job1.setInputFormatClass(SequenceFileInputFormat.class);
        job1.setMapperClass(MatrixBlockRowPartMapper.class);
        job1.setMapOutputKeyClass(Text.class);
        job1.setMapOutputValueClass(RowPart.class);

        //Reduce       
        job1.setReducerClass(RowPartTextRowsReducer.class);
        job1.setOutputKeyClass(Text.class);
        job1.setOutputValueClass(MatrixBlock.class);
        FileOutputFormat.setOutputPath(job1, new Path(args[1]));
        //job1.setOutputFormatClass(SequenceFileOutputFormat.class);
        job1.setOutputFormatClass(TextOutputFormat.class);

        return job1.waitForCompletion(true) ? 0 : 1;
    }

    public static void main(String[] args) throws Exception {
        Configuration conf = new Configuration();
        int res = ToolRunner.run(conf, new MatrixBlockToTextRows(), args);
        System.exit(res);
    }
}