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Declarative Machine Learning
/*
* 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.sysml.runtime.matrix;
import java.util.HashSet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RunningJob;
import org.apache.sysml.conf.ConfigurationManager;
import org.apache.sysml.conf.DMLConfig;
import org.apache.sysml.runtime.instructions.MRJobInstruction;
import org.apache.sysml.runtime.matrix.data.CM_N_COVCell;
import org.apache.sysml.runtime.matrix.data.InputInfo;
import org.apache.sysml.runtime.matrix.data.OutputInfo;
import org.apache.sysml.runtime.matrix.data.TaggedFirstSecondIndexes;
import org.apache.sysml.runtime.matrix.mapred.CMCOVMRMapper;
import org.apache.sysml.runtime.matrix.mapred.CMCOVMRReducer;
import org.apache.sysml.runtime.matrix.mapred.MRConfigurationNames;
import org.apache.sysml.runtime.matrix.mapred.MRJobConfiguration;
import org.apache.sysml.runtime.matrix.mapred.MRJobConfiguration.ConvertTarget;
public class CMCOVMR
{
private static final Log LOG = LogFactory.getLog(CMCOVMR.class.getName());
private CMCOVMR() {
//prevent instantiation via private constructor
}
public static JobReturn runJob(MRJobInstruction inst, String[] inputs, InputInfo[] inputInfos, long[] rlens, long[] clens,
int[] brlens, int[] bclens, String instructionsInMapper, String cmNcomInstructions,
int numReducers, int replication, byte[] resultIndexes, String[] outputs, OutputInfo[] outputInfos)
throws Exception
{
JobConf job = new JobConf(CMCOVMR.class);
job.setJobName("CM-COV-MR");
//whether use block representation or cell representation
MRJobConfiguration.setMatrixValueClassForCM_N_COM(job, true);
//added for handling recordreader instruction
String[] realinputs=inputs;
InputInfo[] realinputInfos=inputInfos;
long[] realrlens=rlens;
long[] realclens=clens;
int[] realbrlens=brlens;
int[] realbclens=bclens;
byte[] realIndexes=new byte[inputs.length];
for(byte b=0; b mapoutputIndexes=MRJobConfiguration.setUpOutputIndexesForMapper(job, realIndexes, instructionsInMapper, null,
cmNcomInstructions, resultIndexes);
//set up the multiple output files, and their format information
MRJobConfiguration.setUpMultipleOutputs(job, resultIndexes, new byte[resultIndexes.length], outputs, outputInfos, false);
// configure mapper and the mapper output key value pairs
job.setMapperClass(CMCOVMRMapper.class);
job.setMapOutputKeyClass(TaggedFirstSecondIndexes.class);
job.setMapOutputValueClass(CM_N_COVCell.class);
job.setOutputKeyComparatorClass(TaggedFirstSecondIndexes.Comparator.class);
job.setPartitionerClass(TaggedFirstSecondIndexes.TagPartitioner.class);
//configure reducer
job.setReducerClass(CMCOVMRReducer.class);
//job.setReducerClass(PassThroughReducer.class);
MatrixCharacteristics[] stats=MRJobConfiguration.computeMatrixCharacteristics(job, realIndexes,
instructionsInMapper, null, null, cmNcomInstructions, resultIndexes, mapoutputIndexes, false).stats;
//set up the number of reducers
MRJobConfiguration.setNumReducers(job, mapoutputIndexes.size(), numReducers);//each output tag is a group
// Print the complete instruction
if (LOG.isTraceEnabled())
inst.printCompleteMRJobInstruction(stats);
// By default, the job executes in "cluster" mode.
// Determine if we can optimize and run it in "local" mode.
MatrixCharacteristics[] inputStats = new MatrixCharacteristics[inputs.length];
for ( int i=0; i < inputs.length; i++ ) {
inputStats[i] = new MatrixCharacteristics(rlens[i], clens[i], brlens[i], bclens[i]);
}
//set unique working dir
MRJobConfiguration.setUniqueWorkingDir(job);
RunningJob runjob=JobClient.runJob(job);
return new JobReturn(stats, outputInfos, runjob.isSuccessful());
}
}