org.apache.mahout.math.hadoop

Class MatrixMultiplicationJob.MatrixMultiplyMapper

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

org.apache.mahout.math.hadoop.MatrixMultiplicationJob.MatrixMultiplyMapper

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.IntWritable,org.apache.hadoop.mapred.join.TupleWritable,org.apache.hadoop.io.IntWritable,VectorWritable>

Enclosing class:

MatrixMultiplicationJob

public static class MatrixMultiplicationJob.MatrixMultiplyMapper
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.IntWritable,org.apache.hadoop.mapred.join.TupleWritable,org.apache.hadoop.io.IntWritable,VectorWritable>

Constructor Summary

Constructors

Constructor and Description
MatrixMultiplyMapper()

Method Summary

Modifier and Type	Method and Description
void	configure(org.apache.hadoop.mapred.JobConf conf)
void	map(org.apache.hadoop.io.IntWritable index, org.apache.hadoop.mapred.join.TupleWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.MapReduceBase

close

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.io.Closeable

close

Constructor Detail

MatrixMultiplyMapper

public MatrixMultiplyMapper()

Method Detail

configure

public void configure(org.apache.hadoop.mapred.JobConf conf)

Specified by:

configure in interface org.apache.hadoop.mapred.JobConfigurable

Overrides:

configure in class org.apache.hadoop.mapred.MapReduceBase

map

public void map(org.apache.hadoop.io.IntWritable index,
                org.apache.hadoop.mapred.join.TupleWritable v,
                org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out,
                org.apache.hadoop.mapred.Reporter reporter)
         throws IOException

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.IntWritable,org.apache.hadoop.mapred.join.TupleWritable,org.apache.hadoop.io.IntWritable,VectorWritable>

Throws:

IOException