com.intel.hadoop.graphbuilder.idnormalize.mapreduce
Class TransEdgeReducer<VidType extends org.apache.hadoop.io.WritableComparable<VidType>>

java.lang.Object
  extended by org.apache.hadoop.mapred.MapReduceBase
      extended by com.intel.hadoop.graphbuilder.idnormalize.mapreduce.TransEdgeReducer<VidType>
Type Parameters:
VidType -
All Implemented Interfaces:
java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

public class TransEdgeReducer<VidType extends org.apache.hadoop.io.WritableComparable<VidType>>
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

This reducer class takes from mapper the input (h(v), [(D(u_i),v_i, data)...]) and output (D(u_i), D(v_i), data). Because the key is based on hash of the rawId, the loading of dictionary is minimized.


Constructor Summary
TransEdgeReducer()
           
 
Method Summary
 void configure(org.apache.hadoop.mapred.JobConf conf)
           
 void reduce(org.apache.hadoop.io.IntWritable key, java.util.Iterator<org.apache.hadoop.io.Text> iter, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> out, org.apache.hadoop.mapred.Reporter reporter)
           
 
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase
close
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.io.Closeable
close
 

Constructor Detail

TransEdgeReducer

public TransEdgeReducer()
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

reduce

public void reduce(org.apache.hadoop.io.IntWritable key,
                   java.util.Iterator<org.apache.hadoop.io.Text> iter,
                   org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> out,
                   org.apache.hadoop.mapred.Reporter reporter)
            throws java.io.IOException
Specified by:
reduce in interface org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>
Throws:
java.io.IOException