edu.yale.cs.hadoopdb.benchmark
Class JoinTaskHDFS.Phase1Reduce

java.lang.Object
  org.apache.hadoop.mapred.MapReduceBase
      edu.yale.cs.hadoopdb.benchmark.JoinTaskHDFS.Phase1Reduce

All Implemented Interfaces:

java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Enclosing class:

JoinTaskHDFS

 class JoinTaskHDFS.Phase1Reduce
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Field Summary

protected java.lang.StringBuilder	newValue
protected org.apache.hadoop.io.Text	outputKey
protected org.apache.hadoop.io.Text	outputValue

Constructor Summary

JoinTaskHDFS.Phase1Reduce()

Method Summary

void	reduce(org.apache.hadoop.io.Text key, java.util.Iterator<org.apache.hadoop.io.Text> values, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> output, org.apache.hadoop.mapred.Reporter reporter)

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

close, configure

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.JobConfigurable

configure

Methods inherited from interface java.io.Closeable

close

Field Detail

newValue

protected java.lang.StringBuilder newValue

outputKey

protected org.apache.hadoop.io.Text outputKey

outputValue

protected org.apache.hadoop.io.Text outputValue

Constructor Detail

JoinTaskHDFS.Phase1Reduce

JoinTaskHDFS.Phase1Reduce()

Method Detail

reduce

public void reduce(org.apache.hadoop.io.Text key,
                   java.util.Iterator<org.apache.hadoop.io.Text> values,
                   org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text> output,
                   org.apache.hadoop.mapred.Reporter reporter)
            throws java.io.IOException

Specified by:

reduce in interface org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Throws:

java.io.IOException