cascading.flow.hadoop

Class FlowReducer

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

cascading.flow.hadoop.FlowReducer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer

public class FlowReducer
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Reducer

Class FlowReducer is the Hadoop Reducer implementation.

Constructor Summary

Constructors

Constructor and Description
FlowReducer() Constructor FlowReducer creates a new FlowReducer instance.

Method Summary

Modifier and Type	Method and Description
void	close()
void	configure(org.apache.hadoop.mapred.JobConf jobConf)
void	reduce(java.lang.Object key, java.util.Iterator values, org.apache.hadoop.mapred.OutputCollector output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class java.lang.Object

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

Constructor Detail

FlowReducer

public FlowReducer()

Constructor FlowReducer creates a new FlowReducer instance.

Method Detail

configure

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

Specified by:

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

Overrides:

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

reduce

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

Specified by:

reduce in interface org.apache.hadoop.mapred.Reducer

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

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

Throws:

java.io.IOException