org.apache.gora.tutorial.log

Class LogAnalytics.LogAnalyticsReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<K1,V1,K2,V2>

org.apache.gora.mapreduce.GoraReducer<TextLong,org.apache.hadoop.io.LongWritable,String,MetricDatum>

org.apache.gora.tutorial.log.LogAnalytics.LogAnalyticsReducer

Enclosing class:

LogAnalytics

public static class LogAnalytics.LogAnalyticsReducer
extends GoraReducer<TextLong,org.apache.hadoop.io.LongWritable,String,MetricDatum>

The Reducer receives tuples of <url, day> as keys and a list of values corresponding to the keys, and emits a combined keys and MetricDatum objects. The metric datum objects are stored as job outputs in the output data store.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

Constructors

Constructor and Description
LogAnalytics.LogAnalyticsReducer()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	reduce(TextLong tuple, Iterable<org.apache.hadoop.io.LongWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class org.apache.gora.mapreduce.GoraReducer

initReducerJob, initReducerJob, initReducerJob

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

cleanup, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

LogAnalytics.LogAnalyticsReducer

public LogAnalytics.LogAnalyticsReducer()

Method Detail

reduce

protected void reduce(TextLong tuple,
          Iterable<org.apache.hadoop.io.LongWritable> values,
          org.apache.hadoop.mapreduce.Reducer.Context context)
               throws IOException,
                      InterruptedException

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<TextLong,org.apache.hadoop.io.LongWritable,String,MetricDatum>

Throws:

IOException

InterruptedException