org.apache.gora.tutorial.log

Class LogAnalytics.LogAnalyticsMapper

java.lang.Object

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

org.apache.gora.mapreduce.GoraMapper<Long,Pageview,TextLong,org.apache.hadoop.io.LongWritable>

org.apache.gora.tutorial.log.LogAnalytics.LogAnalyticsMapper

Enclosing class:

LogAnalytics

public static class LogAnalytics.LogAnalyticsMapper
extends GoraMapper<Long,Pageview,TextLong,org.apache.hadoop.io.LongWritable>

The Mapper takes Long keys and Pageview objects, and emits tuples of <url, day> as keys and 1 as values. Input values are read from the input data store. Note that all Hadoop serializable classes can be used as map output key and value.

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
LogAnalytics.LogAnalyticsMapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	map(Long key, Pageview pageview, org.apache.hadoop.mapreduce.Mapper.Context context)
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)

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

initMapperJob, initMapperJob, initMapperJob, initMapperJob, initMapperJob

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

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

LogAnalytics.LogAnalyticsMapper

public LogAnalytics.LogAnalyticsMapper()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
              throws IOException,
                     InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<Long,Pageview,TextLong,org.apache.hadoop.io.LongWritable>

Throws:

IOException

InterruptedException

map

protected void map(Long key,
       Pageview pageview,
       org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<Long,Pageview,TextLong,org.apache.hadoop.io.LongWritable>

Throws:

IOException

InterruptedException