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org.apache.gora.tutorial.log
Class LogAnalytics

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.gora.tutorial.log.LogAnalytics

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public class LogAnalytics
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

LogAnalytics is the tutorial class to illustrate Gora MapReduce API. The analytics mapreduce job reads the web access data stored earlier by the LogManager, and calculates the aggregate daily pageviews. The output of the job is stored in a Gora compatible data store.

See the tutorial.html file in docs or go to the web sitefor more information.

Nested Class Summary

static class	LogAnalytics.LogAnalyticsMapper The Mapper takes Long keys and Pageview objects, and emits tuples of <url, day> as keys and 1 as values.
static class	LogAnalytics.LogAnalyticsReducer 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.

Constructor Summary

LogAnalytics()

Method Summary

org.apache.hadoop.mapreduce.Job	createJob(DataStore<Long,Pageview> inStore, DataStore<String,MetricDatum> outStore, int numReducer) Creates and returns the Job for submitting to Hadoop mapreduce.
static void	main(String[] args)
int	run(String[] args)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

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.conf.Configurable

getConf, setConf

Constructor Detail

LogAnalytics

public LogAnalytics()

Method Detail

createJob

public org.apache.hadoop.mapreduce.Job createJob(DataStore<Long,Pageview> inStore,
                                                 DataStore<String,MetricDatum> outStore,
                                                 int numReducer)
                                          throws IOException

Creates and returns the Job for submitting to Hadoop mapreduce.

Parameters:

dataStore -

query -

Returns:

Throws:

IOException

run

public int run(String[] args)
        throws Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception