Windbag MapReduce Application

Motivation

A simple Mapper and two simple Collectors reinforce our understanding of how pieces of the MapReduce puzzle can be reused. Further, we will reduce the value type of Boolean to both an Integer and a Double in two different Collectors.

Background

Polonius' Advice To Laertes

Code To Implement

class:	WindbagMapper.java
methods:	map
package:	mapreduce.apps.windbag.studio
source folder:	student/src/main/java

method: public void map(PlayLine item, BiConsumer<PlayRole, Boolean> keyValuePairConsumer) (sequential implementation only)

class:	TrueCountClassicReducer.java
methods:	finisher
package:	mapreduce.apps.windbag.studio
source folder:	student/src/main/java

method: public Function<List<Boolean>, Integer> finisher() (sequential implementation only)

Warning:This class inherits from ClassicReducer. Be sure to have completed that studio first.

class:	TruePortionClassicReducer.java
methods:	finisher
package:	mapreduce.apps.windbag.studio
source folder:	student/src/main/java

method: public Function<List<Boolean>, Double> finisher() (sequential implementation only)

Warning:This class inherits from ClassicReducer. Be sure to have completed that studio first.

Testing Your Solution

Correctness

class:	WindbagStudioTestSuite.java
package:	mapreduce
source folder:	testing/src/test/java

Output

WindbagApp