QUESTION 5 You are given FOUR (4) documents and have been asked to apply the Mapper & Reducer paradigm. Document A "Peter Piper picked a peck of pickled peppers." Document B "A peck of pickled peppers Peter Piper picked" Document C "If Peter Piper picked a peck of pickled peppers Document D "Where's the peck of pickled peppers Peter Piper Picked?" a) Explain the function of Mapper and Reducer in a MapReduce programming paradigm (8 marks) b) Illustrate the architecture of MapReduce to perform word count on the given documents. (12 marks)