Question: (5) MapReduce and Spark Model (8 marks) (a) Use an example to explain how the MapReduce model can process a word count problem. (3 marks)

(5) MapReduce and Spark Model (8 marks) (a) Use an example

(5) MapReduce and Spark Model (8 marks) (a) Use an example to explain how the MapReduce model can process a "word count" problem. (3 marks) (b) Explain how the MapReduce model can process the relational-algebra operation "selection". Use a concrete example to support your answer. (3 marks) (c) Explain how the Spark model extends the MapReduce model. (2 mark)

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