Question: . Review Figure 10-15 and answer the following questions based on it. a. What has happened between Input and Input? b. Assume that the values

. Review Figure 10-15 and answer the following questions based on it.

a. What has happened between Input and Input’?

b. Assume that the values associated with each of the keys (k1, k2, and so forth) are counts. What is the purpose of the Shuffle stage?

c. If the overall goal is to count the number of instances per key, what does the role of the Reduce stage have to be?

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