Certified Data Professional (CDP)

During a typical sort and shuffle phase of MapReduce, how are keys and data presented and delivered to Reducers?

Keys are presented to a Reducer in sorted order; values for a given key are not sorted Keys are presented to a Reducer in sorted order; values for a given key are sorted in ascending orde Keys are presented to a Reducer in random order; values for a given key are sorted in ascending order Keys are presented to a Reducer in random order; values for a given key are not sorted

Correct Answer:

Keys are presented to a Reducer in sorted order; values for a given key are not sorted

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