Certified Data Professional (CDP)

Which best reflects the sequence in which data is supplied to a Reducer's reduce function, assuming default settings?

Neither keys nor values are in any predictable order The keys given to a Reducer aren't in a predictable order, but the values associated with those keys always are The keys given to a Reducer are in sorted order, but the values associated with each key are in no predictable order Both the keys and values passed to a Reducer always appear in sorted order

Correct Answer:

The keys given to a Reducer are in sorted order, but the values associated with each key are in no predictable order

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