How are keys and values presented and passed to the reducers during a standard sort and shuffle phase of MapReduce?
A. Keys are presented to reducer in sorted order; values for a given key are not sorted.
B. Keys are presented to reducer in sorted order; values for a given key are sorted in ascending order.
C. Keys are presented to a reducer in random order; values for a given key are not sorted.
D. Keys are presented to a reducer in random order; values for a given key are sorted in ascending order.
Answer:A
How are keys and values presented and passed to the reducers during a standard sort and shuffle phase of MapReduce?
A. Keys are presented to reducer in sorted order; values for a given key are not sorted. B. Keys are presented to reducer in sorted order; values for a given key are sorted in ascending order. C. Keys are presented to a reducer in random order; values for a given key are not sorted. D. Keys are presented to a reducer in random order; values for a given key are sorted in ascending order.