What is map – side join?
A. Map-side join is done in the map phase and done in memory
B. Map-side join is a technique in which data is eliminated at the map step
C. Map-side join is a form of map-reduce API which joins data from different locations
D. None of these answers are correct
Answer:A
What is map – side join?
A. Map-side join is done in the map phase and done in memory B. Map-side join is a technique in which data is eliminated at the map step C. Map-side join is a form of map-reduce API which joins data from different locations D. None of these answers are correct