What is reduce - side join?
A. Reduce-side join is a technique to eliminate data from initial data set at reduce step
B. Reduce-side join is a technique for merging data from different sources based on a specific key.
C. Reduce-side join is a set of API to merge data from different sources.
D. None of these answers are correct
Answer:B
What is reduce - side join?
A. Reduce-side join is a technique to eliminate data from initial data set at reduce step B. Reduce-side join is a technique for merging data from different sources based on a specific key. C. Reduce-side join is a set of API to merge data from different sources. D. None of these answers are correct