Question

Point out the correct statement.

(a) MapReduce tries to place the data and the compute as close as possible

(b) Map Task in MapReduce is performed using the Mapper() function

(c) Reduce Task in MapReduce is performed using the Map() function

(d) All of the mentioned

I have been asked this question in final exam.

The above asked question is from Introduction to Mapreduce in portion Mapreduce of Hadoop

Answer 1

Right option is (a) MapReduce tries to place the data and the compute as close as possible

For explanation I would say: This feature of MapReduce is “Data Locality”.