Question

What is the primary purpose of the Reduce phase in a MapReduce program?

a.

To execute the Map function

b.

To transfer files from Map nodes' local disks

c.

To store output records with the same hash value

d.

To process or combine records assigned to it and write output records

Posted under Big Data Computing

Answer: (d).To process or combine records assigned to it and write output records Explanation:The primary purpose of the Reduce phase in a MapReduce program is to process or combine records assigned to it and write output records as part of the computation's final output.

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Q. What is the primary purpose of the Reduce phase in a MapReduce program?

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