Identify the second step the MapReduce platform performs to solve problems of big data computation.
A) Provide SQL-like query to access data stored in different file systems and databases.
B) Map the data by dividing it into manageable subsets.
C) Distribute data to a group of networked computers for storing and processing.
D) Combine the answers from the computer nodes into a single answer for the original problem handled.

Question

Quizplus · Accepted Answer

The second step in the MapReduce process, after mapping the data into manageable subsets, is to reduce the data. This involves combining the answers from the individual nodes into a single answer for the original problem, which is what choice D describes.

Identify the Second Step the MapReduce Platform Performs to Solve