Which best describes what the map method accepts and emits?
A) It accepts a single key-value pair as input and emits a single key and list of corresponding values as output.
B) It accepts a single key-value pairs as input and can emit only one key-value pair as output.
C) It accepts a list key-value pairs as input and can emit only one key-value pair as output.
D) It accepts a single key-value pairs as input and can emit any number of key-value pair as output, including zero.

Question

Quizplus · Accepted Answer

The map method in MapReduce accepts a single key-value pair as input and can emit any number of key-value pairs as output, including zero.

Which Best Describes What the Map Method Accepts and Emits