Reference to the mapreduce

Question

Explain what do you mean by an input reader in reference to the mapreduce?

Answer 1

The input reader as name suggests primarily has two functions:

a) Reading the Input.

b) Splitting it into sub-parts.

The input reader accepts the user entered problem and then it divides or splits the problem into parts which then each are allocated a map function. Also an input reader will always read the data from the stable storage source only to prevent the problems.