Question

What do you know about Input Format?

Answer 1

Input Format is referred to as a type of MapReduce programming feature. This feature is responsible to provide its support in specifying the different job requirements. It includes the following function: 

1. It is responsible for dividing the input files or the input data into different instances and these instances are called the Input Split. The total number of split files will then be assigned to the different mapping classes to the individual mappers. They will be divided in a logical manner. 

2. The Input Format is also helpful to perform the validation of the input specification job. 

3. Due to more number of mapper processes, the text input is also helpful in the implementation of Record Reader which then also helps in extracting the inputs or data.