Question
What is InputFormat in Hadoop?
Answers
Another important feature in MapReduce programming, InputFormat defines the input specifications for a job. It performs the following functions:

Validates the input-specification of job.
Split the input file(s) into logical instances called InputSplit. Each of these split files are then assigned to individual Mapper.
Provides implementation of RecordReader to extract input records from the above instances for further Mapper processing   Your Comment




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