How many instance of Input Format will run for specific Map Reduce Job?

[DataFlair Team]

How many instance of Input Format will run for specific Map Reduce Job?

[DataFlair Team]

InputFormat in MapReduce defines how the input files are split up and read. It breaks the file into splits and divides them into records(With RecordReader).
No. of instances the InputFormat will be called is only once for a specific MapReduce job, as its job is only to fetch the input files and logically split them, which is done only at the time of MapReduce job execution.

For more detail please follow: InputFormat in Hadoop

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