Big Data Technology & Architecture

Sep 1, 2021 · Big Data

Understanding Hadoop Data Splitting and InputFormat Mechanisms

This article explains Hadoop's data splitting concepts, the distinction between HDFS blocks and logical InputSplits, details the source code of various InputFormats such as TextInputFormat, CombineTextInputFormat, KeyValueTextInputFormat, NLineInputFormat, and custom InputFormats, and provides complete Java examples for Mapper, Reducer, and driver classes.