Question - What is Map Reduce in Hadoop?
Answer -
Hadoop MapReduce is a software framework for processing enormous data sets. It is the main component for data processing in the Hadoop framework. It divides the input data into several parts and runs a program on every data component parallel. The word MapReduce refers to two separate and different tasks. The first is the map operation, which takes a set of data and transforms it into a diverse collection of data, where individual elements are divided into tuples. The reduce operation consolidates those data tuples based on the key and subsequently modifies the value of the key.