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What is Map Reduce in Hadoop? |
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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. |
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