What is Map/Reduce job in Hadoop?

DWQA QuestionsCategory: HadoopWhat is Map/Reduce job in Hadoop?
Editor Staff asked 10 months ago

What is Map/Reduce job in Hadoop?

1 Answers
Editor Staff answered 10 months ago

Map/Reduce job is a programming paradigm which is used to allow massive scalability across the thousands of server.
MapReduce refers to two different and distinct tasks that Hadoop performs. In the first step maps jobs which takes the set of data and converts it into another set of data and in the second step, Reduce job. It takes the output from the map as input and compresses those data tuples into the smaller set of tuples.