MapReduce is a software framework introduced by Google to support distributed computing on large data sets on clusters of computers.

MapReduce is a software framework introduced by Google to support distributed computing on large data sets on clusters of computers.^[1]

The framework is inspired by map and reduce functions commonly used in functional programming,^[2] although their purpose in the MapReduce framework is not the same as their original forms.^[3]

MapReduce libraries have been written in C++, C#, Erlang, Java, Python, Ruby, F#, R and other programming languages.