Why Spark is often preferred over MapReduce?
Apache Spark is an open-source distributed computing system meant for large data processing and analytics.
It offers a single engine for distributed data processing that prioritizes speed, simplicity of use, and customization.
Spark was developed at UC Berkeley's AMPLab and eventually submitted to the Apache Software Foundation.
...
https://www.youtube.com/watch?v=5_bc-2UGZO4