Spark is a second generation computing environment that sits on top of a Hadoop system, supporting the workflows that leverage a distributed file system. It improves on the performance of the initial Hadoop computational paradigm, MapReduce, via fast functional programming capabilities and the use of virtual memory caching.
Planning on taking an introductory statistics course, but not sure if you need to start at the beginning? Review the course description for each of our introductory statistics courses and estimate which best matches your level, then take the self test for that course. If you get all or almost all the questions correct, move on and take the next test.