What is the difference between Spark standalone and Local mode?
Spark standalone is a resource manager which can work on a cluster. It is simply the built in resource manager as opposed to an external one like yarn.
Spark local runs without any resource manager, everything runs in a single jvm (you can decide the number of threads). This is aimed for testing locally.
来源：https://stackoverflow.com/questions/40828302/difference-between-spark-standalone-and-local-mode