Ask HN: Pls, provide your spark project if you have

Hi guys, i have been working with spark around 5 years, current version of 2.3.0 and i don't know how to work with it on master class. Thats why i decide to locking for a example of using apache spark. If you have any public project, pls share with me, i would like to see the other way of using apache spark. Thanks