How long does it take to learn spark?

Related questions

1. What is spark language used for?
2. How is Hadoop different from spark?
3. Do I need Scala for spark?
4. Why should I learn spark?
5. What is faster than Apache spark?
6. Why do we need spark?
7. What is spark in Hadoop?
8. Why spark is used in Hadoop?
9. How do I start learning spark?

Tags

1. #depends
2. #adequate
3. #programming
4. #exposer
5. #spark
6. #object
7. #functional
8. #course
9. #should
10. #enough
11. #provided
12. #basic
13. #oriented
14. #suffice