Why should I use spark?
What is graphx spark?
How do we represent data in Spark?
Explain foreach() operation in apache spark?
How many ways can you create rdd in spark?
What happens when we submit a spark job?
What is a spark shuffle?
When to use spark sql?
What database does spark use?
Is spark secure?
What is off heap memory in spark?
How do I clear my spark cache?
What is dag spark?
What file systems Spark support?
Explain the key features of Spark.