DAG – Directed Acyclic Graph A DAG comprises of edges and vertices, in which edges represent rdds and vertices represent…
Why RDD is immutable? What is the need of RDD in spark? RDD – Resilient Distributed Dataset What is…
What is ORC file format? How ORC is better than RC file format? ORC stands for Optimized Record Columnar…
Tell me something about Avro file format. What do you know about Avro files? These are the common question…
You may have come across questions like below during any of your spark interview. So to get full knowledge on…
Many of us might be thinking is really Java required for a Big Data/Spark/Data engineer interview? If yes, what all…
Similar and related questions: How do you cache dataset in Spark? How many ways to cache the data in Spark?…
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What is a shared variable? A variable that is available on all of the executors or nodes that work on…