What is Bucketing? Why do we need Bucketing? How it is going to improve query performance? Bucketing Bucketing is…
Similar questions: How can we optimize a Hive job? As we deal with data of size terabytes and petabytes the…
Why do we need partitioning in Hive? What are the types of partitioning in Hive? Above are example questions that…
Most frequently asked interview question, when you say you have very good knowledge in Java. Below are similar questions: Can…
What are the techniques to optimize a Spark job? This is a super important question for a Big data developer…
One of the most common interview questions in big data developer interviews. I was asked this question in almost all…
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…
Why the block is large in Hadoop? What is the use of having large block size in Hadoop? These…
What is ORC file format? How ORC is better than RC file format? ORC stands for Optimized Record Columnar…