Tip 1 : Try to solve as much SQL questions.
Tip 2 : Learn how spark works and its architecture
Tip 1: Have an understanding of your current project
Tip 2: Try to drive the interview around your strong concepts
Given an employee table find the name of the employee who has the nth highest salary. (Practice)
Given a table with names of team for IPL create a table to depict all the matches for ex. CSK vs MI, MI vs SRH
Difference between Partitioning and Bucketing. (Learn)
How would you create a data pipeline and what all components would you use to create a job which triggers on file upload on s3 and sends an email notification after completion

Here's your problem of the day
Solving this problem will increase your chance to get selected in this company
How do you remove whitespace from the start of a string?