I applied through a recruiter. The process took 1 day. I interviewed at dunnhumby (Gurgaon, Haryana) in Mar 2019
Interview
It was having 3 rounds, two technical and one managerial.
It was swift throughout and sometimes we got into detailed discussions.
They focused on the basics of hdfs, spark and working experience with problems that are faced.
Got the feedback in a week.
Interview questions [1]
Question 1
About yourself and few technical questions related to Hadoop architecture and hdfs and spark transformation