Basic questions for recruiter phone screen. Hackerrank test received the following week. I passed all the test cases but got declined right after few days. Not sure if they have private test cases.

-Hackerrank challenge. 3 Questions. 1 easy, 1 tough, 1 SQL - HR Interview Background on Big Data. Explain Project. - 30 min Telephonic call Grilled on AWS Hadoop Infrastructure. HDFS v/s AWS. Which better. Support Answer OS Concepts. inode structure. --Rejected. Get the basics very strong. Revise your own background.