Amazon Data Engineer interview questions

the process had 3 rounds.The first being online mcq's consisting of 40 followed by 2 rounds of Technical interview.The first round had questions from sql,java,aptitude(statistics) and c basics.In second and 3rd round questions were asked from data structures ,java and sql.

Initially I had to submit an assessment, which I cleared, then I had to give a phone interview, which was basically to write code . The interviewer was extremely rude, and not clear with his questions, and snapped like 2 times during the process, which kind of made me more nervous. I understand I was not good enough for the position, but the interviewer was not at all professional, and snapping was not required. If you feel you are better than everybody, you don't need to be rude it. It can be handled in a calm and professional manner.