CARFAX Systems Developer interview questions

I just got a phone interview. They asked me some question on my resume. Then asked me some techinique questions about hadoop. I didn't prepare very well. Coding part is easy.

Interview process was pretty smooth. I was contacted by a recruiter. There were 3 steps in the interview process. First one was coding challenge in the programming language of your choice. After that I was contacted by the recruiter after a month or so that I was selected for the next step. 2nd step was a technical interview with 3 employees. Instantly after that I was contacted by the recruiter that they were interested in me, and invited me for an onsite interview. They covered the travel cost and everything. Onsite interview was for 4 hours. There was a pair programming in the beginning and 2 technical interviews and 1 hr interview. I was pretty positive that I did well but the next day recruiter told me that I was not selected. Overall the people I met were very good and friendly. I loved their office, their interview process. I will surely try to apply again here in future.