Fidelity Investments Big Data Engineer, New Hampshire Interview Questions

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Big Data Engineer, New Hampshire Interview

Anonymous Interview Candidate  in  Merrimack, NH (US)
Anonymous Interview Candidate in Merrimack, NH (US)
Application Details

I applied through an employee referral. The process took 3 weeks - interviewed at Fidelity Investments in February 2013.

Interview Details

First there was a HR call which focused on my Resume. Then the HR itself set me a technical phone interview in two days. Then I got a call from Sr. Software Engineer who asked me basic core java questions like,
Singleton class and how can you see that it has only one instance
Difference between static block and static method
How to get duplicate values from database (clue using having clause)
difference between observer and observable class
what is synchronization and serialization
final, finally and finalize
how to print all the rows in database

Apart from these be prepared with hadoop and mapreduce questions.
Now waiting for the result. If selected will be called for onsite.

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