solve a java task

Micro Java Project (Should take 1-2 hours) Important: We need a strong developer to develop this, but first, tell us your strategy and tools (frameworks, libraries) to solve this. If we are happy with this projects, more projects will be offered. We need to analyze and transform the > 1.000.000 reviews from amazon. Please go to [login to view URL] and download (please take the 300MB csv file): [login to view URL] We are interested in: 1) Finding 1000 most active users (profile names) 2) Finding 1000 most commented food items (item ids). 3) Finding 1000 most used words in the reviews Any errors will be reported by the HTTP codes. - We are interested in clean testable code (add tests if you have time). - How do you make sure that there are no duplicates in the file? - We are interested in using full multi core CPU power. - We will be running this on machine with 500MB of RAM. How do you make sure that we are not using more than that? How are you going to monitor the memory usage of your program? - Our goal is to support the files with up to 100M reviews on multiple machines with 500MB of RAM and 4 core CPUs. How are you going to make it happen? Please provide working code (command to compile and run the program) that prints output of points: 1,2,3 to standard output sorted alphabetically.