Masters thesis topics in big data I am looking for a thesis to complete my master M2, I will work on a topic in the big data's field (creation big data applications), using hadoop/mapReduce and Ecosystem ( visualisation, analysis ...), Please suggest some topics or project that would make for a good masters thesis subject.
I add that I have bases in data warehouses, databases, data mining, good skills in programming, system administration and cryptography ... 

Thanks
Since it's a master's thesis, how about writing something regarding decision trees, and their "upgrades": boosting and Random Forests? And then integrate that with Map/Reduce, together with showing how to scale a Random Forest on Hadoop using M/R?