I recently switched a job internally after working on Hadoop and Azure for about 3 years at Microsoft. The followings are cited from the farewell note I sent to my old colleagues.
I thought mapreduce was interesting when I first learned Hadoop in school on Linux. When I joined Microsoft after school, it never occurred to me Microsoft would have anything to do with Hadoop let alone Linux. Incredibly, this is where HdInsight is at now, and I was part of it. It is a great and humble learning experience for me to build and grow the first hosted Azure service of open source software and then Linux from very beginning, and I felt lucky for that.
Now begin to build something new!