I believe you need core programming knowledge to succeed in IT field such as data structure, Linked List, assembly language programming etc. But I don't believe you need to go back to traditional school to get those knowledges. You can study on your own and there are many many online site like edureka, coursera, pluralsight, lynda etc which can help you out. Once you know the basic of core programming then you can pick any subjects like Database, Hadoop, Java, web, testing, sys admin or networking etc. Take you time and don't jump directly into high level technology from the day 1 like Hadoop. Even if you land on the job you will hit the wall in future if you do not have core knowledge. Since you graduated from BS Info system I guess you already have some of those core knowledges.