Yes, it is a good choice to make a career in Big Data. Big Data is one of the top trending technologies today and we can only expect the demand to go higher. But, because of its demand, there are a lot of people planning to get into this field. So, if you are planning to start your career in Big Data, you should work hard. It is good to know that you have learnt about the basics of Hadoop. You will also need good programming and networking skills, so start learning that too.