If you don't like the experience, assuming your employer isn't punishing you by forcing attendance, you just walk away if you don't like it. Assuming you're not walking away from your job, you're walking away from little more than an entry fee (if any) and some (likely) free food.
Also theres no interview process (again, assuming your boss isn't an evil bastard forcing you to attend as a condition of employment). So not knowing anything about hbase is no disqualifier from attending and being "the hbase guy". Although if you try that unless you're a true genius, or very lucky, don't expect many job offers LOL. Very few job reqs for "candidate will demonstrate 48 hours experience with GNU R" or whatever.
If you don't like the experience, assuming your employer isn't punishing you by forcing attendance, you just walk away if you don't like it. Assuming you're not walking away from your job, you're walking away from little more than an entry fee (if any) and some (likely) free food.
Also theres no interview process (again, assuming your boss isn't an evil bastard forcing you to attend as a condition of employment). So not knowing anything about hbase is no disqualifier from attending and being "the hbase guy". Although if you try that unless you're a true genius, or very lucky, don't expect many job offers LOL. Very few job reqs for "candidate will demonstrate 48 hours experience with GNU R" or whatever.