The best thing about opentsdb is that it can be used to store data of different types, such as metrics (CPU utilization) or logs events in real-time without any problems at all! It's very easy for new users who are not familiar with databases like mysql/postgresql etc., because they don't need much knowledge before using this tool - just install & start working!! I have been able to use its features by myself but if you want some help from support team then there will always come something wrong when i am trying out things which makes me feel uncomfortable while learning anything so far.
If anyone wants an alternative solution than go ahead otherwise stick only to what your requirements require! There isn’t really nothing bad related to my experience yet :). Data storage management has become easier now since we started storing our log files into one place instead keeping them separately everywhere!!