Reasons:
- Riak DB development is almost halted after Basho
- riak-erlang-client is abandoned and doesn't work
correctly with OTP22
- Riak is slow in comparison to other databases
- Missing key ordering makes it impossible to implement range
queries efficiently (e.g. MAM queries)
Suggest specifying 'localhost' as host name part of the MySQL test
account name. Otherwise, the anonymous user that is usually created by
default for 'localhost' would take precedence for local connections due
to the more specific host name.
