FAQ

Riak MDC Replication FAQ

Can fullsync replication run between clusters having rings of different sizes?

- No

Can realtime replication run between clusters having different n values?

- Yes, but very inefficiently

How can it be determined if backpressure is being applied during replication?

- look at `netstat -a` output and see if Recv-Q and Send-Q and growing

How can network performance between source + sink be measured

- iperf 

Do replicated puts show up in riak-admin status stats?

- yes, here are the rt puts for a single object on a sink with an n_val=3:

vnode_puts : 3
vnode_puts_total : 3

- see also:
 https://github.com/basho/riak_repl/blob/develop/src/riak_repl_util.erl#L109 

Do bucket hooks on the sink fire?

- No, puts on the sink use `disable_hooks`: https://github.com/basho/riak_repl/blob/develop/src/riak_repl_util.erl#L117

What happens when the same keys are written into both source and sink?

• be extra darn careful about resolving siblings on either side!
• kittens die