I don't see a way in DatabaseDescriptor to set the rpc_timeout_in_ms via jmx.
It doesn't seem possible right now. Is there any reason why that couldn't be set via jmx? It seems like a rolling restart to update that is pretty heavy. It would be nice to set it in the yaml and set it via jmx so it wouldn't require restart to take effect immediately. Jeremy btw I'm trying to do that with my analytics nodes - hadoop jobs fail when cycling a single cassandra node - might be 2388 I guess.
