On 02/18/2014 11:40 AM, Mingfan Lu wrote: > If my server is upgraded to 3.4 while many clients still use 3.3, > is there any problem? or I should update all clients. > 3.4 and 3.3 are protocol compatible. We have not observed anything that would cause problems running 3.3 clients with 3.4 servers or vice-versa. Regards, Vijay