We've found recently that have a max packet size of 8 MB on our master and on our slaves causes problems. For some reason, slaves will error out during replication on packets that come from the master if they are very close to max_packet_size.

The solution is to set the max_packet_size higher on the slaves than on the master, but we shouldn't have to do this (I don't think). Does replication add some sort of extra header information, etc. that would increase the packet sizes? If so, is there a formula for calculating what the max_packet_size should be in a master/slave/setup?

Thanks,

Matt





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