ok it's a very big number :) no problem at all
in other words if we get 2^64 maybe we will change to 2^128

this could be put in manual just as an information of why use 64bits on gtid, it is interesting 


2013/5/7 Kristian Nielsen <knielsen@knielsen-hq.org>
Roberto Spadim <roberto@spadim.com.br> writes:

> hum, lets think about 10 years, maybe less
> what happen after 2^64 value of the last digit on gtid?
> 1-1-2^64
> it will go back to 0?

It will (and things will break), but to do 2^64 transactions in 10 years, you
need to do 58 billion transactions per second ...

Of course, since binlog files are <name>.NNNNNN, and limited to 1GB per file,
you will reach the limit of max. 10^15 bytes worth of binlog much sooner ...

 - Kristian.



--
Roberto Spadim
SPAEmpresarial