mysql/percona/maria...

[Elan Ruusamäe]

On 29.10.2016 12:17, Arkadiusz Miśkiewicz wrote:
>>> mysql 5.6 -> 5.7 MAY NOT be upgraded automatically.
> Here oracle 5.7 started fine with percona 5.6 db files but you are probably
> right and in some cases it won't work.
>

percona used to apply some performance patches which changed precision 
of some variables. millisecs vs seconds, resuilting all queries being 
logged to slow.log causing disk to fill up quickly.

that's just one incompatibility, some maybe even use performance_schema 
which maybe is different for those two vendors.

so as long there's no automatic switch of upgrading same package 
replacing with different vendor binary i'm fine. altho i'd prefer to 
stay to percona version because we've been using it for so long. don't 
know what's the difference between maria/percona/oracle versions though. 
probably should search for some comparison table.

-- 
glen