I wonder if it will be possible to use replication with GTID's on a 'mixed pool' or MariaDB and MySQL5.6 machines? Is this a concern or not? I see a problem with the CLOUD where users may not be able to choose the server as they want. But if it is *plain impossible* to have both server versions in a setup, that's it of course. However if so this would then be MariaDB's first 'major break-off' from Oracle/MySQL.
-- Peter -- Webyog On Fri, Oct 5, 2012 at 2:54 PM, Kristian Nielsen <[email protected]>wrote: > Hi Kristian, > > Monty asked me to connect with you regarding global transaction IDs in > MariaDB. > > I reviewed some time ago the MySQL 5.6 global transaction ID design and > implementation. Unfortunately I really did not like what I found, to the > point > that I decided this was not something we would want to have or support in > MariaDB (see https://lists.launchpad.net/maria-developers/msg04837.htmlfor an > ealier mail on this). Both you and Giuseppe also had critisisms about it. > > Instead I came up with a (in my opinion) better design. I have now written > this up in (great) detail here: > > https://mariadb.atlassian.net/browse/MDEV-26 > > It would be great if you (/your team) could comment on this and how it > relates > to what you need or any comments/suggestions etc. I know it is a long text, > and a complex problem, so also feel free to just ask me for any > clarifications > or explanations you would like, even without digging through the whole > text. > > The basic idea is to keep the existing concept of a stream of replication > events and a slave's current position within this stream, but in a way > that is > uniform across the whole multi-level replication topology (global > transaction > ID), and that facilitates simple scripting of automated promotion of a new > master. > > I have thought for a long time over this problem and how to best approach > it > and make it work well both with existing replication usage and with new > features like multi-source and parallel replication. It is hard to get > right, > but I am fairly pleased with what I have ended up with so far. I am hopeful > that this will be a good way forward, but I very much welcome any comments > or > alternate suggestions. > > Regards, > > - (the other) Kristian. > > _______________________________________________ > Mailing list: https://launchpad.net/~maria-developers > Post to : [email protected] > Unsubscribe : https://launchpad.net/~maria-developers > More help : https://help.launchpad.net/ListHelp >
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