On Thu, Sep 27, 2012 at 7:58 PM, Platonides <platoni...@gmail.com> wrote: > On 27/09/12 01:07, Ryan Lane wrote: >>>> We currently have no plans for having the user databases on the same >>>> servers as the replicated databases. Direct joins will not be >>>> possible, so tools will need to be modified. >>> >>> -50 >>> >>> It's such a useful feature, that it would be worth making a local mysql >>> slaves for having them. >>> I know, the all-powerful labs environment is unable to run a mysql >>> instance, but we could use MySQL cluster, trading memory (available) to >>> get joins (denied). >>> >> >> I'm not the one setting up the databases. If you want information >> about why this won't be available, talk to Asher (binasher in >> #wikimedia-operations on Freenode). Maybe he can be convinced >> otherwise. >> >> Of course, in the production cluster we don't do joins this way. We >> handle the joins in the app logic, which is a more appropriate way of >> doing this. > > I disagree. In production you can just create a new table in the wiki > db. We can't create new tables there in the toolserver (the dbs are a > mirror or what there is in production). Thus, we create a new db in the > same server and use a cross-db join instead of joining a new table. > > Joining several wiki tables is probably more strange, with the exception > of commons, which is more often joined to others, as the commons images > "are also at the local wikis". > Which brings us to the next point, will the commons database be replicated to all clusters, like the toolserver?
Bryan _______________________________________________ Toolserver-l mailing list (Toolserver-l@lists.wikimedia.org) https://lists.wikimedia.org/mailman/listinfo/toolserver-l Posting guidelines for this list: https://wiki.toolserver.org/view/Mailing_list_etiquette
