El 5/16/09 2:43 PM, George Herbert escribió: [snip]
I appreciate what you're saying, but I've been the person who had to clean up several large environments (much larger than WMF) after they let software get too old, and it was very much not pretty.
If you're not keeping currentish and testing new stuff,
[snip]
As a matter of fact, we are keeping currentish and testing new stuff.
Just about everyone's development systems and most third-party MediaWiki installations run on MySQL 5.x, and Domas (a Sun/MySQL support engineer) has been testing MySQL 5.x in limited runs within the Wikimedia cluster over the last year or so. MediaWiki's functionality on MySQL 5.x is well known.
In the meantime, our primary production machines are running time-proven MySQL 4.0.x with up-to-date stability and performance patches maintained by Google -- fixes which have not yet all been rolled back to mainline 5.x.
-- brion vibber (brion @ wikimedia.org)