Last modified: 2010-05-15 15:42:49 UTC
Changes made to the MediaWiki namespace weren't available after updating MediaWiki to version 1.8.2 after runnung
The pages in MediaWiki namespace where still available with all their content, but neither Special:Allmessages nor
the GUI showed the changes anymore.
After investigating with several updated and a freshly installed wiki with Brion he found out, that the reason was
in the objectcache table.
We therefore agreed to include a purge cache function into maintenance/update.php to avoid this problem in future.
Created attachment 2764 [details]
introduce the new function purge_objectcache() and run it by default after updates.
Created attachment 2765 [details]
clean patch from an unmodified source file (function call was already included in old version)
right now I found out (on two different wikis on two different servers): If you don't clear the object cache after upgrading from 1.8.2 to 1.9alpha apache will start using
up all CPU time.
After clearing the cache it worked smoothly.
Fixed in r18531.