https://bugzilla.wikimedia.org/show_bug.cgi?id=20451
Summary: Occasional message cache failure
Product: MediaWiki
Version: 1.16-svn
Platform: All
OS/Version: All
Status: NEW
Severity: major
Priority: Normal
Component: Internationalization
AssignedTo: [email protected]
ReportedBy: [email protected]
All customisations are lost occasionally. This happens only when using
memcached, not with APC. The most visible problem is the default sidebar which
gets stuck in the cache when this happens. I have no idea how to debug this,
but I've implemented a workaround which throws an exception if bad sidebar is
detected before it is cached.
There doesn't seem to be any pattern on the requests on which this appear, they
all have same backtrace to the sidebar:
#0 /var/www/w/includes/SkinTemplate.php(472): Skin->buildSidebar()
#1 /var/www/w/includes/OutputPage.php(1171):
SkinTemplate->outputPage(Object(OutputPage))
#2 /var/www/w/includes/Wiki.php(356): OutputPage->output()
#3 /var/www/w/index.php(118): MediaWiki->finalCleanup(Array,
Object(OutputPage))
#4 {main}
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