https://bugzilla.wikimedia.org/show_bug.cgi?id=41659

       Web browser: ---
             Bug #: 41659
           Summary: user::addToDatabase hit a key conflict but row doesn't
                    exist
           Product: MediaWiki extensions
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: Unprioritized
         Component: CentralAuth
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected], [email protected],
                    [email protected]
    Classification: Unclassified
   Mobile Platform: ---


Noticed this when trawling through the exception log on fluorine. We have about
136 instances in the log of "Exception from line 3072 of
/usr/local/apache/common-local/php-1.21wmf2/includes/User.php:
User::addToDatabase: hit a key conflict attempting to insert a user row, but
then it doesn't exist when we select it!"

Don't really know if this is translate or centralauth related but here's a
typical stack trace:

23444-2012-11-01 16:29:36 mw24 metawiki: [271da023]
/wiki/Special:BannerRandom?userlang=en&sitename=Wikipedia&project=wikipedia&anonymous=false&bucket=0&country=PH&slot=10
  Exception from line 3072 of
/usr/local/apache/common-local/php-1.21wmf2/includes/User.php:
User::addToDatabase: hit a key conflict attempting to insert a user row, but
then it doesn't exist when we select it!
23445-#0
/usr/local/apache/common-local/php-1.21wmf2/extensions/CentralAuth/CentralAuthHooks.php(568):
User->addToDatabase()
23446-#1
/usr/local/apache/common-local/php-1.21wmf2/extensions/CentralAuth/CentralAuthHooks.php(276):
CentralAuthHooks::attemptAddUser(Object(User), 'XXX')
23447-#2 [internal function]:
CentralAuthHooks::onUserLoadFromSession(Object(User), NULL)
23448-#3 /usr/local/apache/common-local/php-1.21wmf2/includes/Hooks.php(253):
call_user_func_array('CentralAuthHook...', Array)
23449-#4
/usr/local/apache/common-local/php-1.21wmf2/includes/GlobalFunctions.php(3819):
Hooks::run('UserLoadFromSes...', Array)
23450-#5 /usr/local/apache/common-local/php-1.21wmf2/includes/User.php(947):
wfRunHooks('UserLoadFromSes...', Array)
23451-#6 /usr/local/apache/common-local/php-1.21wmf2/includes/User.php(289):
User->loadFromSession()
23452-#7 /usr/local/apache/common-local/php-1.21wmf2/includes/User.php(4125):
User->load()
23453-#8 /usr/local/apache/common-local/php-1.21wmf2/includes/User.php(2223):
User->loadOptions()
23454-#9
/usr/local/apache/common-local/php-1.21wmf2/includes/context/RequestContext.php(276):
User->getOption('language')
23455-#10
/usr/local/apache/common-local/php-1.21wmf2/includes/StubObject.php(183):
RequestContext->getLanguage()
23456-#11
/usr/local/apache/common-local/php-1.21wmf2/includes/StubObject.php(128):
StubUserLang->_newObject()
23457-#12
/usr/local/apache/common-local/php-1.21wmf2/includes/StubObject.php(78):
StubObject->_unstub('getCode', 5)
23458-#13
/usr/local/apache/common-local/php-1.21wmf2/includes/StubObject.php(176):
StubObject->_call('getCode', Array)
23459-#14 [internal function]: StubUserLang->__call('getCode', Array)
23460-#15
/usr/local/apache/common-local/php-1.21wmf2/includes/Message.php(347):
StubUserLang->getCode()
23461:#16
/usr/local/apache/common-local/php-1.21wmf2/extensions/CentralNotice/special/SpecialBannerLoader.php(198):
Message->inLanguage('en')
23462:#17
/usr/local/apache/common-local/php-1.21wmf2/extensions/CentralNotice/special/SpecialBannerLoader.php(126):
SpecialBannerLoader->getMessage('centralnotice-t...')
23463:#18
/usr/local/apache/common-local/php-1.21wmf2/extensions/CentralNotice/special/SpecialBannerLoader.php(86):
SpecialBannerLoader->getNoticeTemplate()
23464:#19
/usr/local/apache/common-local/php-1.21wmf2/extensions/CentralNotice/special/SpecialBannerRandom.php(40):
SpecialBannerLoader->getJsNotice('2012EditorSurve...')
23465-#20
/usr/local/apache/common-local/php-1.21wmf2/includes/SpecialPage.php(599):
SpecialBannerRandom->execute(NULL)
23466-#21
/usr/local/apache/common-local/php-1.21wmf2/includes/SpecialPageFactory.php(497):
SpecialPage->run(NULL)
23467-#22 /usr/local/apache/common-local/php-1.21wmf2/includes/Wiki.php(291):
SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
23468-#23 /usr/local/apache/common-local/php-1.21wmf2/includes/Wiki.php(554):
MediaWiki->performRequest()
23469-#24 /usr/local/apache/common-local/php-1.21wmf2/includes/Wiki.php(447):
MediaWiki->main()
23470-#25 /usr/local/apache/common-local/php-1.21wmf2/index.php(59):
MediaWiki->run()
23471-#26 /usr/local/apache/common-local/live-1.5/index.php(3):
require('/usr/local/apac...')
23472-#27 {main}

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