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Maniphest T25199

special:newmessages gives internal error "Thread 689 has null title" on en wikinews
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Description

Got internal error with big long back traces on [[special:newmessages]] on enwikinews:

Internal error
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Thread 689 has null title

Backtrace:

#0 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1736): LqtView->showThread(Object(Thread), 1, 2, Array)
#1 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1907): LqtView->showThreadReplies(Object(Thread), 0, 25, true, Array, false)
#2 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1736): LqtView->showThread(Object(Thread), 1, 1, Array)
#3 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1907): LqtView->showThreadReplies(Object(Thread), 0, 25, true, Array, false)
#4 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1736): LqtView->showThread(Object(Thread), 1, 1, Array)
#5 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1907): LqtView->showThreadReplies(Object(Thread), 0, 25, true, Array, false)
#6 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1736): LqtView->showThread(Object(Thread), 2, 2, Array)
#7 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1907): LqtView->showThreadReplies(Object(Thread), 0, 25, true, Array, false)
#8 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1736): LqtView->showThread(Object(Thread), 1, 1, Array)
#9 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1907): LqtView->showThreadReplies(Object(Thread), 0, 25, true, Array, false)
#10 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1736): LqtView->showThread(Object(Thread), 1, 1, Array)
#11 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/View.php(1907): LqtView->showThreadReplies(Object(Thread), 0, 25, true, Array, false)
#12 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/pages/NewUserMessagesView.php(211): LqtView->showThread(Object(Thread), 1, 1, Array)
#13 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/pages/NewUserMessagesView.php(156): NewUserMessagesView->showWrappedThread(Object(Thread))
#14 /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/pages/SpecialNewMessages.php(74): NewUserMessagesView->show()
#15 /usr/local/apache/common-local/wmf-deployment/includes/SpecialPage.php(559): SpecialNewMessages->execute(NULL)
#16 /usr/local/apache/common-local/wmf-deployment/includes/Wiki.php(254): SpecialPage::executePath(Object(Title))
#17 /usr/local/apache/common-local/wmf-deployment/includes/Wiki.php(64): MediaWiki->handleSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#18 /usr/local/apache/common-local/wmf-deployment/index.php(117): MediaWiki->performRequestForTitle(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#19 /usr/local/apache/common-local/live-1.5/index.php(3): require('/usr/local/apac...')
#20 {main}

Version: unspecified
Severity: major
URL: http://en.wikinews.org/wiki/special:newmessages

Details

Reference
bz23199

Event Timeline

• bzimport raised the priority of this task from to Medium.Nov 21 2014, 11:05 PM
• bzimport added a project: MediaWiki-extensions-LiquidThreads.
• bzimport set Reference to bz23199.
Bawolff created this task.Apr 15 2010, 3:49 AM
Bawolff added a comment.Apr 15 2010, 3:53 AM

Note: this only happens for my special:newmessages. Other users are not affected (I assume other users don't have thread 689 on their unread thread list?)

Bawolff added a comment.Apr 17 2010, 9:41 PM

Trying to manually mark thread 689 as 'read' using the api by hand results in a 500 error, with no response body....

p.s. This is also now affecting more users than just me on wikinews.

Bawolff added a comment.Apr 17 2010, 10:36 PM

furthermore: http://en.wikinews.org/wiki/Thread:Comments:Row_over_burial_site_for_Polish_president_Lech_Kaczynski/What_kind_of_boat%3F/reply_(11) is blank with status code of 500

Bawolff added a comment.Apr 18 2010, 6:21 AM

Sorry, looks like the 500 error is unrelated to this bug since it happens for any page in the thread namespace that does not exist. Filing as a separate bug.

However, doing http://en.wikinews.org/w/api.php?action=query&list=threads&thid=689&thrender does result in blankpage/500 error, so its probably related.

According to the api, the thread in question has a rootid of 0 - http://en.wikinews.org/w/api.php?action=query&list=threads&thid=689&thprop=parent|ancestor|rootid|type I assume that has something to do with the problem

p.s. Sorry for bugspam, I've commented on this bug 4 times now without anyone else commenting in between...

• werdna added a comment.May 3 2010, 9:30 AM

Should be resolved now.

Bawolff added a comment.May 3 2010, 11:27 PM

Reopening as error is still present on [[special:newmessages]] and http://en.wikinews.org/w/api.php?action=query&list=threads&thid=689&thrender still gives me a blank page + 500 error.

• werdna added a comment.May 9 2010, 9:49 AM

I've made this fail gracefully for now (revision not yet deployed). Also added checks and balances to try to stop these sorts of buggy revisions from creeping into the DB.

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