I tried to restore pages on als.wikipedia.org, which have been deleted in 2004, e. g. https://als.wikipedia.org/wiki/Wikipedia:Protection_log or https://als.wikipedia.org/w/index.php?title=Wikipedia:Upload_log
Unfortunately I couldn't restore them, instead I got this error message:
[WsUTMQpAAEYAAAnAsjMAAAAW] 2018-04-04 18:02:25: Fatal exception of type "LogicException"]
Could you please help me?
Thanks a lot.
[WsUTMQpAAEYAAAnAsjMAAAAW] /w/index.php?title=Spezial:Widerh%C3%A4rstelle&action=submit LogicException from line 174 of /srv/mediawiki/php-1.31.0-wmf.27/includes/Storage/SlotRecord.php: Mismatching revision ID 819358: The slot already belongs to revision 0. Use SlotRecord::newInherited() to re-use content between revisions.
#0 /srv/mediawiki/php-1.31.0-wmf.27/includes/Storage/RevisionStore.php(458): MediaWiki\Storage\SlotRecord::newSaved(integer, integer, string, MediaWiki\Storage\SlotRecord)
#1 /srv/mediawiki/php-1.31.0-wmf.27/includes/Revision.php(1124): MediaWiki\Storage\RevisionStore->insertRevisionOn(MediaWiki\Storage\RevisionArchiveRecord, Wikimedia\Rdbms\DatabaseMysqli)
#2 /srv/mediawiki/php-1.31.0-wmf.27/includes/page/PageArchive.php(681): Revision->insertOn(Wikimedia\Rdbms\DatabaseMysqli)
#3 /srv/mediawiki/php-1.31.0-wmf.27/includes/page/PageArchive.php(422): PageArchive->undeleteRevisions(array, boolean, string)
#4 /srv/mediawiki/php-1.31.0-wmf.27/includes/specials/SpecialUndelete.php(1147): PageArchive->undelete(array, string, array, boolean, User)
#5 /srv/mediawiki/php-1.31.0-wmf.27/includes/specials/SpecialUndelete.php(201): SpecialUndelete->undelete()
#6 /srv/mediawiki/php-1.31.0-wmf.27/includes/specialpage/SpecialPage.php(522): SpecialUndelete->execute(NULL)
#7 /srv/mediawiki/php-1.31.0-wmf.27/includes/specialpage/SpecialPageFactory.php(568): SpecialPage->run(NULL)
#8 /srv/mediawiki/php-1.31.0-wmf.27/includes/MediaWiki.php(288): SpecialPageFactory::executePath(Title, RequestContext)
#9 /srv/mediawiki/php-1.31.0-wmf.27/includes/MediaWiki.php(861): MediaWiki->performRequest()
#10 /srv/mediawiki/php-1.31.0-wmf.27/includes/MediaWiki.php(524): MediaWiki->main()
#11 /srv/mediawiki/php-1.31.0-wmf.27/index.php(42): MediaWiki->run()
#12 /srv/mediawiki/w/index.php(3): include(string)
#13 {main}It looks like this has been happening on a couple of wikis
https://logstash.wikimedia.org/goto/ff0edf847c674d5e095f0b6621200ccf
alswiki arwiki enwikinews hiwiki iswiki
I suppose the underlying issue here is ar_revision_id being 0. That should have been fixed by T191307: Run maintenance/populateArchiveRevId.php on all wikis. Does the problem still persist?
One possible workaround would be to make SlotRecord (and perhaps other code) treat a revision id being 0 the same as the revision id being null. But I'd like to avoid that - I'd rather fail more aggressively on the revision ID being 0, since that should no longer happen after the above script has been run.