https://bugzilla.wikimedia.org/show_bug.cgi?id=71461
Bug ID: 71461
Summary: [hhvm] MemcachedPeclBagOStuff.php: Error at offset 0
of 6 bytes
Product: MediaWiki extensions
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: WikidataClient
Assignee: wikidata-b...@lists.wikimedia.org
Reporter: aude.w...@gmail.com
CC: wikidata-b...@lists.wikimedia.org
Web browser: ---
Mobile Platform: ---
There is an inconsistency in how hhvm handles / [de]serializes items
(specifically statements) vs. php5.
We have test.wikidata on hhvm only
We have test2.wikipedia which has hhvm as a beta feature, so you can have hhvm
or not.
If I use the property parser function on a connected page, then the entity is
loaded via CachingEntityRevisionLookup (memcached).
If I am using hhvm, then it works. If I use php5 then I get a stacktrace.
If I remove the statements from the associated item, then then no stacktrace on
the test2 page.
Unexpected non-MediaWiki exception encountered, of type
"UnexpectedValueException"
[b084b1ad] /wiki/Kitten Exception from line 124 of
/srv/mediawiki/php-1.25wmf1/includes/objectcache/MemcachedPeclBagOStuff.php:
Error at offset 0 of 6 bytes
Backtrace:
#0 [internal function]: SplObjectStorage->unserialize(string)
#1
/srv/mediawiki/php-1.25wmf1/includes/objectcache/MemcachedPeclBagOStuff.php(124):
Memcached->get(string, NULL, NULL)
#2
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/CachingEntityRevisionLookup.php(107):
MemcachedPeclBagOStuff->get(string)
#3
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/CachingEntityRevisionLookup.php(146):
Wikibase\Lib\Store\CachingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId,
integer)
#4
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/CachingEntityRevisionLookup.php(126):
Wikibase\Lib\Store\CachingEntityRevisionLookup->fetchEntityRevision(Wikibase\DataModel\Entity\ItemId,
integer)
#5
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/RevisionBasedEntityLookup.php(41):
Wikibase\Lib\Store\CachingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId)
#6 [internal function]:
Wikibase\Lib\Store\RevisionBasedEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId)
#7
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/EntityRedirectResolvingDecorator.php(79):
call_user_func_array(array, array)
#8
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/RedirectResolvingEntityLookup.php(50):
Wikibase\Lib\Store\EntityRedirectResolvingDecorator->__call(string, array)
#9
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/lib/includes/store/RedirectResolvingEntityLookup.php(50):
Wikibase\Lib\Store\EntityRedirectResolvingDecorator->getEntity(Wikibase\DataModel\Entity\ItemId)
#10
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/client/includes/DataAccess/PropertyParserFunction/SnaksFinder.php(55):
Wikibase\Lib\Store\RedirectResolvingEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId)
#11
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/client/includes/DataAccess/PropertyParserFunction/LanguageAwareRenderer.php(107):
Wikibase\DataAccess\PropertyParserFunction\SnaksFinder->findSnaks(Wikibase\DataModel\Entity\ItemId,
string, string)
#12
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/client/includes/DataAccess/PropertyParserFunction/LanguageAwareRenderer.php(49):
Wikibase\DataAccess\PropertyParserFunction\LanguageAwareRenderer->getStatus(Wikibase\DataModel\Entity\ItemId,
string)
#13
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/client/includes/DataAccess/PropertyParserFunction/Runner.php(73):
Wikibase\DataAccess\PropertyParserFunction\LanguageAwareRenderer->render(Wikibase\DataModel\Entity\ItemId,
string)
#14
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/client/includes/DataAccess/PropertyParserFunction/Runner.php(120):
Wikibase\DataAccess\PropertyParserFunction\Runner->runPropertyParserFunction(Parser,
string)
#15
/srv/mediawiki/php-1.25wmf1/extensions/Wikidata/extensions/Wikibase/client/includes/hooks/ParserFunctionRegistrant.php(46):
Wikibase\DataAccess\PropertyParserFunction\Runner::render(Parser, string)
#16 [internal function]: Wikibase\Client\Hooks\{closure}(Parser, string)
#17 /srv/mediawiki/php-1.25wmf1/includes/parser/Parser.php(3768):
call_user_func_array(Closure, array)
#18 /srv/mediawiki/php-1.25wmf1/includes/parser/Parser.php(3486):
Parser->callParserFunction(PPFrame_DOM, string, array)
#19 /srv/mediawiki/php-1.25wmf1/includes/parser/Preprocessor_DOM.php(1179):
Parser->braceSubstitution(array, PPFrame_DOM)
#20 /srv/mediawiki/php-1.25wmf1/includes/parser/Parser.php(3296):
PPFrame_DOM->expand(PPNode_DOM, integer)
#21 /srv/mediawiki/php-1.25wmf1/includes/parser/Parser.php(1254):
Parser->replaceVariables(string)
#22 /srv/mediawiki/php-1.25wmf1/includes/parser/Parser.php(420):
Parser->internalParse(string)
#23 /srv/mediawiki/php-1.25wmf1/includes/content/WikitextContent.php(338):
Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#24 /srv/mediawiki/php-1.25wmf1/includes/content/AbstractContent.php(490):
WikitextContent->fillParserOutput(Title, integer, ParserOptions, boolean,
ParserOutput)
#25
/srv/mediawiki/php-1.25wmf1/includes/poolcounter/PoolWorkArticleView.php(139):
AbstractContent->getParserOutput(Title, integer, ParserOptions)
#26 /srv/mediawiki/php-1.25wmf1/includes/poolcounter/PoolCounterWork.php(123):
PoolWorkArticleView->doWork()
#27 /srv/mediawiki/php-1.25wmf1/includes/page/Article.php(688):
PoolCounterWork->execute()
#28 /srv/mediawiki/php-1.25wmf1/includes/actions/ViewAction.php(44):
Article->view()
#29 /srv/mediawiki/php-1.25wmf1/includes/MediaWiki.php(414): ViewAction->show()
#30 /srv/mediawiki/php-1.25wmf1/includes/MediaWiki.php(282):
MediaWiki->performAction(Article, Title)
#31 /srv/mediawiki/php-1.25wmf1/includes/MediaWiki.php(584):
MediaWiki->performRequest()
#32 /srv/mediawiki/php-1.25wmf1/includes/MediaWiki.php(435): MediaWiki->main()
#33 /srv/mediawiki/php-1.25wmf1/index.php(46): MediaWiki->run()
#34 /srv/mediawiki/w/index.php(3): require(string)
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