Last modified: 2014-06-12 00:32:42 UTC
It seems asking for WhatLinkshere on one wiki causes exceptions when there are links to it on another wiki. Happens on enwiki for File:OUYA-Console-set-h.jpg, which I linked on mw.org, also on enwiki for Talk:Sandbox, Template:Bug, etc. But this doesn't happen on meta-wiki which is running the same version, or on mw.org. Confusing. Perhaps the Flow hook that tries to create a link on WhatLinksHereProp needs to be more robust. Or maybe we need to run maintenance/FlowPopulateLinksTables.php against multiple wikis. Here's one: 2014-05-29 17:52:55 mw1076 enwiki: [12257f85] /wiki/Special:WhatLinksHere/File:OUYA-Console-set-h.jpg Exception from line 182 of /usr/local/apache/common-local/php-1.24wmf5/extensions/Flow/includes/Model/Workflow.php: Interwiki to mediawikiwiki not implemented #0 /usr/local/apache/common-local/php-1.24wmf5/extensions/Flow/includes/BaseUrlGenerator.php(171): Flow\Model\Workflow->getArticleTitle() #1 /usr/local/apache/common-local/php-1.24wmf5/extensions/Flow/includes/UrlGenerator.php(202): Flow\BaseUrlGenerator->resolveTitle(NULL, Object(Flow\Model\UUID)) #2 /usr/local/apache/common-local/php-1.24wmf5/extensions/Flow/includes/ReferenceClarifier.php(50): Flow\UrlGenerator->postLink(NULL, Object(Flow\Model\UUID), Object(Flow\Model\UUID)) #3 /usr/local/apache/common-local/php-1.24wmf5/extensions/Flow/includes/ReferenceClarifier.php(28): Flow\ReferenceClarifier->getObjectLink(Object(Flow\Model\UUID), 'post', Object(Flow\Model\UUID)) #4 /usr/local/apache/common-local/php-1.24wmf5/extensions/Flow/Hooks.php(620): Flow\ReferenceClarifier->getWhatLinksHereProps(Object(stdClass), Object(Title), Object(Title)) #5 [internal function]: FlowHooks::onWhatLinksHereProps(Object(stdClass), Object(Title), Object(Title), Array) #6 /usr/local/apache/common-local/php-1.24wmf5/includes/Hooks.php(206): call_user_func_array('FlowHooks::onWh...', Array) #7 /usr/local/apache/common-local/php-1.24wmf5/includes/GlobalFunctions.php(4004): Hooks::run('WhatLinksHerePr...', Array, NULL) #8 /usr/local/apache/common-local/php-1.24wmf5/includes/specials/SpecialWhatlinkshere.php(329): wfRunHooks('WhatLinksHerePr...', Array) #9 /usr/local/apache/common-local/php-1.24wmf5/includes/specials/SpecialWhatlinkshere.php(272): SpecialWhatLinksHere->listItem(Object(stdClass), Object(Title), Object(Title))
It seems that we are loading links by namespace/title pair. If a page with the same namespace/title exists in multitple wikis, this would load unwanted data from other wikis. I think this could be resolved in two steps: 1. Catch the exception and ignore unrelated reference 2. Add a wiki field to flow_wiki_ref so only to load reference for the page in current wiki, remove the exception in step 1.
Change 136256 had a related patch set uploaded by Bsitu: Ignore expected exceptions in WhatLinksHere https://gerrit.wikimedia.org/r/136256
*** Bug 65802 has been marked as a duplicate of this bug. ***
Change 136280 had a related patch set uploaded by Werdna: Segregate Reference objects by source wiki. https://gerrit.wikimedia.org/r/136280
Change 136256 merged by jenkins-bot: Ignore expected exceptions in WhatLinksHere https://gerrit.wikimedia.org/r/136256
Change 136932 had a related patch set uploaded by Spage: Ignore expected exceptions in WhatLinksHere https://gerrit.wikimedia.org/r/136932
Change 136932 merged by jenkins-bot: Ignore expected exceptions in WhatLinksHere https://gerrit.wikimedia.org/r/136932
Change 136933 had a related patch set uploaded by Spage: Ignore expected exceptions in WhatLinksHere https://gerrit.wikimedia.org/r/136933
Change 136933 merged by jenkins-bot: Ignore expected exceptions in WhatLinksHere https://gerrit.wikimedia.org/r/136933
We're no longer getting these. We're getting Flow Interwiki exceptions from certain Special:Contributions
