You are browsing a read-only backup copy of Wikitech. The live site can be found at

Incidents/2017-01-24 WikibaseClient-InterwikiSorting

From Wikitech-static
< Incidents
Revision as of 17:45, 8 April 2022 by imported>Krinkle (Krinkle moved page Incident documentation/2017-01-24 WikibaseClient-InterwikiSorting to Incidents/2017-01-24 WikibaseClient-InterwikiSorting)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search


Due to an automatic switch in WikibaseClient adding configuration for the InterwikiSorting extension caused Wikibase to start using it in production.

This wouldn't have been an issue, except WikibaseClient only checks for one setting but uses 4.

One of these settings no longer exists in the extension and was thus not included in the config change.

Fatals on all wikis using WikibaseClient for about 3 minutes where the parser cache was missed and getParserOutput was thus called.

Although mwdebug1002 was checked, the issue was not spotted, probably due to the issue only arising on getParserOutput calls, cached output would not expose the error.