Author: russblau

Description:
Queries that use list=allpages&filterlanglinks=withlanglinks take a very long time to perform, and frequently time out.

Examples: http://en.wikipedia.org/w/api.php?action=query&list=allpages&apfrom=B&apfilterlanglinks=withlanglinks

By contrast, apfilterlanglinks=withoutlanglinks or apfilterlanglinks=all perform fine.

http://en.wikipedia.org/w/api.php?action=query&list=allpages&apfrom=B&apfilterlanglinks=withoutlanglinks

http://en.wikipedia.org/w/api.php?action=query&list=allpages&apfrom=B&apfilterlanglinks=all

Version: 1.14.x
Severity: normal