Author: mgrover
Description:
I'm trying to make sure that our latest code is out on beta labs by checking the Special Version Page but I'm getting an error.
Version: unspecified
Severity: normal
URL: https://en.wikipedia.beta.wmflabs.org/wiki/Special:Version
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Resolved | Krenair | T55335 Error trying to access Special:Version on beta labs, as it tries to get the HEAD commit date for each extension | |||
| Resolved | Krinkle | T53360 Special:Version with exts in git is too slow, needs caching or using something other than git show | |||
| Resolved | None | T40783 Add git commit date for core and extensions to Special:Version |
Special:Version would try to get the HEAD commit date for each of the extensions which takes roughly 34 seconds. There is most probably a lower timeout on varnish side which prevents it from successfully retrieving the page :(
Confirming:
Request: GET http://en.wikipedia.beta.wmflabs.org/wiki/Special:Version, from 89.176.96.40 via deployment-cache-text1 frontend ([10.4.1.133]:80), Varnish XID 2001176226
Forwarded for: 89.176.96.40
Error: 503, Service Unavailable at Mon, 02 Sep 2013 12:16:59 GMT
Come on guys, what we have here is practically a DoS vector. Can somebody do something about it?
This is related to some MediaWiki configuration variable, isn't it? Which one, exactly?
Change 95878 had a related patch set uploaded by Alex Monk:
Cache VCS commit id/date text on Special:Version
I thought the dates were removed, but it must be some configuration only: still relevant.