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Brion Vibber wrote:
tstarling@svn.wikimedia.org wrote:
Revision: 34358 Author: tstarling Date: 2008-05-07 06:43:58 +0000 (Wed, 07 May 2008)
This breaks the site. Overloads the central DB. Reverted.
Detail: the s3 master (carrying centralauth DB) was stuffed with these reqs:
SELECT /* Database::safeQuery */ gu_id, lu_dbname, gu_salt, gu_password,gu_auth_token,
[sorry, cut off as I didn't do a SHOW FULL PROCESSLIST]
We were getting reports of a lot of "too many connections" errors on various wikis, mostly from people who *were* logged in but *not* with a merged account. With a merged account, or anonymous, I didn't seem to be having any problems.
It looks like something was triggering a lot of extra lookups, which perhaps aren't getting properly cached.
- -- brion vibber (brion @ wikimedia.org)