Reviewed: https://review.openstack.org/222173 Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=691d497885cf4d8b39bb6ddb384b7c027bb52f95 Submitter: Jenkins Branch: master
commit 691d497885cf4d8b39bb6ddb384b7c027bb52f95 Author: Boris Bobrov <[email protected]> Date: Thu Sep 3 16:05:55 2015 +0500 Move region configuration to a critical section Cache initialization performed on the request handling after Apache wsgi module start raises exception region.RegionAlreadyConfigured on race condition in multithreaded mode. Change-Id: I65f85aedd5b087499b889540417b9502e050ce7c Closes-bug: 1482271 ** Changed in: keystone Status: In Progress => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Identity (keystone). https://bugs.launchpad.net/bugs/1482271 Title: Race condition in multithreaded Apache/WSGI setup Status in OpenStack Identity (keystone): Fix Released Bug description: When configured as an Apache WSGI module a race condition is possible during keystone cache initialization: https://github.com/openstack/keystone/blob/a597a86b854215835a4d54885daeb161d7b0efb8/keystone/common/kvs/core.py#L240 The operation raises exception region.RegionAlreadyConfigured. This is a result of the race condition involving global 'application' variable being initialized several times (1 per thread). application is required to be global according to Paste Deploy documentation: http://pythonpaste.org/deploy/ Apache modwsgi documentation suggests protecting global objects with thread locks: http://code.google.com/p/modwsgi/wiki/ProcessesAndThreading#Building_A_Portable_Application To manage notifications about this bug go to: https://bugs.launchpad.net/keystone/+bug/1482271/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
