> On Nov 24, 2014, at 9:23 AM, Adam Young <[email protected]> wrote: > > > > For pieces such as the Nova compute that talk almost exclusively on the > Queue, we should work to remove Monkey patching and use a clear programming > model. If we can do that within the context of Eventlet, great. If we need > to replace Eventlet with a different model, it will be painful, but should be > done. What is most important is that we avoid doing hacks like we've had to > do with calls to Memcached and monkeypatching threading.
Nova compute does a lot of relational database access and I’ve yet to see an explicit-async-compatible DBAPI other than psycopg2’s and Twisted abdbapi. Twisted adbapi appears just to throw regular DBAPIs into a thread pool in any case (see http://twistedmatrix.com/trac/browser/trunk/twisted/enterprise/adbapi.py), so given that awkwardness and lack of real async, if eventlet is dropped it would be best to use a thread pool for database-related methods directly. _______________________________________________ OpenStack-dev mailing list [email protected] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
