Hey, We have a bit of an issue in the EventletEvent class in oslo.utils. We had to blacklist the versions that had the race fix because it turned out that it reintroduced the double-set bug. So the current version is subtly broken, and we released the oslo.service change that started to use it (which is how we found the double-set bug). There are actually two patches proposed right now related to this.[1][2] The first simply fixes the bug, the second optimizes it so we aren't doing unnecessary event replacement. What I would like to do is merge the first patch, release the library with just that, then merge the second patch and release again. That way if we're wrong about the optimization patch being correct (I don't think we are, but this is concurrency, so...) we have the safer fix available in a release. The reason I'm emailing instead of just doing this is that I'm going to be unavailable after today until the 11th, and it would be nice to get at least the first release done before then. I can maybe get that done today, but in case I don't I wanted to get this on record. Thanks. -Ben 1: https://review.openstack.org/#/c/632758 2: https://review.openstack.org/#/c/633053