I’m going to try to not lose my cool here, but I’m extremely upset by this.
In December, oslo apparently removed the code for ‘use_tpool’ which allows you to run DB calls in Threads because it was ‘eventlet specific’. I noticed this when a review was posted to nova to add the option within nova itself: https://review.openstack.org/#/c/59760/ I objected to this and asked (more demanded) for this to be added back into oslo. It was not. What I did not realize when I was reviewing this nova patch, was that nova had already synced oslo’s change. And now we’ve released Icehouse with a conf option missing that existed in Havana. Whatever projects were using oslo’s DB API code has had this option disappear (unless an alternative was merged). Maybe it’s only nova.. I don’t know. Some sort of process broke down here. nova uses oslo. And oslo removed something nova uses without deprecating or merging an alternative into nova first. How I believe this should have worked: 1) All projects using oslo’s DB API code should have merged an alternative first. 2) Remove code from oslo. 3) Then sync oslo. What do we do now? I guess we’ll have to back port the removed code into nova. I don’t know about other projects. NOTE: Very few people are probably using this, because it doesn’t work without a patched eventlet. However, Rackspace happens to be one that does. And anyone waiting on a new eventlet to be released such that they could use this with Icehouse is currently out of luck. - Chris
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