Transaction rolled back while creating HA router

[John Schwarz]

The stacktrace can be found here: http://paste.openstack.org/show/539052/

This was discovered while running the create_and_delete_router rally test with a high (~10) concurrency number.

I encountered this on stable/mitaka so it's interesting to see if this reproduces on master.

[LIU Yulong (dragon889)]

I've encountered that trace since Mar 1:
http://paste.openstack.org/show/488732/

which I've discussed with Jonh here:
https://review.openstack.org/#/c/284400/

[John Schwarz (jschwarz)]

Liu, it is the same exact trace and error. I didn't look all that deeply into the exception but it does turn out I had a patch to solve it!

I'll restore it later on today. Thanks! :)

[John Schwarz (jschwarz)]

The proposed fix for this issue is https://review.openstack.org/#/c/284400/

[OpenStack Infra (hudson-openstack)]

Change abandoned by John Schwarz (<email address hidden>) on branch: master
Review: https://review.openstack.org/284400
Reason: Not needed at this time.

[John Schwarz (jschwarz)]

This should have been mitigated by https://review.openstack.org/#/c/364278/10/neutron/scheduler/l3_agent_scheduler.py@207 so I'm closing this.