Operating System: All
Platform: All

This bug is happening when creating a transport zone for different DPNs (dpn by dpn) very quickly (in this case Amit used a script). The end result should be a mesh of tunnels between all DPNs, but due to some race condition in genius some tunnels aren't created.

I wrote an email describing this bug to someone in the community, it contains more information:

"We are experiencing a bug when creating a transport zone with a few DPNs (one after the other), the bug is that a tunnel mesh should be created between all DPNs, but some tunnels are not created (different tunnels every time).

It is related to the new “auto transport zone creation” feature: https://git.opendaylight.org/gerrit/#/c/49093/

I have found the bug to happen due to a use of cache in the ItmUtils.getTunnelMeshInfo method. The problem is that the cache is updated by another listener and if the transport zone is updated very quickly then the ItmTepAddWorker doesn’t find the other DPNs in the cache when building tunnels for the other DPNs. The bug doesn’t happen if I comment out the cache code."

Apparently this patch fixes the problem:

https://git.opendaylight.org/gerrit/#/c/50067/

I just cherry-picked it over the auto-tunnels patch and tested.