[MDSAL-197] Switch connection bounce results in wrong ownership change in Singleton

Blocks — Fri, 9 Mar 2018 18:00:17 +0000

In Carbon, sometimes, when switch is disconnected and reconnected with very small delay between these actions, it's role is incorrectly set (should be MASTER, but is SLAVE).

Reproduction steps (from Luis from bug https://bugs.opendaylight.org/show_bug.cgi?id=6672):
1) start mininet 1 switch (s1) pointing to any of the cluster instances (e.g. 10.13.11.207)
2) Run the following script in the mininet system to bounce connection quickly:

#!/bin/bash
sudo ovs-vsctl del-controller s1
sleep 0.2
sudo ovs-vsctl set-controller s1 "tcp:192.168.0.101"

In local cluster test, I did step 2 twice. First time, role MASTER was successfully set, but second time, role was SLAVE, what is incorrect.

I attached logs from my local testing from node 10.13.11.207.

OpenDaylight JIRA

[MDSAL-197] Switch connection bounce results in wrong ownership change in Singleton