Flows do not exists after OVS restarted on Controller Node and Compute Node.

Steps to reproduce in a 3 node cluster:

Used stable/bo.

Used ODL 3 node (feature: odl-ovsdb-openstack)

2 Openstack nodes, 1 control and 1 compute node

1.create a network1.

Below are steps of restart OVS on Control Node.

2.Stop OVS with the following command.
　systemctl stop openvswitch

3.Check ODL log to confirm that processing of OVS stop are finished.

4.Start OVS with the following command.
　systemctl start openvswitch

Now checked the flows, but flows are not existed.
Out of 3 attempts we can able to reproduce one time.

Used following distribution when we faced this issue

https://nexus.opendaylight.org/content/groups/public/org/opendaylight/integration/distribution-karaf/0.5.0-Boron/distribution-karaf-0.5.0-Boron.tar.gz