Li plugin: [Clustering]operation DS is not getting cleared in clustering stock odl even after disconnecting the ovs OF switch

in clustering Stock odl testing, I observed that the operational DS is not getting cleared even after disconnecting the ovs OF switch.

I created 5 # node cluster test setup like c1,c2,c3,c4 and c5. and c1 is leader and others are follower. I have connected a ovs OF switch to C1 and checked the config and operational DS. Found that the connected OF switch details in operational DS. After sometime, I disconnected the OVS OF switch and confirmed that no OVS OF switch has connected with any of the cluster nodes. Then checked again the operational DS of either leader or follower , I am able to get the OVS OF switch information .

Step to recreate the issue:

1. create 5 # node cluster
2. connect a OVS OF switch to any one of cluster node
3. check the operational DS of the node using REST
4. wait for 5 mins and disconnect the switch from the cluster
5. again check the operational DS of the node using REST, still it is showing the ovs OF switch details. But the Port status of 6633 and 6653 are as follows;

root@mininet-vm:/home/anpu# netstat -an | grep 6633
tcp6 0 0 :::6633 :::* LISTEN

root@mininet-vm:/home/anpu# netstat -an | grep 6653
tcp6 0 0 :::6653 :::* LISTEN

The same status shown in all the cluster node.

Herewith I am enclosing the operational DS log when no active OVS OF switch connection