Deleting the device from onos making continuous loop of uncaught exceptions for multi-node cluster

1. Created a tree topology and assigned to a two node onos controller.
2. Removed the switch from node2 where the swich role is STANDBY(MASTER of the switch is node1) using device-removed <deviceid uri>
3. The deivce got deleted , and not getting rediscovered as in case of Deleting the same switch from node1
But continous uncaught exception at (org.onlab.util.ItemNotFoundException) was appearing in the logs and it was continously going to infinite loop.
4. Exception is attached