2017-12-01 08:54:11,014 | WARN | ult-dispatcher-2 | ConcurrentDOMDataBroker | 247 - org.opendaylight.controller.sal-distributed-datastore - 1.7.0.SNAPSHOT | Tx: DOM-CHAIN-21-1 Error during phase CAN_COMMIT, starting Abort OptimisticLockFailedException{message=Optimistic lock failed., errorList=[RpcError [message=Optimistic lock failed., severity=ERROR, errorType=APPLICATION, tag=resource-denied, applicationTag=null, info=null, cause=org.opendaylight.yangtools.yang.data.api.schema.tree.ConflictingModificationAppliedException: Node was deleted by other transaction.]]}

under tests bgpcep-csit-3node-periodic-bgpclustering-ha-only-*