[CONTROLLER-2010] Get Entities RPC fails after owner is killed

Sun, 14 Nov 2021 09:01:56 +0000

Get Entities RPC call returns "RPC failed" after the owner of entity is killed.

To reproduce:
1. Set up 3-node cluster
2. Install OpenFlow flow service (odl-openflowplugin-flow-services-rest)
3. Get the list of entities with get-entities RPC
4. Kill the owner: e.g. on the host of the owner, run kill -9 <CONTROLLER_PID>
5. Get the list of entities from one of the two instances still running: returns "RPC failed" with status code of 500

Example of the response of get-entities in step 2:

POST /rests/operations/odl-entity-owners:get-entities

{
    "odl-entity-owners:output": {
        "entities": [
            {
                "type": "org.opendaylight.mdsal.AsyncServiceCloseEntityType",
                "name": "ofp-topology-manager",
                "candidate-nodes": [
                    "member-1"
                ],
                "owner-node": "member-1"
            },
            {
                "type": "org.opendaylight.mdsal.ServiceEntityType",
                "name": "ofp-topology-manager",
                "candidate-nodes": [
                    "member-1",
                    "member-2",
                    "member-3"
                ],
                "owner-node": "member-1"
            }
        ]
    }
}

Response of get-entities in step 5 after killing 'member-1':

POST /rests/operations/odl-entity-owners:get-entities

{
    "errors": {
        "error": [
            {
                "error-tag": "operation-failed",
                "error-info": "<severity>error</severity>",
                "error-message": "RPC failed",
                "error-type": "rpc"
            }
        ]
    }
}

OpenDaylight JIRA

[CONTROLLER-2010] Get Entities RPC fails after owner is killed