Internal Error is raised on executing cbas query when one of the CBAS node is down

Explain select count(*) from (select ar.airportname, al.name as airlinename, ht.name as hotelname, ld.name as landmark from `travel-sample`.inventory.airport ar, `travel-sample`.inventory.airline al, `travel-sample`.inventory.hotel ht, `travel-sample`.inventory.landmark ld where ar.country = al.country and ar.city = ht.city and ht.city = ld.city) as x;

{

    "requestID": "68791750-ad97-4925-8856-54ee9fc9b4d4",

    "clientContextID": "null",

    "errors": [{ 

        "code": 25000,        "msg": "Internal error"    } 

    ],

    "status": "fatal",

    "metrics": {

        "elapsedTime": "338.77644ms",

        "executionTime": "337.309503ms",

        "resultCount": 0,

        "resultSize": 0,

        "processedObjects": 0,

        "errorCount": 1

    }

}