Flex:SystemTest: Active query: QueryBleve remote client returned status: 500: when adding fts node

 {

    "completed_requests": {

      "clientContextID": "query_thread_1",

      "elapsedTime": "4m7.050250354s",

      "errorCount": 1,

      "errors": [

        {

          "cause": "rpc error: code = DeadlineExceeded desc = grpc_server: Search searchInContext err: bleve: QueryBleve remote client returned status: 500 body: null",

          "code": 5000,

          "key": "Internal Error",

          "message": "n1fty: response_handler: stream.Recv, err "

        }

      ],

      "node": "172.23.120.73:8091",

      "phaseCounts": {

        "fetch": 3227691,

        "filter": 3025522,

        "ftsSearch": 3227678

      },

      "phaseOperators": {

        "authorize": 1,

        "fetch": 1,

        "filter": 1,

        "ftsSearch": 1

      },

      "phaseTimes": {

        "authorize": "32.384µs",

        "fetch": "3m52.495257396s",

        "filter": "54.626886468s",

        "ftsSearch": "30.674601103s",

        "instantiate": "30.596µs",

        "parse": "1.152385ms",

        "plan": "2.793536ms",

        "run": "4m7.046185971s"

      },

      "remoteAddr": "172.23.104.254:47726",

      "requestId": "5a0f0963-987f-4e36-9aab-94658d78cd84",

      "requestTime": "2020-06-26T09:49:13.294-07:00",

      "resultCount": 1,

      "resultSize": 64,

      "scanConsistency": "unbounded",

      "serviceTime": "4m7.050195507s",

      "state": "completed",

      "statement": "select result,AVG(rating),MIN(rating),MAX(rating) from `other-2` use index (using fts) where  rating >= 200 and rating <= 1000 and `type`=\"gideon\" group by result limit 1000\n",

      "userAgent": "couchbase-java-client/${project.version} (git: ${git.commit.id.describe}, core: ${git.commit.id.describe}) (Linux/3.10.0-1062.9.1.el7.x86_64 amd64; OpenJDK 64-Bit Server VM 1.8.0_252-b09)",

      "users": "Administrator"

    }

  }

ns_server.query.log:_time=2020-06-26T09:45:06.257-07:00 _level=INFO _msg=response_handler: n1fty[bucket2_idx1/other-2-1593189906249059071] "5a0f0963-987f-4e36-9aab-94658d78cd84" started backfill for /opt/couchbase/var/lib/couchbase/tmp/search-results24541351064986 

ns_server.query.log:_time=2020-06-26T09:49:13.233-07:00 _level=INFO _msg=response_handler: n1fty[bucket2_idx1/other-2-1593189906249059071] "5a0f0963-987f-4e36-9aab-94658d78cd84" finished backfill for /opt/couchbase/var/lib/couchbase/tmp/search-results24541351064986  

[2020-06-26T09:24:01-07:00, sequoiatools/couchbase-cli:6.5:c96a4f] server-add -c 172.23.97.74:8091 --server-add https://172.23.123.26 -u Administrator -p password --server-add-username Administrator --server-add-password password --services fts

[2020-06-26T09:24:10-07:00, sequoiatools/couchbase-cli:6.5:4188b6] rebalance -c 172.23.97.74:8091 -u Administrator -p password

[2020-06-26T09:48:54-07:00, sequoiatools/cmd:02abaf] 60

[2020-06-26T09:50:00-07:00, sequoiatools/cmd:a1104c] 900