cube-js/cube · error

Does not work for standalone mode yet

Error message

Does not work for standalone mode yet

What it means

The standalone-mode TransportService implementation stubs load_stream; it is not implemented because standalone CubeSQL cannot serve load requests without an attached Cube deployment. Calling it unconditionally panics with 'Does not work for standalone mode yet'.

Source

Thrown at rust/cubesql/cubesql/src/transport/service.rs:413

        };
        let response =
            cube_api::load_v1(&self.get_client_config_for_ctx(ctx), Some(request)).await?;

        convert_transport_response(response, schema, member_fields)
    }

    async fn load_stream(
        &self,
        _span_id: Option<Arc<SpanId>>,
        _query: TransportLoadRequestQuery,
        _sql_query: Option<SqlQuery>,
        _ctx: AuthContextRef,
        _meta_fields: LoadRequestMeta,
        _schema: SchemaRef,
        _member_fields: Vec<MemberField>,
        _throw_continue_wait: bool,
    ) -> Result<CubeStreamReceiver, CubeError> {
        panic!("Does not work for standalone mode yet");
    }

    async fn can_switch_user_for_session(
        &self,
        _ctx: AuthContextRef,
        _to_user: String,
    ) -> Result<bool, CubeError> {
        panic!("Does not work for standalone mode yet");
    }

    async fn log_load_state(
        &self,
        span_id: Option<Arc<SpanId>>,
        ctx: AuthContextRef,
        meta_fields: LoadRequestMeta,
        event: String,
        properties: serde_json::Value,
    ) -> Result<(), CubeError> {

View on GitHub (pinned to 7d981676b3)

Solutions

1. Run CubeSQL in the mode connected to a Cube backend (meta transport) rather than standalone
2. Configure the transport service implementation that actually implements load_stream
3. Do not send load/query traffic to the standalone-mode service; use it only for supported paths

Example fix

// before
# standalone run
./cubesql standalone --port 15432
// after
CUBESQL_CUBE_URL=http://cube:4000 CUBESQL_CUBE_TOKEN=<token> ./cubesql

// detect standalone mode before sending load traffic
fn is_standalone_transport(svc: &dyn TransportService) -> bool {
    svc.mode() == TransportMode::Standalone
}
if is_standalone_transport(&service) {
    return Err("load requests unsupported in standalone mode".into());
}

When it happens

Trigger: Issuing a load/query request through the transport (e.g. via the meta transport / SQL interface) against a CubeSQL instance running in standalone mode where load_stream was never wired to a real backend.

Common situations: Running the standalone binary instead of the meta-transport-connected service; experiments with direct load paths before configuring the Cube backend; missing transport wiring at startup.

Related errors

• This query doesnt have a plan, because it already has values
• Should be rewritten with UtcTimestamp function
• CreateExternalTable is not supported
• Explain is not supported
• Analyze is not supported

AI-assisted analysis of cube-js/cube@7d981676b3 (2026-09-02). Data as JSON: /api/errors/34c03e04176e8ea0. Report an issue: GitHub.