ordered pull consumer is not working

[asnimansari]

Observed behaviour

When I try to create an ordered pull consumer as per the documentation https://docs.rs/async-nats/latest/async_nats/jetstream/consumer/type.OrderedPullConsumer.html

Code I used

         .create_consumer(
                
                jetstream::consumer::pull::OrderedConfig {
                    name: Some("consumer".to_string()),
                    ..Default::default()
                },
            )

I received the following error

Failed to create consumer: Error { kind: JetStream(Error { code: 400, err_code: ErrorCode(10084), description: Some("consumer in pull mode requires ack policy") }), source: None }

Expected behavior

Should build and work

Server and client version

Nats server 2.10.3

Host environment

No response

Steps to reproduce

No response

[Jarema]

Thanks for filling the issue!

This is a server error reported on older version (If I recall correctlu <2.9).

I see you reported using nats server 2.10.3, but it seems that the server that is meta group leader is not that version.

Can you elaborate a little on your topology?
(basic cluster info, leaf nodes, etc)

[asnimansari]

It is a basic 3 node cluster.

[Jarema]

EDIT: Realized there is one path when its possible:

Are you trying to run it againt workqueue stream?

[asnimansari]

Yes, the retention policy is WorkQueuePolicy

[Jarema]

You can't use ordered pull consumer with work queue stream, as it uses AckNone.

[Jarema]

I'm closing this issue, as this is not a bug.
I also issued a PR against the server to improve the error message.