RESTEasy Reactive using worker thread instead of IO thread

[tadenday]

Hello,

I've encountered an issue while working with RESTEasy Reactive. I've created a simple endpoint as shown below:

@POST
@Path("/messages")
public Uni<Dto> create(@Valid Dto dto) {
    return service.createOrUpdate(Entity.from(dto));
}

When testing with small data, the task works well on the IO thread (vert.x-eventloop-thread-1). However, when testing with larger data, the task immediately switches to the worker thread (executor-thread-1).

I've attempted to force the task to be executed on the IO thread using the @nonblocking annotation, but it hasn't resolved the issue.

I appreciate any assistance provided.

Best regards.

[mkouba]

When testing with small data, the task works well on the IO thread (vert.x-eventloop-thread-1). However, when testing with larger data, the task immediately switches to the worker thread (executor-thread-1).

Hm, I believe that this should not happen. What exactly does service.createOrUpdate() do? Also what version of Quarkus do you use?