I was wondering if onyx has a null output plugin? One that does everything an output needs to do but does not write to anything?

@chrisn: It doesn't, no. But it would be trivial to write. Implement two multimethods write-batch and seal-resource, which simply return empty map.

See: https://github.com/onyx-platform/onyx/blob/master/src/onyx/plugin/core_async.clj#L82-90

OK. It would be useful to us and I will do that, thanks.

@chrisn: If you want to make a repo with only that, I'd be happy to move that into the GitHub organization so others could use it too. I recall wanting the same sort of thing when I used Cascading.

But really, the solution to this is to allow leaf tasks in the workflow to be functions, and not require leaves to be outputs.

@robert-stuttaford: Did you manage to hop over your problem, or still stuck?