Would quite like to use the new

output_required=False

asset keyword that came in 1.0.4 but it appears to only be applicable to assets defined with the

@asset

decorator. How do I apply it to a graph backed asset?

You can define an output for a graph backed asset with

AssetOut

(I think it’s not in the docs, but works) and set the flag

is_required=False

https://github.com/dagster-io/dagster/blob/master/python_modules/dagster/dagster/_core/definitions/asset_out.py#L17

Yeah ok I see. That needs to go on the underlying

op

right?

I think it can go in the graph as well, but don’t really recall since I ultimately went with a different pattern for my use case.

Cool - will have a play with it and see what works. Thanks! (also, if you could/are willing to share a very brief description of the alternate path you chose I'd appreciate it a lot)

For my use case I needed a graph-backed multi-asset and that doesn’t allow me to

yield

the output, since it has to be dynamic, I ultimately just used a

@multi_asset

ahh ok gotcha - thanks!

Take my last message with a grain of salt though, maybe I didn’t play around with it enough to find the solution (it’s also a couple weeks back). There’s this suggested approach https://github.com/dagster-io/dagster/discussions/9358 but it doesn’t exactly scale too well if I’m processing something like 10 assets from a single email

Yeah honestly I'm struggling a bit getting all the pieces lined up with assets - lots of possible combos