parallel foreign scan

I’m working on a foreign database wrapper for Kafka [1]

Now I am trying to make it parallel aware. Following 

the documentation [2]

However it seems that I can’t make it use more than a

single worker with force_parallel_mode = on.

I wonder if I need to do more than just implementing the

needed callback function to benefit from multiple workers.

Looking at create_foreignscan_path in path_nodes.c

I found that the ForeignPath seems to always set

Do I need so set these in my GetForeignPaths callback manually?

Is there anything else I need to do?

Thanks

Manuel

[1] https://github.com/adjust/kafka_fdw

[2] https://www.postgresql.org/docs/current/static/fdw-callbacks.html#FDW-CALLBACKS-PARALLEL