Dear hackers, 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 pathnode->path.parallel_aware = false; pathnode->path.parallel_safe = rel->consider_parallel; pathnode->path.parallel_workers = 0; 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 <https://github.com/adjust/kafka_fdw/blob/master/src/kafka_fdw.c> [2] https://www.postgresql.org/docs/current/static/fdw-callbacks.html#FDW-CALLBACKS-PARALLEL <https://www.postgresql.org/docs/current/static/fdw-callbacks.html#FDW-CALLBACKS-PARALLEL>
