Ability to query over multiple sources, such as local HDT files served from a SPARQL endpoint?

[thadguidry]

I'm particularly interested in somehow simplifying multisource querying.
Comunica has this ability: https://comunica.dev/docs/query/getting_started/setup_endpoint/#3--sparql-endpoint-over-multiple-sources
and in particular, I'd likely want to query remote IPFS/Filecoin-based HDT files that can be queried.

I think:

1. I would just need to setup and run Comunica.
2. setup and run an IPFS node that caches the HDT files locally. (Brave or Opera browser, for example)
3. Hopefully this OpenRefine SPARQL extension will be able to seamlessly communicate via the exposed Comunica SPARQL endpoint to query over my multiple local cached HDT files.

Does anyone foresee problems with some of the above before I begin this journey?