[GitHub] [arrow] jvanstraten edited a comment on pull request #12446: ARROW-15700: [C++] Compilation error on Ubuntu 18.04

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jvanstraten edited a comment on pull request #12446:
URL: https://github.com/apache/arrow/pull/12446#issuecomment-1042871284


   That'd basically be starting over from scratch, when DuckDB already has a working extension for Substrait merged in to their main branch, there's lots of work already in progress for Ibis, there's obviously the Arrow consumer that would have to be completely rewritten, etc. I wouldn't call it "just a draft" anymore.
   
   What we could consider doing if this continues to be a problem is switch to an alternative protobuf library, like [upb](https://github.com/protocolbuffers/upb), but that'd probably also be a rewrite on our end. I suppose we could even fork protobuf to just add namespacing support (if no one else has done so already). I can't imagine that being very difficult, but it's obviously maintenance work (assuming Google doesn't want to merge it in). But maybe that's a bit naive of me.
   
   ETA: oh, it looks like upb isn't intended to be used within C(++) directly. So maybe not the best choice.


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