I don't know what the cover art may have been, nor the publication date. This was described to me by someone, and I want to find it and read it. No idea on the author, but here's the description I was given:
There’s famous email from a programmer in the 70s or 80s who wrote a short sci-fi story, a dystopic tale, about a distant future where the data of humanity was so large that they needed a planet to host it all on, and then they had so many acronyms they had to make another catalog to define them all which took up another planet… or something along those lines.