You can run the bin/create-sample program from this C implementation here: https://github.com/dannyvankooten/1brc https://github.com/dannyvankooten/1brc It’s j

You can run the bin/create-sample program from this C implementation here: https://github.com/dannyvankooten/1brc https://github.com/dannyvankooten/1brc It’s just the city names + averages from the official repository using a normal distribution to generate 1B random rows.