On Fri, Feb 21, 2020 at 7:40 AM Jonathan Nieder <jrnieder@xxxxxxxxx> wrote: > > This adds the reftable library, and hooks it up as a ref backend. > > As promised, here's a patch to include the reftable spec in git.git. > Please include this in the next iteration of this patch series (or if > you prefer for it to land separately, that's also fine with me). I did. > [...] > > * support SHA256 as version 2 of the format. > > I'd prefer if we error out for now when someone tries to use reftable > when the_hash_algo != sha1. That would buy a bit more time to pin > down the details of version 2 (e.g., should it only add an object > format field, or object format and oid size?). You have convinced me that we should go with the 4-byte identifier. How about setting version=2 and extending the header by 4 bytes (which hold the 4-byte identifier). The footer would also be increased in size equivalently. There are no further changes. BTW, could we document that a reftable consisting of just a footer is a valid table too? -- Han-Wen Nienhuys - Google Munich I work 80%. Don't expect answers from me on Fridays. -- Google Germany GmbH, Erika-Mann-Strasse 33, 80636 Munich Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Geschäftsführer: Paul Manicle, Halimah DeLaine Prado