On Wed, May 18, 2022 at 9:47 PM Robert Haas <robertmh...@gmail.com> wrote: > > I do understand that Zstandard is a good compression algorithm, and if > we had an extensibility mechanism here where one of the four possible > bit patterns then indicates that the next byte (or two or four) stores > the real algorithm type, then what about adding Zstandard that way > instead of consuming one of our four primary bit patterns? That way > we'd have this option for people who want it, but we'd have more > options for the future instead of fewer. > > i.e. something like: > > 00 = PGLZ > 01 = LZ4 > 10 = reserved for future emergencies > 11 = extended header with additional type byte (1 of 256 possible > values reserved for Zstandard) >
+1 for such an extensible mechanism if we decide to go with Zstandard compression algorithm. To decide that won't it make sense to see some numbers as Michael already has a patch for the new algorithm? -- With Regards, Amit Kapila.
