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Re: Git commit generation numbers

From
Jeff King <peff@peff.net>
Date
Jul 15, 2011, 20:07 UTC
Message-ID
<20110715200713.GA969@sigill.intra.peff.net>
In-Reply-To
<20110715194807.GA356@sigill.intra.peff.net>
On Fri, Jul 15, 2011 at 03:48:07PM -0400, Jeff King wrote:
Show 15 quoted lines
> OK, so let's say we add generation headers to each commit. What happens
> next? Are we going to convert algorithms that use timestamps to use
> commit generations? How are we going to handle performance issues when
> dealing with older parts of history that don't have generations?
> 
> Again, those are serious questions that need answered. I respect that
> you think the lack of a generation header is a design decision that
> should be corrected. As I said before, I'm not 100% sure I agree, but
> nor do I completely disagree (and I think it largely boils down to a
> philosophical distinction, which I think you will agree should take a
> backseat to real, practical concerns). But it's not 2005, and we have a
> ton of history without generation numbers. So adding them now is only
> one piece of the puzzle.
> 
> What's your solution for the rest of it?

I just read some of your later emails to others in the thread. It seems like your answer is "assume the timestamp-based limiting is good enough for old history".

I'm OK with that. It obviously falls down in a few specific situations, but certainly has not been an unbearable problem for the past 5 years.

-Peff
Previous: Jeff KingNext: Linus Torvalds
Message 31 of 47 in “Git commit generation numbers”
  1. Linus TorvaldsJul 14, 2011
  2. Jeff KingJul 14, 2011
  3. Linus TorvaldsJul 14, 2011
  4. Linus TorvaldsJul 14, 2011
  5. Jeff KingJul 14, 2011
  6. Ted Ts'oJul 14, 2011
  7. Linus TorvaldsJul 14, 2011
  8. Jeff KingJul 14, 2011
  9. Ted Ts'oJul 14, 2011
  10. Jeff KingJul 14, 2011
  11. Linus TorvaldsJul 14, 2011
  12. Jeff KingJul 14, 2011
  13. Linus TorvaldsJul 14, 2011
  14. Jeff KingJul 14, 2011
  15. Linus TorvaldsJul 15, 2011
  16. Geert BoschJul 15, 2011
  17. Jeff KingJul 15, 2011
  18. Linus TorvaldsJul 15, 2011
  19. Shawn PearceJul 15, 2011
  20. Linus TorvaldsJul 15, 2011
  21. Ted Ts'oJul 15, 2011
  22. Linus TorvaldsJul 15, 2011
  23. Christian CouderJul 16, 2011
  24. Jeff KingJul 18, 2011
  25. Christian CouderJul 19, 2011
  26. Jeff KingJul 19, 2011
  27. Christian CouderJul 21, 2011
  28. Tony LuckJul 15, 2011
  29. Linus TorvaldsJul 15, 2011
  30. Jeff KingJul 15, 2011
  31. Jeff KingJul 15, 2011
  32. Linus TorvaldsJul 15, 2011
  33. Jeff KingJul 15, 2011
  34. Linus TorvaldsJul 15, 2011
  35. Linus TorvaldsJul 15, 2011
  36. Linus TorvaldsJul 15, 2011
  37. Jeff KingJul 16, 2011
  38. Jeff KingJul 16, 2011
  39. Jakub NarebskiJul 15, 2011
  40. Long, MartinJul 15, 2011
  41. Long, MartinJul 15, 2011
  42. Drew NorthupJul 15, 2011
  43. Linus TorvaldsJul 14, 2011
  44. Jakub NarebskiJul 14, 2011
  45. Junio C HamanoJul 14, 2011
  46. Jeff KingJul 14, 2011
  47. Junio C HamanoJul 14, 2011

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