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Re: [PATCH 4/4] fast-import: only store commit objects

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
May 7, 2013, 06:47 UTC
Message-ID
<5188A36A.8000408@alum.mit.edu>
In-Reply-To
<CAMP44s3vGKv-Z6sx0sjAPH7_U1+AiJjFHjKz8ke+EUqW-u2Y=A@mail.gmail.com>
On 05/07/2013 06:47 AM, Felipe Contreras wrote:
Show 20 quoted lines
> On Mon, May 6, 2013 at 10:27 PM, Michael Haggerty <mhagger@alum.mit.edu> wrote:
> 
>> You conjectured earlier that nobody uses blob marks, and I provided a
>> counterexample.  Then you proposed a workaround that would require
>> changes to the cvs2git documentation, and I even explained how your
>> proposed workaround is not as flexible as the status quo.
> 
> cvs2git does *not* need blob marks, it does not need marks at all.
> 
> The use-case that you mentioned has nothing to do with cvs2git, in
> fact. I can be described as this:
> 
> % ./generate-blobs > blobs
> % git fast-import --export-marks=marks < blobs
> % ./generate-commits > commits
> % git fast-import --import-marks=marks < commits
> 
> In this example 'generate-commits' has no notion of marks at all, and
> 'git fast-import' doesn't need marks to process both blobs and
> commits.

The "generate-blobs" program generates a mark for each blob and remembers the marks in a database. The "generate-commits" program reads the marks from the database and incorporates them in the definitions of the commits that it writes to its output. So yes, the program pair *does* rely on marks for blobs being exported correctly.

I've tired of this discussion. I am quite sure that your change will not be accepted, so I see no need to participate further. Please do not interpret my silence as agreement with your quarrelsome arguments.

Michael
-- 
Michael Haggerty
mhagger@alum.mit.edu
http://softwareswirl.blogspot.com/
Previous: Felipe ContrerasNext: Felipe Contreras
Message 29 of 38 in “fast-export: speed improvements”
  1. 0/4 fast-export: speed improvementsFelipe Contreras, May 3, 2013
  2. 1/4 fast-{import,export}: use get_sha1_hex() directlyFelipe Contreras, May 3, 2013
  3. Junio C HamanoMay 3, 2013
  4. 2/4 fast-export: improve speed by skipping blobsFelipe Contreras, May 3, 2013
  5. Junio C HamanoMay 3, 2013
  6. 3/4 fast-export: don't parse all the commitsFelipe Contreras, May 3, 2013
  7. Junio C HamanoMay 3, 2013
  8. Felipe ContrerasMay 4, 2013
  9. Junio C HamanoMay 4, 2013
  10. 4/4 fast-import: only store commit objectsFelipe Contreras, May 3, 2013
  11. Thomas RastMay 3, 2013
  12. Felipe ContrerasMay 3, 2013
  13. Michael HaggertyMay 6, 2013
  14. Thomas RastMay 6, 2013
  15. Michael HaggertyMay 6, 2013
  16. Junio C HamanoMay 6, 2013
  17. Felipe ContrerasMay 6, 2013
  18. Felipe ContrerasMay 6, 2013
  19. Michael HaggertyMay 7, 2013
  20. Johannes SchindelinMay 7, 2013
  21. Felipe ContrerasMay 7, 2013
  22. Michael HaggertyMay 7, 2013
  23. Felipe ContrerasMay 7, 2013
  24. Felipe ContrerasMay 6, 2013
  25. Michael HaggertyMay 7, 2013
  26. Johannes SchindelinMay 7, 2013
  27. Felipe ContrerasMay 7, 2013
  28. Felipe ContrerasMay 7, 2013
  29. Michael HaggertyMay 7, 2013
  30. Felipe ContrerasMay 7, 2013
  31. Junio C HamanoMay 7, 2013
  32. Michael HaggertyMay 7, 2013
  33. Johannes SchindelinMay 6, 2013
  34. Felipe ContrerasMay 6, 2013
  35. Junio C HamanoMay 3, 2013
  36. Felipe ContrerasMay 3, 2013
  37. Junio C HamanoMay 3, 2013
  38. Felipe ContrerasMay 4, 2013

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