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Re: duplicate objects in packfile

From
Junio C Hamano <gitster@pobox.com>
Date
Aug 14, 2013, 18:29 UTC
Message-ID
<7v4nast9bv.fsf@alter.siamese.dyndns.org>
In-Reply-To
<20130814181718.GA7911@sigill.intra.peff.net>
Jeff King <peff@peff.net> writes:
Show 9 quoted lines
> lookup does not.  It hits an assert() that can only be triggered in the
> face of duplicate objects. For example:
>
>   $ git cat-file -t 4ea4acbcb0930ac42acc87a0d203864dec1a9697
>   commit
>
>   $ GIT_USE_LOOKUP=1 git cat-file -t 4ea4acbcb0930ac42acc87a0d203864dec1a9697
>   git: sha1-lookup.c:222: sha1_entry_pos: Assertion `lov < hiv' failed.
>   Aborted

Older versions of JGit used to put duplicate objects in a pack, and IIRC Shawn declared that a bug in the packer and fixed it, so from that point of view, I think rejecting is probably the right thing, even though I think warning and continuing is also acceptable and indeed may be better.

Previous: Jeff KingNext: Junio C Hamano
Message 2 of 37 in “duplicate objects in packfile”
  1. Jeff KingAug 14, 2013
  2. Junio C HamanoAug 14, 2013
  3. Junio C HamanoAug 14, 2013
  4. Nicolas PitreAug 14, 2013
  5. Jeff KingAug 16, 2013
  6. 0/4 duplicate objects in packfilesJeff King, Aug 21, 2013
  7. 1/4 sha1-lookup: handle duplicate keys with GIT_USE_LOOKUPJeff King, Aug 21, 2013
  8. 2/4 index-pack: optionally reject packs with duplicate objectsJeff King, Aug 21, 2013
  9. Duy NguyenAug 22, 2013
  10. Jeff KingAug 22, 2013
  11. 0/6 duplicate objects and delta cycles, oh my!Jeff King, Aug 22, 2013
  12. 1/6 test-sha1: add a binary output modeJeff King, Aug 22, 2013
  13. 2/6 sha1-lookup: handle duplicate keys with GIT_USE_LOOKUPJeff King, Aug 22, 2013
  14. Junio C HamanoAug 23, 2013
  15. Jeff KingAug 23, 2013
  16. Nicolas PitreAug 23, 2013
  17. Jeff KingAug 23, 2013
  18. 0/6 duplicate objects and delta cyclesJeff King, Aug 24, 2013
  19. 1/6 test-sha1: add a binary output modeJeff King, Aug 24, 2013
  20. 2/6 sha1-lookup: handle duplicate keys with GIT_USE_LOOKUPJeff King, Aug 24, 2013
  21. 3/6 add tests for indexing packs with delta cyclesJeff King, Aug 24, 2013
  22. 4/6 test index-pack on packs with recoverable delta cyclesJeff King, Aug 24, 2013
  23. 5/6 index-pack: optionally reject packs with duplicate objectsJeff King, Aug 24, 2013
  24. 6/6 default pack.indexDuplicates to falseJeff King, Aug 24, 2013
  25. Johannes SixtAug 23, 2013
  26. Jeff KingAug 23, 2013
  27. 3/6 add tests for indexing packs with delta cyclesJeff King, Aug 22, 2013
  28. 4/6 test index-pack on packs with recoverable delta cyclesJeff King, Aug 22, 2013
  29. 5/6 index-pack: optionally reject packs with duplicate objectsJeff King, Aug 22, 2013
  30. 6/6 default pack.indexDuplicates to falseJeff King, Aug 22, 2013
  31. Nicolas PitreAug 22, 2013
  32. 3/4 reject duplicates when indexing a packfile we createdJeff King, Aug 21, 2013
  33. 4/4 index-pack: optionally skip duplicate packfile entriesJeff King, Aug 21, 2013
  34. Junio C HamanoAug 21, 2013
  35. Jeff KingAug 22, 2013
  36. Junio C HamanoAug 21, 2013
  37. Nicolas PitreAug 14, 2013

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