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Re: Git push race condition?

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Mar 24, 2014, 21:16 UTC
Message-ID
<CACBZZX4ZEPA3sBp4-3QF6de0EWXzPkcOiqSxH3_CXV27Z=gxtw@mail.gmail.com>
In-Reply-To
<CAAyEjTN53+5B9Od9wW698wODNL3hR6Upot8-ZLwEksn3ir_zjA@mail.gmail.com>

On Mon, Mar 24, 2014 at 8:18 PM, Scott Sandler <scott.m.sandler@gmail.com> wrote:

> I run a private Git repository (using Gitlab) with about 200 users
> doing about 100 pushes per day.
Ditto but about 2x those numbers.
> error: Ref refs/heads/master is at
> 4584c1f34e07cea2df6abc8e0d407fe016017130 but expected
> 61b79b6d35b066d054fb3deab550f1c51598cf5f
> remote: error: failed to lock refs/heads/master

I also see this error once in a while. I read the code a while back and it's basically because there's two levels of locks that receive-pack tries to get, and it's possible for two pushers to get the first lock due to a race condition.

I've never seen data loss due to this though, because the inner lock is atomic.
Previous: Junio C HamanoNext: Scott Sandler
Message 6 of 17 in “Git push race condition?”
  1. Scott SandlerMar 24, 2014
  2. Matthieu MoyMar 24, 2014
  3. Scott SandlerMar 24, 2014
  4. Matthieu MoyMar 24, 2014
  5. Junio C HamanoMar 24, 2014
  6. Ævar Arnfjörð BjarmasonMar 24, 2014
  7. Scott SandlerMar 24, 2014
  8. Jeff KingMar 24, 2014
  9. Jeff KingMar 24, 2014
  10. Nasser GrainawiMar 24, 2014
  11. Scott SandlerMar 25, 2014
  12. Matthieu MoyMar 25, 2014
  13. Scott SandlerMar 25, 2014
  14. Matthieu MoyMar 25, 2014
  15. Jeff KingMar 25, 2014
  16. Scott SandlerApr 10, 2014
  17. Matthieu MoyApr 11, 2014

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