Re: [PATCH v2 0/5] Fix the racy split index problem

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On Thu, Sep 27, 2018 at 03:53:24PM +0200, Ævar Arnfjörð Bjarmason wrote:
> 
> On Thu, Sep 27 2018, SZEDER Gábor wrote:
> 
> > This is the second attempt to fix the racy split index problem, which
> > causes occasional failures in several random test scripts when run
> > with 'GIT_TEST_SPLIT_INDEX=yes'.  The important details are in patches
> > 1 and 5 (corresponding to v1's 3 and 5).
> 
> Thanks. I'm running the same sorts of tests I noted in
> https://public-inbox.org/git/87va7ireuu.fsf@xxxxxxxxxxxxxxxxxxx/ on
> this. The fix Jeff had that you noted in
> https://public-inbox.org/git/20180906151439.GA8016@localhost/ is now in
> "master".
> 
> I take it your
> https://github.com/szeder/git/commits/racy-split-index-fix is the same
> as this submission?

Yes.

> Anyway, I'm testing that cherry-picked on top of the
> latest master.
> 
> Unfortunate that we couldn't get the isolated test you made in
> https://public-inbox.org/git/20180907034942.GA10370@localhost/

Nah, that's not an isolated test case, that's only a somewhat
narrowed-down, but rather reliable reproduction recipe while I still
had no idea what was going on :)

The _real_ isolated test is the last test in t1701, that's what it
eventually boiled down to.

> but I
> don't see how it could be added without some very liberal
> getenv("GIT_TEST_blahblah"), so it's probably best to not add it,
> particularly with the C rewrite of git-stash in-flight.
> 
> I'll report back when I have enough test data to say how these patches
> affect the intermittent test failures under GIT_TEST_SPLIT_INDEX=yes.



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