Re: concurrent access to multiple local git repos is error prone

I am on Ubuntu, I will run the checks that you mentioned. I assume
it's operator error for now though. Like I said, it was just `git
status` that was sometimes failing to send any stdout, presumably when
access to a certain git repo was concurrent, but possibly due to
concurrent access across multiple repos.

Also, as an aside, this seems to be a bug, but probably a known bug:

$ git diff-index  HEAD; echo $?

:100755 100755 60e5d683c1eb3e61381b1a8ec2db822b94b9faec
0000000000000000000000000000000000000000 M      cli/npp_check_merge.sh
:100644 100644 35a453544de41e2227ab0afab31a396d299139e9
0000000000000000000000000000000000000000 M      src/find-projects.ts
:100644 100644 c1ee7bc18e6604cbf0d16653e9366109d6ac2ec9
0000000000000000000000000000000000000000 M      src/tables.ts
:100644 100644 29d9674fbb48f223f3434179d666b2aa991ad05a
0000000000000000000000000000000000000000 M
src/vcs-helpers/git-helpers.ts
0

$ git diff-index --quiet HEAD; echo $?
1

different exit codes depending on whether --quiet was used. In this
case, the exit code should be consistent.
The bug is with the `git diff-index` command, as you can see.

-alex

On Sun, Aug 5, 2018 at 1:11 AM, Jonathan Nieder [off-list ref] wrote:

Alexander Mills wrote:

quoted

Yeah in this case what appeared to be happening is that if `git status` was
called concurrently, frequently I wouldnt get any stdout..

Thanks for reporting.  A few questions:

What platform are you on?  What version of Git are you running?  What
is the output of "git version --build-options"?

What is the exit status from these "git status" invocations that
didn't write output?  What options are you passing to "git status"?
Are there any other interesting symptoms?

Is this part of a larger tool or script?  Are there other operations
going on (e.g. something sending signals to these git processes)?

Does the repository pass "git fsck"?  Any other symptoms or hints that
could help in tracking this down?

Can you paste a transcript of the commands or script you ran and what
output it produced?  Is this something I should be able to reproduce?

Thanks and hope that helps,
Jonathan

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Alexander D. Mills
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