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List:       subversion-dev
Subject:    Re: Random test failures with PARALLEL
From:       "David Glasser" <glasser () davidglasser ! net>
Date:       2008-03-31 21:06:24
Message-ID: 1ea387f60803311406p5f34ff10vbd34fbd4507f6f49 () mail ! gmail ! com
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On Thu, Mar 20, 2008 at 5:22 AM, Senthil Kumaran S <senthil@collab.net> wrote:
> Lieven Govaerts wrote:
>  > Relevant extract from apache error log:
>  > [Thu Mar 20 09:56:19 2008] [error] [client 127.0.0.1] The URI does not
>  > contain the name of a repository.  [403, #190001]
>  >
>  > access.log:
>  > 127.0.0.1 - jrandom [20/Mar/2008:09:56:19 +0100] "OPTIONS
>  > /svn-test-work/repositories HTTP/1.1" 403 322 "-" "SVN/1.6.0 (dev build)
>  > neon/0.25.5"
>  >
>  > So, why is there no repository name?
>
>  I could see in all the test failures stacktrace we have this line:
>
>  <snip>
>
>    File
>  "/home/stylesen/subversion-dev/trunk/subversion/tests/cmdline/svntest/main.py",
>  line 436, in run_command_stdin
>      raise Failure
>  </snip>
>
>  which in turn gives a 403 response in apache. The doc string of
>  run_command_stdin says:
>
>  " this should not be very large, as if the program outputs more than the OS
>    is willing to buffer, this will deadlock, with both Python and
>    COMMAND waiting to write to each other for ever"
>
>  So my assumption is when the tests are run in parallel the STDIN_LINES created
>  by different processes are large and raises a failure randomly for the above
>  reason?

I'm getting this issue as well.

I'm not sure if I follow your diagnosis.  The different parallel tests
are in separate processes (the only threading is in a dispatching
process); I don't see why this would make the STDIN_LINES larger than
one process.  Plus we're clearly getting a 403 from the server.

In the past, this has been because we've mixed in authz-using tests
(which can't be run in parallel) with other tests.  I don't see that
here though.

--dave

-- 
David Glasser | glasser@davidglasser.net | http://www.davidglasser.net/

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