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Betr.: Re: running 2 update commands on one working copy at the same time

From: Jan Keirse <jan.keirse_at_tvh.be>
Date: Tue, 27 Sep 2011 11:05:49 +0200

Stephen Butler <sbutler_at_elego.de> schreef op 27/09/2011 10:58:26:

>
> On Sep 27, 2011, at 9:20 , Jan
> wrote:
>
> > Hello,
> >
> > I've got 2 batch processes, one compile CHUI files and another
compiling
> > WIN32 files. They use the same working copy and update the working
copy
> > before starting.
> > I wonder if this is safe: if the 2 update commands run at the same
time,
> > will this cause issues? So far it appears to work just fine, but I'd
> > rather be sure than sorry.
> >
> >
> > ps.: Both compilers run on the same machine and just invoke svn.exe
> > --non-interactive --accept theirs-full --depth infinity update
> > c:\workingcopyname, so there won't be a problem with incompatible
clients,
> > the client is the same. I just wonder if I could have problems with a
> > locked working copy or something like that. The working copy is only
used
> > for compiling, there are never any changes in the working copy. SVN
Server
> > & Client: 1.6.17, OS WIN32, server = Apache.
>
>
> Subversion operations that modify the working copy, such as update, use
> a Subversion-internal "administrative" locking to ensure that the
operations
> don't collide.

Great.
 
> It's possible that build process B runs an update while build proces A
is
> already compiling. Then the effective source code of build A might
> include files from different revisions, which is difficult to reproduce.

I am aware of this risk but it won't cause problems in our setup: If this
happened a second compile would be triggered automatically.
I was only worried the working copy could get corrupted causing the update
to fail, but if subversion handles this I should be safe.
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Received on 2011-09-27 11:04:59 CEST

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