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From Daniel Shahaf <danie...@elego.de>
Subject Re: Interesting mergeinfo corruption bug
Date Tue, 14 Aug 2012 20:24:19 GMT
Chris J Smith wrote on Tue, Aug 14, 2012 at 16:04:22 +0100:
> Hi,
> 
> I've encountered a rather interesting merging bug. We are using the following stack:
> 
> Client side: TSVN 1.7.7 on Windows 7 x64
> Server side: Apache 2.0.27, Subversion 1.7.5 on Windows 2008 Server R2 behind an IIS
7.5 ARR proxy.
> 
> The issue is as follows (with false names of course :-):
> 
> 1. We have trunk and two branches running (ba, bb). Merges have been done from each branch.
> 
> 2. bob merges a revision 12 from ba into trunk. This causes the mergeinfo property to
be set on trunk to:
> 
> /svn/project/ba:10,11,12 #(adding the 12).

Not 10-12 ? 

> /svn/project/bb:8,9,13
> 
> 3. bill comes along and immediately merges revision 14 from bb into trunk. This causes
the merge info to set on the root to:
> 
> /svn/project/ba:10,11 #(removing the 12?!?!?)
> /svn/project/bb:8,9,13,14 #(adding the 14)
> 
> This unexpectedly removes rev 12 from the mergeinfo for a branch which is not being merged
against. Inevitably this means that rev 12 now shows up as eligible again.
> 

Can you provide 'svn log -q -v -r 0:12' output of a repository that
shows the problem?  I can't look into it myself but I think it would be
helpful.

> We've been playing whack a mole with this for a couple of weeks now. The problem is entirely
intermittent and there appears to be no way of reliably isolating it (I've tried for days
now).
> 
> There is the possibility of human error here either on my understanding or at this end
but it's shown up on several people's workstations now.
> 
> Does anyone know why this occurs or can anyone help us?
> 
> Best Regards,
> 
> Chris Smith
> 
> 
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