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Re: Merge bug? or I am missing something...

From: Brian Gideon <briangideon_at_yahoo.com>
Date: Sat, 19 Jul 2008 07:36:14 -0700 (PDT)

On Jul 18, 12:30 pm, Eric Liprandi <eric.lipra..._at_gmail.com> wrote:
> Hi,
>
> Not sure this is a bug.
> I might not understand the whole merge tracking changes that came out
> with 1.5.
>
> Anyway...
> We have 2 branches (A and B).
> On the local machine, we update both branches to HEAD (though only 1
> matters, the target).
> We initiate the merge from A to B, for a single revision X.
> On the surface, it works great.
> The changes for revision X are correctly applied to Branch B.
> But all the sudden, we also have a slew of files that are marked as
> modified.
> Those modified files only have their property "snv:mergeinfo" changed.
> Committing all the pending changes has somehow random results.
> Committing only the files we know had change in revision X works
> always fine.
>
> Any pointers as to what is happening? are we misusing the tool?
>
> Regards,
>
> Eric.
>
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Okay, what's probably happening is Subversion is adding the
svn:mergeinfo property to files it shouldn't be. There is a known
issue that is being worked on that will correct this. It's not really
a bug, but more of a suboptimal implementation. If you rename or move
a directory or file Subversion will either copy the svn:mergeinfo
contents from the node's nearest parent containing that property and
place it on that node or it will create an empty svn:mergeinfo
property. In most cases this shouldn't be necessary because that
property can be inherited from a node's parent. It's not going to
cause any problems with the merge tracking, but will cause the
repository to grow faster than necessary. I have been running into
this a lot since I do a lot of refactoring that requires me to rename
and move files around on different branches. It also causes confusing
results in the log messages and prevents you from doing a reintegrate
branch merge.

What I have been doing to work around the issue is to manually delete
all of the unnecessary svn:mergeinfo properties. This is actually
easier than it sounds. Assuming that you always branch from the root
(trunk) of your code you should only have the property on the root
folder so what you can do is to create the property on all children of
that folder (which hopefully will be a small number) and then remove
recursively. That will wipe out the property on everything except the
root. It's a quick procedure, but you have to remember to do it
before you commit changes.

See the following article for more information about the problem.

http://blogs.open.collab.net/svn/2008/07/subversion-merg.html

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Received on 2008-07-19 17:10:51 CEST

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