Re: [JGIT PATCH] Create a debugging tool "jgit rebuild-commitgraph"

From: Shawn O. Pearce <spearce@spearce.org>
Date: Mar 13, 2009, 14:52 UTC
Message-ID: <20090313145250.GD22920@spearce.org>
In-Reply-To: <alpine.DEB.1.00.0903131549200.6288@intel-tinevez-2-302>

Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:

Show 17 quoted lines

> On Fri, 13 Mar 2009, Shawn O. Pearce wrote:
> 
> > This is a command line tool which can be used to import only
> > the commit graph of another Git repository, to help debug a
> > topology related bug, without actually needing a clone of the
> > problematic repository.
> > 
> > Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
> > ---
> > 
> >  I used this yesterday to obtain a DAG from someone's private
> >  repository and recreate the same structure on my own system,
> >  to debug why RevWalk was busted in their case.
> 
> Heh:
> 
> http://repo.or.cz/w/git/dscho.git?a=blob;f=my-fake-history.sh;h=e108ce99a5ebd75230c3cfc56b88d9769fec8bc1;hb=master

Heh. I knew both you and Nico have written something like this in the past, but I couldn't find it.

Your script is almost what I needed. But I also needed to force GIT_COMMITTER_DATE to match the timestamp, as I suspected the commit times had something to do with the problem I was seeing.

I also whack the entire ref space to match the source repository, which mattered because I was trying to debug:

  git rev-list $insha1 --not --all

in JGit...

-- 
Shawn.