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Re: Node origins cache rewrite

From: Mark Phippard <markphip_at_gmail.com>
Date: Mon, 28 Jan 2008 12:59:52 -0500

On Jan 28, 2008 12:55 PM, David Glasser <glasser_at_davidglasser.net> wrote:
> On Jan 25, 2008 12:50 PM, David Glasser <glasser_at_davidglasser.net> wrote:
> > On Jan 25, 2008 11:16 AM, David Glasser <glasser_at_davidglasser.net> wrote:
> > > On Jan 24, 2008 6:54 PM, Mark Phippard <markphip_at_gmail.com> wrote:
> > > > I see David has rewritten this to no longer use SQLite. Yay!
> > >
> > > Here's an alternative implementation. In FSFS, at commit time, new
> > > node IDs are rewritten from a temporary value like "_ab3" to a unique
> > > value by adding "ab3" to the "start_node_id" field in the current
> > > file. This makes them not only unique, but also part of an ordered
> > > sequence without gaps.
> > >
> > > Is it actually important that node IDs be ordered and gapless? We
> > > could just change new node-IDs (in format 3 repositories) to be built
> > > as "<rev>-ab3". get-node-origin-rev would be trivial on these nodes.
> > > Pre-format-3 repositories, or nodes in format 3 repositories that
> > > aren't dumped and loaded, would require the slow crawl.
> >
> > Like this. Can somebody review?
>
> New version, supporting "svnadmin recover". Barring objections, will
> commit later today.

I do not have objections, but I did ask some questions in this message
that have not been answered:

http://subversion.tigris.org/servlets/ReadMsg?list=dev&msgNo=134583

-- 
Thanks
Mark Phippard
http://markphip.blogspot.com/
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Received on 2008-01-28 19:00:05 CET

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