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Re: [Issue 1585] Deltified dumps for archival and schema conversion

From: Branko Čibej <brane_at_xbc.nu>
Date: 2004-06-22 00:21:14 CEST

Mikhail Terekhov wrote:

> Branko C(ibej wrote:
>
>> As for using deltas in the dumps -- "svnadmin load" won't simply
>> store those back into the repository. It'll recreate the current
>> fulltext and apply that. The deltas are for space, not time efficiency.
>
> You lost me here. Do you mean that "svnadmin load" first recreates
> full text from delta and
> then does exactly the same as in the case with full text dump (i.e.
> calculate delta again)?

You must remember that a) a dumpfile can be loaded into an existing,
non-empty repository, and b) the delta relationships in the repository
are quite a bit more complicated than the ones in the dump file. Take a
look at http://svn.collab.net/repos/svn-xml/trunk/notes/skip-deltas
which describes how we currently use deltas in the repository. Obviously
the dump file format must be independent of these details.

-- Brane

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Received on Tue Jun 22 00:21:45 2004

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