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https://issues.apache.org/jira/browse/SVN-4668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15809480#comment-15809480
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Daniel Shahaf (äñ§€¥£¢) commented on SVN-4668:
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What would you have us change? If we changed the order to make 1.9.6
emit headers in the same order as 1.8.x, then it would emit headers in
an order different to 1.9.5. One of the two upgrade paths has to have
this order difference.
It would have been better not to change the order at all, of course, but
that ship has sailed.
For what it's worth, I agree that emitting bitwise identical dumps is
a good behaviour to have; however, you should never assume that
different versions produce equal dumpfiles given equal source data — for
example, because optimisations to to the binary deltas generator could
also result in bitwise-different dumps that are semantically equal.
All that said, we do not hold discussions in the bug tracker. When
replying please add the [email protected] mailing list to the
CC and remove jira@. Thanks.
> svnserve dump format order has changed
> --------------------------------------
>
> Key: SVN-4668
> URL: https://issues.apache.org/jira/browse/SVN-4668
> Project: Subversion
> Issue Type: Bug
> Components: svnserve
> Affects Versions: 1.9.3
> Environment: Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-53-generic x86_64)
> Reporter: Luke Perkins
> Priority: Critical
> Attachments: SvnserveDumpIssue_20170107.jpg
>
>
> The format of the svnserve dump file has changed somewhere between version
> 1.8 and 1.9.3 ( version 1.9.3 (r1718519)). I routinely perform svnserve dump
> operations of my repositories and compare them against archived copies of
> dump files to be used for emergency recovery operations.
> It appears the content order difference is benign other than "diff"
> operations fail. I have file illustrating the difference.
> The version information for svnserve dump is:
> svnserve, version 1.9.3 (r1718519)
> compiled Mar 14 2016, 07:39:01 on x86_64-pc-linux-gnu
> Copyright (C) 2015 The Apache Software Foundation.
> This software consists of contributions made by many people;
> see the NOTICE file for more information.
> Subversion is open source software, see http://subversion.apache.org/
> The following repository back-end (FS) modules are available:
> * fs_fs : Module for working with a plain file (FSFS) repository.
> * fs_x : Module for working with an experimental (FSX) repository.
> * fs_base : Module for working with a Berkeley DB repository.
> Cyrus SASL authentication is available.
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