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Re: Stale logs and upgrading to WC-NG

From: Hyrum K. Wright <hyrum_wright_at_mail.utexas.edu>
Date: Wed, 8 Apr 2009 09:56:58 -0500

On Apr 8, 2009, at 9:50 AM, Mark Phippard wrote:

> On Wed, Apr 8, 2009 at 10:47 AM, Hyrum K. Wright
> <hyrum_wright_at_mail.utexas.edu> wrote:
>> As many know, the upgrade process to move existing working copies to
>> the 1.7 format will be manual. On *any* action, the user will be
>> prompted to run 'svn cleanup' to upgrade the format. Trunk currently
>> has preliminary support for this, and we're writing a number of tests
>> in upgrade_tests.py to check different upgrade scenarios.
>>
>> The question about what to do with stale logs has been encountered.
>> It turns out that converting existing logs into wc-ng-style actions
>> is
>> a Hard thing, since the log files do not contain any semantic
>> information about the actions they perform. Instead of saying
>> "install property X for node Y", the log simply says "move file A to
>> location B", which could mean any number of things. Tracking down
>> each log action and giving it sufficient semantic meaning could
>> take a
>> *significant* amount of resources.
>>
>> Because of this difficulty, and the fact that the vast majority of
>> people upgrading their working copies are unlikely to have stale
>> logs,
>> I'd like to punt on running these logs as part of the upgrade
>> process. People would need to run 'svn cleanup' with their old
>> clients, prior to running 'svn cleanup' with the new client to
>> upgrade
>> their working copy.
>>
>> Thoughts?
>
> Can a WC-NG client at least detect this and issue an error? Basically
> telling user they have stale logs and need to first clean them up
> using an older client? Or checkout a new WC?

Yes, detecting the presence of old logs shouldn't be a problem.

-Hyrum

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Received on 2009-04-08 16:57:15 CEST

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