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Re: svn commit: r965046 - in /subversion/branches/atomic-revprop: ./ BRANCH-README

From: Daniel Shahaf <danielsh_at_apache.org>
Date: Sun, 18 Jul 2010 09:51:34 +0300

Yesterday on IRC there were comments suggesting that branch commits are getting
less review. For this branch, I'd like to merge it to trunk shortly --- as
soon as the API's are implemented --- so please don't skip reviewing it only
because the work isn't happening on trunk. It will be merged to trunk soon.

Thanks.

Daniel

danielsh_at_apache.org wrote on Sat, Jul 17, 2010 at 09:52:42 -0000:
> Author: danielsh
> Date: Sat Jul 17 09:52:42 2010
> New Revision: 965046
>
> URL: http://svn.apache.org/viewvc?rev=965046&view=rev
> Log:
> Create branch for atomic revprop changing work.
>
> Added:
> subversion/branches/atomic-revprop/
> - copied from r965045, subversion/trunk/
> subversion/branches/atomic-revprop/BRANCH-README
>
> Added: subversion/branches/atomic-revprop/BRANCH-README
> URL: http://svn.apache.org/viewvc/subversion/branches/atomic-revprop/BRANCH-README?rev=965046&view=auto
> ==============================================================================
> --- subversion/branches/atomic-revprop/BRANCH-README (added)
> +++ subversion/branches/atomic-revprop/BRANCH-README Sat Jul 17 09:52:42 2010
> @@ -0,0 +1,43 @@
> +Branch to implement atomic revprop modifications in libsvn_ra. By "atomic", we
> +mean: the old value (if any) of the revprop as seen by the client modifying it
> +is the same as the old value the FS layer sees at the time it enacts the change.
> +This feature may be used to fully resolve issue #3546 (race condition in svnsync
> +locking) and to implement 'svn propedit --revprop pname pval2 --old-value=pval'.
> +
> +
> +Planned work
> +============
> +
> +* FS layer support
> + - [DONE] r955136, r955303, r955306 on trunk.
> +
> +* repos layer support
> + - extend svn_repos_fs_change_rev_prop3() to wrap svn_fs_change_rev_prop2()
> +
> +* RA layer support
> + - capability:
> + Need a new libsvn_ra-level capability. (because atomicity can't be
> + achieved with older servers, and because of planned protocol extensions)
> + - ra_local
> + Trivial.
> + - ra_svn
> + Add a 'change-rev-prop2' verb.
> + - ra_dav
> + Extend PROPPATCH syntax to provide the old value: add a <S:oldvalue/>
> + tag inside the <${propname}> tag.
> + TODO: where to document this protocol extension?
> + - unit test
> + (details?)
> +
> +* svnsync:
> + - use the new RA API to resolve the race condition in locking.
> +
> +
> +Potential work
> +==============
> +
> +* repos layer hooks interface
> + - pass the old value to pre-revprop-change
> +
> +* svn propedit --revprop --old-value
> + (Not planned currently.)
>
>
Received on 2010-07-18 13:39:39 CEST

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