Re: openldap 2.3 recommended bdb version

[matthew sporleder <msporleder@gmail.com>]

How much of the patchet for bdb4.2 has been implemented/bypassed by bdb4.3?
I would like to get a lab going with openldap2.3/bdb4.3 if the
necessary parts of the 4.2 patchset were taking upstream by sleepycat.

On 6/23/05, Howard Chu <hyc@symas.com> wrote:
> Aaron Richton wrote:
> > > OpenLDAP 2.3 requires that you use the transactions patch to BDB
> > > 4.2.52
> >
> >  Strictly speaking, this isn't true. It's greatly beneficial to run
> >  with Degree 2 isolation, but if sites believe they have a compelling
> >  reason to not use unofficial patches, they don't have to. It's
> >  probably not in their best interest, but who are we to judge? (Until
> >  they start asking openldap-software why their disks fill...)
> >
> >  I have a feeling that the Degree 2 isolation patch is going to become
> >  a FAQ as 2.3 gets adopted. I've tried to summarize under "Which
> >  version of BerkeleyDB should I use?" in the FAQ-O-Matic; revisions
> >  encouraged. Hopefully this will eventually get to be a Google hit for
> >  "BerkeleyDB 4.2.52 library needs TXN patch!"
> 
> Thanks for writing that. I've made some updates. Not completely happy
> with the focus on "Degree 2 isolation," as that's actually an
> independent issue. Really the point is that BDB 4.2 has a bug in its
> transaction initialization sequence that is fixed in 4.3, and the patch
> we provide for 4.2 is a hack to bypass the bug in one specific use case.
> The patch is by no means a general-purpose fix, and it does not provide
> Degree 2 isolation for BDB 4.2, and OpenLDAP does not invoke BDB 4.3's
> Degree 2 isolation support. I'm not sure the details are important
> enough to spell out in the FAQ, but still thinking about it.
> 
> --
>   -- Howard Chu
>   Chief Architect, Symas Corp.       Director, Highland Sun
>   http://www.symas.com               http://highlandsun.com/hyc
>   Symas: Premier OpenSource Development and Support
>