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Re: Berkeley DB 6.0 license change to AGPLv3

Scott Kitterman wrote:
On Saturday, July 06, 2013 01:52:59 PM Howard Chu wrote:
Florian Weimer wrote:
* Howard Chu:
LMDB doesn't need dirty tricks to look good. (And at only 6KLOCs of
source, there's nowhere to hide any tricks anyway.)

Okay, I found a snag: the 511 bytes limit on the key size.  Berkeley
DB's disk format does not impose a limit on key or value size (at
least for B-trees).  For some applications, this will introduce new
error conditions, and working around this limitation requires
reworking the database schema.

True. There's a bit of leeway here, we can raise the key size to ~1/2 the
page size if necessary. But ultimately, we don't support keys that don't
fit in a single page and there are no plans to add such support. If we see
enough apps that can't live with this, we may revisit the situation.

I did go back and look at the plans for mdb integration in Postfix, since it's
my MTA of choice.  It does seem that there are some barriers to adoption:


Are there any plans to address these issues?

Yes http://www.openldap.org/lists/openldap-devel/201303/msg00002.html
we've been working with Wietse Venema and plan to have this addressed in our upcoming 0.9.7 LMDB release.

  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/

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