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[grouper-dev] Re: [grouper-users] Grouper v1.6.0 released

Chronological Thread 
  • From: Jim Fox <>
  • To: Tom Barton <>
  • Cc: "" <>, Grouper Dev <>
  • Subject: [grouper-dev] Re: [grouper-users] Grouper v1.6.0 released
  • Date: Mon, 28 Jun 2010 08:54:29 -0700 (PDT)


Thanks for the new release.

Our Grouper group registry is not yet live, but will be soon.
It will replace the production system sometime this summer.
I'd like to upgrade to 1.6 before that rather than afterward.

The new "flattened memberships" table concerns me for a couple
of reasons. First, it requires the change log be enabled, which we
don't do. Second, it appears to contain a record for each effective
member of each group. Correct me if I'm wrong there.

We already have over two million records in the 'direct membership'
table, grouper_memberships. We have many large groups (over 100K
members) that are themselves members of many other groups. I can
see the flattened memberships table easily reaching 10 to 20 million
records -- and to what point? Most of the activity of the registry
deals with direct membership, not effective membership.

So my question is: What is the consequence of running without the
change log, ignoring the flattened memberships table altogether?
Are there any core functions of grouper that are going to depend
on this table?



On Mon, 28 Jun 2010, Tom Barton wrote:

Date: Mon, 28 Jun 2010 08:01:28 -0700
From: Tom Barton

Grouper Dev
Subject: [grouper-users] Grouper v1.6.0 released

I am very pleased to announce the release of Grouper v1.6.0. This
release expands Grouper's ability to integrate with or provision to a
wide variety of external technologies. It also includes substantial
enhancements to Grouper's access management capabilities and dozens of
fixes and improvements over the previous release, v1.5.3.

To browse what's in there, to download the new release, and for upgrade
instructions, please visit

On behalf of the grouper development team

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