Grouper Developers Forum

[Tom Barton <>]

Release Candidate 2 had a bug in the XMLExporter class which prevented 
users from converting a Grouper v1.0 database into a Grouper v1.1 
database. This issue has been addressed in Release Candidate 3, 
available now on the wiki at 
<https://wiki.internet2.edu/confluence/display/GrouperWG/Grouper+Software+Download>.

Note that Grouper v1.1 works with a Grouper v1.0 database just as well 
as Grouper v1.0 does. However, we found that by reordering the columns 
in one key table (the grouper_memberships table) significant performance 
gains occurred across several types of operations. We also reorded the 
columns in a second table (grouper_members) to explore for additional 
gains, but found the change only marginal. But the database schema 
proper - the tables, their columns, indices, and relationships - did not 
change at all between the v1.0 and v1.1 releases, which is why Grouper 
v1.1 works with a v1.0 database. But to reap that performance gain, the 
columns in an existing Grouper database must be reordered. A wiki topic 
has been created to explain how 
(<https://wiki.internet2.edu/confluence/display/GrouperWG/Database+Conversion+v1.0+-+v1.1>).

Tom