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[grouper-users] Bad Memberships in Composite group

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  • From: Kumi Hagimoto <>
  • To:
  • Subject: [grouper-users] Bad Memberships in Composite group
  • Date: Tue, 13 Sep 2016 22:21:46 +0000 (UTC)
  • Ironport-phdr: 9a23:fPDJtx8JKKN7Y/9uRHKM819IXTAuvvDOBiVQ1KB+2ukcTK2v8tzYMVDF4r011RmSAtWdtqkP0reempujcFJDyK7JiGoFfp1IWk1NouQttCtkPvS4D1bmJuXhdS0wEZcKflZk+3amLRodQ56mNBXkiybttntKQ12/alI0dazJHdvdlcOqz+2ovoDIbh9TrDu7fb5oKhiq90PcutRFr5FlL/MS1x7I6ltBdOVTwn9vbQaQghP9oMe5859m9DhXk/U7+sFHV77mdrg1C7FUEWJ1YCgO+MT3uEybHkO07XwGXzBJyhc=


We've been getting bad memberships reported in the nightly reports since we've
created a composite group and would like to figure out the cause.

One of the groups that constitutes the composite group is a result of multiple
layers of group memberships rolled up. At the very bottom layer are groups
that define different types of users, and it seems that the membership change
from one group to another in this layer may be the cause of this bad
membership. Here's a simplified structure:

Composite Group
| \
Base Excludes
| \
userGrp1 userGrp2 ...

A user was deleted from userGrp1 and added to userGrp2 - timestamp less than a
second apart. We got the Bad Memberships reported that night, and the user
was no longer in the Composite Group but still in the "Base" group. This
happened for a few users, and all of them had a group change like this
example. We checked the logs and there has been no error reported. Has
anyone seen this sort of behavior? If so, was there a fix for it? We're
running grouper v 2.2.1.


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