RHDS 11 is returning entries from separate root suffixes.

Issue

After creating separate root suffixes ( one having as ending DN the DN of the shorter suffix - eg: ou=customers,dc=example,dc=com and dc=example,dc=com ), search operations behave differently depending of the RHDS version:

• RHDS 10: a search on the shorter suffix returns matching entries only from the related backend.
• RHDS 11: a search on the shorter suffix returns also matching entries from other backend(s).

For instance:

• There are two defined suffixes:

$ dsconf -D "cn=Directory Manager" ldaps://localhost:636 backend suffix list
Enter password for cn=Directory Manager on ldaps://localhost:636:
dc=example,dc=com (exampledb)
ou=customers,dc=example,dc=com (customersdb)
$

• There is no sub-suffix:

$ grep -ic parent-suffix /etc/dirsrv/slapd-<INSTANCE>/dse.ldif
0
$

• A search is returning data from the other root suffix:

$ ldapsearch -xLLL -H ldaps://localhost:636 -D "cn=Directory Manager" -W -b "dc=example,dc=com" uid=demo_user 1.1
Enter LDAP Password:
dn: uid=demo_user,ou=people,dc=example,dc=com

dn: uid=demo_user,ou=people,ou=customers,dc=example,dc=com
$