"Internal unindexed search" and "Partially Unindexed Filter" errors in Directory Server for Schema Compat Plugin

Issue

• In the Directory Server error logs, there are numerous errors indicating partial unindexed searches from the Schema Compat plugin, i.e:

  ==> /var/log/dirsrv/slapd-EXAMPLE-LOCAL/errors <==
  [09/Sep/2024:19:09:58.641705931 +0000] - ERR - log_result - Internal unindexed search: source (cn=Schema Compatibility,cn=plugins,cn=config) search base="cn=sudorules,cn=sudo,dc=example,dc=lab" filter="(&(&(objectclass=ipaSudoRule)(!(compatVisible=FALSE))(!(ipaEnabledFlag=FALSE)))(|(memberUser=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(memberHost=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(memberAllowCmd=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(memberDenyCmd=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(ipaSudoRunAsGroup=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(ipaSudoRunAs=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)))" etime=0.046817859 nentries=10  notes=U details="Partially Unindexed Filter"
  [09/Sep/2024:19:09:59.871761878 +0000] - ERR - log_result - Internal unindexed search: source (cn=Schema Compatibility,cn=plugins,cn=config) search base="cn=sudorules,cn=sudo,dc=example,dc=lab" filter="(&(&(objectclass=ipaSudoRule)(!(compatVisible=FALSE))(!(ipaEnabledFlag=FALSE)))(|(memberUser=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(memberHost=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(memberAllowCmd=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(memberDenyCmd=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(ipaSudoRunAsGroup=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)(ipaSudoRunAs=cn=member-x,cn=hostgroups,cn=accounts,dc=example,dc=lab)))" etime=0.047745098 nentries=10  notes=U details="Partially Unindexed Filter"