grapvar@gmail.com wrote:

Contrast to bdb, the "range" index records are immortal in the mdb:

• they offer many-thousand list of search candidates (in terms of mdb_search())

for particular attribute value even if all instances of this value are removed from the dit.

• "range" records survive after slapindex
• they even survive after dropping/creating an index itself

Can you show that slapindex -t doesn't remove these index records?

The only way to get rid of the "range" index records and actualize index is to create a new mdb and populate it from the ground up. This has maintainance costs.