[Issue 9888] When using cn=config replication, schema updates can corrupt the index database(s)

https://bugs.openldap.org/show_bug.cgi?id=9888

--- Comment #10 from Howard Chu hyc@openldap.org --- I'll note that the "notify" field of the ConfigTable existed for the purpose of allowing subsystems to register handlers to be notified when a config item they cared about was changed. Such a handler could have been used by back-mdb to refresh itself whenever an attribute definition was updated.

But so far nothing ever implemented these notify handlers, and that field was deleted from the config table in https://git.openldap.org/openldap/openldap/-/commit/0c3b8a35249942dc58f0746d...

We could resurrect it and define how it should be used, now that we have an actual use case for it.