If the global index appears to be growing too large, you can reload from the backend directory servers.
To override the configuration of the
prime-index-sourceproperty, run the reload-index tool with the --fromDS subcommand.
You can do this on a one-off basis if the global index appears to be growing too large.
$ bin/reload-index \ --bindPassword password \ --baseDN "dc=example,dc=com" \ --fromDS