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-source property,
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