If i setup LDAP integration (not delegation, full LDAP), and make some mistake in settings, synchronization service will started in any case. The database became full of invalid users, invalid groups. Millions of users and groups. This process can't be stopped. Can't be paused. It just evil.

The only one possible solution, kill Stash, go into database and disable service in table cwd_directory. Then start Stash again.

It is very annoying. Please make some dry-run mode for such «Imports», i not need dozen of users/groups in Stash Administration users/groups lists.