https://bugs.openldap.org/show_bug.cgi?id=9378
--- Comment #15 from stefan.bruens@rwth-aachen.de --- baloo_file uses a singleton for the env, and the actual mdb_env_open is protected by a Mutex, so the env can be opened exactly once.
So I have significant doubts this trace is actually from baloo_file from an unaltered source repository. Note, baloo_file does fork a helper process, maybe thats what can be seen here?
(There was one unit test which did use the singleton and a separate instance, but thats a separate issue).