On an instance with several linked repositories the repository cache initialization may take a while:
2019-05-04 09:20:12,810 INFO [localhost-startStop-1] [CachedRepositoryDefinitionManagerImpl] Repository cache initialising... 2019-05-04 09:30:41,562 INFO [localhost-startStop-1] [CachedRepositoryDefinitionManagerImpl] Repository cache initialised in 10.48 min
And there is no log showing if the initialization is proceeding. Please add additional log similar to plan cache initialization.