From the stacktrace on http://stackoverflow.com/questions/19711261/hibernate-search-tries-to-guess-fieldbridges-for-unindexed-entities .
Inspecting method
org.hibernate.search.spi.SearchFactoryBuilder.initDocumentBuilders(SearchConfiguration, BuildContext, SearchMapping)
it looks like we're aggressively attempting to create a
DocumentBuilderContainedEntity
even for non-indexed and non-indexedembedded types.