21 people are the primary owner of at least one file in javapathfinder/jpf-core, and Nastaran Shafiei owns the most: 1,071 files, or 92% of the codebase. The truck factor is 1: that is how few people would have to leave before the majority of owned files lose their owner. 993 files have exactly one contributor, and 2 modules are dominated by a single person.