15 people are the primary owner of at least one file in darshan-dev57/jpf-core, and Nastaran Shafiei owns the most: 1,068 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. 991 files have exactly one contributor, and 1 module is dominated by a single person.