Refinement and resolution of just-in-time requirements in open source software and a closer look into non-functional requirements

Just-in-time (JIT) requirements are characterized as not following the traditional requirement engineering approach, instead focusing on elaboration when the implementation begins. In this experience report, which is an invited extension of a recently published work [1], we first analyze both functional and non-functional JIT requirements from three successful open source software (OSS) projects, including Firefox, Lucene, and Mylyn, to explore...