Do the stars align? Multidimensional analysis of Android´s layered architecture

In this paper we mine the Android bug tracker repository and study the characteristics of the architectural layers of the Android system. We have identified the locality of the Android bugs in the architectural layers of the its infrastructure, and analysed the bug lifetime patterns in each one of them. Additionally, we mined the bug tracker reporters and classified them according to its social centrality in the Android bug tracker community. We report three interesting findings, firstly while some architectural layers have a diverse interaction of people, attracting not only non-central reporters but highly important ones, other layers are mostly captivating for peripheral actors. Second, we exposed that even the bug lifetime is similar across the architectural layers, some of them have higher bug density and differential percentages of unsolved bugs. Finally, comparing the popularity distribution between layers, we have identified one particular layer that is more important to developers and users alike.