Title
The Emergence of Software Diversity in Maven Central.
Abstract
Maven artifacts are immutable: an artifact that is uploaded on Maven Central cannot be removed nor modified. The only way for developers to upgrade their library is to release a new version. Consequently, Maven Central accumulates all the versions of all the libraries that are published there, and applications that declare a dependency towards a library can pick any version. In this work, we hypothesize that the immutability of Maven artifacts and the ability to choose any version naturally support the emergence of software diversity within Maven Central. We analyze 1,487,956 artifacts that represent all the versions of 73,653 libraries. We observe that more than 30% of libraries have multiple versions that are actively used by latest artifacts. In the case of popular libraries, more than 50% of their versions are used. We also observe that more than 17% of libraries have several versions that are significantly more used than the other versions. Our results indicate that the immutability of artifacts in Maven Central does support a sustained level of diversity among versions of libraries in the repository.
Year
Venue
Keywords
2019
Proceedings of the 16th International Conference on Mining Software Repositories
evolution, library versions, maven central, open-source software, software diversity
Field
DocType
Volume
World Wide Web,Computer science,Upload,Immutability,Upgrade,Theoretical computer science,Software diversity
Journal
abs/1903.05394
Citations 
PageRank 
References 
0
0.34
30
Authors
5
Name
Order
Citations
PageRank
César Soto-Valero100.34
Amine Benelallam2747.02
Nicolas Harrand3192.66
Olivier Barais472461.99
Benoit Baudry54510.60