Continuously mining distributed version control systems: an empirical study of how Linux uses Git

Distributed version control systems (D-VCSs —such as git and mercurial ) and their hosting services (such as Github and Bitbucket) have revolutionalized the way in which developers collaborate by allowing them to freely exchange and integrate code changes in a peer-to-peer fashion. However, this fle...

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Vydáno v:Empirical software engineering : an international journal Ročník 21; číslo 1; s. 260 - 299
Hlavní autoři: German, Daniel M., Adams, Bram, Hassan, Ahmed E.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Springer US 01.02.2016
Springer Nature B.V
Témata:
Collaboration
Compilers
Computer Science
Control systems
Developers
Divergence
Interpreters
Kernels
Linux
Mining
Programming Languages
Repositories
Software development
Software Engineering/Programming and Operating Systems
UNIX (operating system)
Version control
Windows (computer programs)
Empirical software engineering
Measuring bias
Linux
Mining software repositories
Distributed version control
Rebasing
Open source development
ISSN:1382-3256, 1573-7616
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Shrnutí:Distributed version control systems (D-VCSs —such as git and mercurial ) and their hosting services (such as Github and Bitbucket) have revolutionalized the way in which developers collaborate by allowing them to freely exchange and integrate code changes in a peer-to-peer fashion. However, this flexibility comes at a price: code changes are hard to track because of the proliferation of code repositories and because developers modify (“rebase”) and filter (“cherry-pick”) the history of these changes to streamline their integration into the repositories of other developers. As a consequence, researchers and practitioners, who typically only consider the (cleaned up) history in the official project repository, are unaware of important elements and activities in the collaborative software development process. In this paper, we present a method that continuously mines all known D-VCSs of a software project to uncover the complete development history of a project. We use this method to (1) show the divergence between the code history development in the official Linux kernel repository and the complete kernel development history, and (2) to investigate the characteristics of the ecosystem of git repositories of the Linux kernel. Finally, we discuss how continuous mining could be adopted by current D-VCS hosting services.
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ISSN:1382-3256
1573-7616
DOI:10.1007/s10664-014-9356-2