The Rise and Fall of a Central Contributor: Dynamics of Social Organization and Performance in the Gentoo Community
Marcelo Serrano Zanetti, Ingo Scholtes, Claudio Juan Tessone, Frank, Schweitzer

TL;DR
This study analyzes the evolution of social structure and performance in the Gentoo open source community over ten years, highlighting how a central contributor's rise and sudden departure impacted collaboration and bug resolution.
Contribution
It provides a detailed quantitative and qualitative analysis of social organization dynamics and their effects on community performance in an open source project.
Findings
Centralization increased over time before a key contributor left.
The departure of the central contributor significantly disrupted collaboration.
Community performance in bug handling was affected by social structure changes.
Abstract
Social organization and division of labor crucially influence the performance of collaborative software engineering efforts. In this paper, we provide a quantitative analysis of the relation between social organization and performance in Gentoo, an Open Source community developing a Linux distribution. We study the structure and dynamics of collaborations as recorded in the project's bug tracking system over a period of ten years. We identify a period of increasing centralization after which most interactions in the community were mediated by a single central contributor. In this period of maximum centralization, the central contributor unexpectedly left the project, thus posing a significant challenge for the community. We quantify how the rise, the activity as well as the subsequent sudden dropout of this central contributor affected both the social organization and the bug handling…
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Taxonomy
TopicsOpen Source Software Innovations · Software Engineering Research · Software System Performance and Reliability
