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Understanding broadcast based peer review on open source software projects

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2 Author(s)
Rigby, P.C. ; Software Eng. Group, Univ. of Victoria, Victoria, BC, Canada ; Storey, M.

Software peer review has proven to be a successful technique in open source software (OSS) development. In contrast to industry, where reviews are typically assigned to specific individuals, changes are broadcast to hundreds of potentially interested stakeholders. Despite concerns that reviews may be ignored, or that discussions will deadlock because too many uninformed stakeholders are involved, we find that this approach works well in practice. In this paper, we describe an empirical study to investigate the mechanisms and behaviours that developers use to find code changes they are competent to review. We also explore how stakeholders interact with one another during the review process. We manually examine hundreds of reviews across five high profile OSS projects. Our findings provide insights into the simple, community-wide techniques that developers use to effectively manage large quantities of reviews. The themes that emerge from our study are enriched and validated by interviewing long-serving core developers.

Published in:

Software Engineering (ICSE), 2011 33rd International Conference on

Date of Conference:

21-28 May 2011