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Evolution of technical debt: An exploratory study
Department of Computer Science and Engineering, Chalmers, University of Gothenburg, Gothenburg, Sweden.
Department of Informatics, University of Oslo, Norway.
Department of Computer Science and Engineering, Chalmers, University of Gothenburg, Gothenburg, Sweden.
Department of Computer Science and Engineering, Chalmers, University of Gothenburg, Gothenburg, Sweden.
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2019 (English)In: CEUR Workshop Proceedings, CEUR-WS , 2019, p. 87-102Conference paper, Published paper (Refereed)
Abstract [en]

Context: Technical debt is known to impact maintainability of software. As source code files grow in size, maintainability becomes more challenging. Therefore, it is expected that the density of technical debt in larger files would be reduced for the sake of maintainability. Objective: This exploratory study investigates whether a newly introduced metric ‘technical debt density trend’ helps to better understand and explain the evolution of technical debt. The ‘technical debt density trend’ metric is the slope of the line of two successive ‘technical debt density’ measures corresponding to the ‘lines of code’ values of two consecutive revisions of a source code file. Method: This study has used 11,822 commits or revisions of 4,013 Java source files from 21 open source projects. For the technical debt measure, SonarQube tool is used with 138 code smells. Results: This study finds that ‘technical debt density trend’ metric has interesting characteristics that make it particularly attractive to understand the pattern of accrual and repayment of technical debt by breaking down a technical debt measure into multiple components, e.g., ‘technical debt density’ can be broken down into two components showing mean density corresponding to revisions that accrue technical debt and mean density corresponding to revisions that repay technical debt. The use of ‘technical debt density trend’ metric helps us understand the evolution of technical debt with greater insights. 

Place, publisher, year, edition, pages
CEUR-WS , 2019. p. 87-102
Series
CEUR Workshop Proceedings, ISSN 1613-0073 ; 2476
Keywords [en]
Code debt, Code smells, Slope of technical debt density, Software metrics, Technical debt, Technical debt density, Technical debt density trend, Codes (symbols), Maintainability, Odors, Code smell, Exploratory studies, Java source files, Multiple components, Open source projects, Technical debts, Open source software
National Category
Software Engineering
Identifiers
URN: urn:nbn:se:his:diva-17859Scopus ID: 2-s2.0-85074108547OAI: oai:DiVA.org:his-17859DiVA, id: diva2:1368627
Conference
2019 Joint Conference of the International Workshop on Software Measurement and the International Conference on Software Process and Product Measurement, IWSM-Mensura 2019; Haarlem; Netherlands; 7 October 2019 through 9 October 2019
Available from: 2019-11-07 Created: 2019-11-07 Last updated: 2019-11-19Bibliographically approved

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CiteExportLink to record
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