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Tue 10 Nov 2020 17:09 - 17:10 at Virtual room 1 - Configuration

A large percentage of real-world software configuration issues, such as misconfigurations, involve multiple interdependent configuration parameters. However, existing techniques and tools either do not consider dependencies among configuration parameters— termed configuration dependencies—or rely on one or two dependency types and code patterns as input. Without rigorous understanding of configuration dependencies, it is hard to deal with many resulting configuration issues.

This paper presents our study of software configuration dependencies in 16 widely-used cloud and datacenter systems, including dependencies within and across software components. To understand types of configuration dependencies, we conduct an exhaustive search of descriptions in structured configuration metadata and unstructured user manuals. We find and manually analyze 521 configuration dependencies. We define five types of configuration dependencies and identify their common code patterns. We report on consequences of not satisfying these dependencies and current software engineering practices for handling the consequences.

We mechanize the knowledge gained from our study in a tool, cDep, which detects configuration dependencies. cDep automatically discovers five types of configuration dependencies from bytecode using static program analysis. We apply cDep to the eight Java and Scala software systems in our study. cDep finds 87.9% (275/313) of the related subset of dependencies from our study. cDep also finds 448 previously undocumented dependencies, with a 6.0% average false positive rate. Overall, our results show that configuration dependencies are more prevalent and diverse than previously reported and should henceforth be considered a first-class issue in software configuration engineering.

Tue 10 Nov

Displayed time zone: (UTC) Coordinated Universal Time change

17:00 - 17:30
17:00
2m
Talk
Configuration Smells in Continuous Delivery Pipelines: A Linter and a Six-Month Study on GitLab
Research Papers
Carmine Vassallo University of Zurich, Switzerland, Sebastian Proksch Delft University of Technology, Netherlands, Anna Jancso University of Zurich, Switzerland, Harald Gall University of Zurich, Switzerland, Massimiliano Di Penta University of Sannio, Italy
DOI Pre-print
17:03
1m
Talk
Dimensions of Software Configuration: On the Configuration Context in Modern Software Development
Research Papers
Norbert Siegmund Leipzig University, Nicolai Ruckel Bauhaus-University Weimar, Janet Siegmund TU Chemnitz, Germany
DOI
17:05
1m
Talk
Global Cost/Quality Management across Multiple Applications
Research Papers
Liu Liu Rutgers University, USA, Sibren Isaacman Loyola University Maryland, USA, Uli Kremer Rutgers University, USA
DOI
17:07
1m
Talk
Inferring and Securing Software Configurations using Automated Reasoning
Visions and Reflections
Paul Gazzillo University of Central Florida
DOI
17:09
1m
Talk
Understanding and Discovering Software Configuration Dependencies in Cloud and Datacenter Systems
Research Papers
Qingrong Chen University of Illinois at Urbana-Champaign, USA, Teng Wang National University of Defense Technology, China, Owolabi Legunsen Cornell University, Shanshan Li National University of Defense Technology, China, Tianyin Xu University of Illinois at Urbana-Champaign, USA
DOI
17:11
19m
Talk
Conversations on Configuration
Paper Presentations
Carmine Vassallo University of Zurich, Switzerland, Liu Liu Rutgers University, Nicolai Ruckel Bauhaus-University Weimar, Paul Gazzillo University of Central Florida, Qingrong Chen University of Illinois at Urbana-Champaign, USA, M: Sarah Nadi University of Alberta