In an empirical study of six Apache projects, developers fixed familiar bugs more quickly but were also more likely to introduce future bugs.

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Location PART 1 - TONS OF PUNKS, ONE BIG JERK CHAPTER 2: NO MOAT IN BLOAT Chesterton’s Fence

"In an empirical study of six Apache projects, developers fixed familiar bugs more quickly but were also more likely to introduce future bugs."

The study examined more than 9,000 confirmed bugs and found higher familiarity associated with faster fixes but worse effectiveness measured by future bugs.

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Source title Examining the effects of developer familiarity on bug fixing

Source authors Chuanqi Wang, Yanhui Li, Lin Chen, Wen-Chin Huang, Yuming Zhou, Baowen Xu

Source year 2020

Confidence high

Importance high