July 9th, 2024

Using Git bisect to find bugs in MySQL code base

Troubleshooting MySQL database crashes or regressions can be complex. Using git bisect helps pinpoint the commit introducing a bug, aiding developers in efficiently identifying and addressing regressions for improved bug resolution.

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Using Git bisect to find bugs in MySQL code base

Troubleshooting database crashes or regressions in MySQL can be challenging. One approach is to use git bisect, a tool that helps identify the commit introducing a bug by narrowing down the range between a known "good" and "bad" commit. By executing reproducible test cases, git bisect can pinpoint the commit where the issue started. This process aids in improving bug reports and understanding code behavior changes. In a demonstration focusing on MySQL regression from version 8.0.37 to 8.0.38, a reproducible test case using the MySQL test framework is showcased. By automating the process with git bisect run, developers can efficiently identify the commit causing the regression, facilitating targeted debugging efforts and potential fixes. Understanding the specific commit responsible for a change in behavior can enhance bug resolution and aid in implementing temporary solutions until a permanent fix is available.

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By @btilly - 3 months
The power of git bisect is the best argument that I've seen for using git rebase. When you rebase, you get a much cleaner commit history. Which makes it much easier for git bisect to work and find the correct commit.

I still lean against git rebase because I've suffered from the disasters that it can lead to. But I certainly appreciate the power of git bisect.