Worked on stabilizing CPU profiling tests in the pinterest/starrocks repository by enhancing the ProcProfileCollectorTest to more accurately count CPU profile files. Addressed test reliability by introducing checks for directory existence and correct file listing, which improved the accuracy of profiling metrics and reduced flakiness in continuous integration workflows. Applied a targeted bug fix using Java, leveraging test-driven development and unit testing practices to reinforce code quality and maintainability. The work focused on improving test stability rather than adding new features, demonstrating a methodical approach to problem-solving and a strong commitment to robust testing standards within the existing codebase.