Worked on the apache/cassandra repository to improve the reliability of distributed system testing by addressing a shutdown race condition in the test harness. The solution involved configuring the distributed tests to use setIsShutdownUnsafeForTests(true), which eliminated flaky shutdown-related failures and stabilized continuous integration results. This change led to more consistent distributed test outcomes and accelerated feedback cycles for release readiness. The work demonstrated strong skills in Java, distributed systems, and testing, with a focus on debugging complex test environments and enhancing CI stability. The contribution did not add new features but provided depth in maintaining robust, reliable test infrastructure for Cassandra.