Worked on the apache/ignite repository to enhance system observability by implementing query thread pool metrics logging. Developed a feature in Java that records detailed log entries for query thread pool activity, enabling teams to monitor performance and respond to incidents more efficiently. Updated the existing test suite to verify the accuracy and completeness of the new log output, ensuring robust coverage and reliability. Focused on Java development, logging, and metrics, the work provided actionable insights into system behavior and supported proactive performance tuning. The contribution addressed a key need for improved monitoring without introducing new bugs, reflecting careful and targeted engineering.