Peter Huang developed JVM File Descriptor Metrics for the apache/flink repository, enhancing system observability by exposing file descriptor usage within Flink. He implemented new metrics, Status.FileDescriptor.Max and Status.FileDescriptor.Open, integrating their instantiation into MetricUtils.java and ensuring reliability through comprehensive tests in MetricUtilsTest.java. Using Java and leveraging his expertise in system monitoring and metrics, Peter’s work addressed the need for better resource planning by making file descriptor consumption visible to operators. The feature was thoroughly documented in Markdown, reflecting attention to maintainability and clarity. This contribution demonstrated depth in both technical implementation and operational impact.