During November 2024, Satadru enhanced observability in the IBM/velox repository by integrating plan fragment logging into the TaskListener component. He implemented a new C++ callback that logs plan fragments alongside task statistics, updating the task completion flow to propagate plan fragments to listeners. This involved refactoring Task::onTaskCompletion and introducing an overload for TaskListener::onTaskCompletion to accept the plan fragment, thereby improving end-to-end visibility for plan fragments. Satadru’s work focused on callback implementation, software design, and refactoring, laying a stronger foundation for diagnostics and optimization by enabling more targeted debugging and analysis of task execution flows within Velox.