Worked on enhancing command-line reliability in both the apache/hbase and HubSpot/hbase repositories by implementing robust input validation for the compaction_switch command. Focused on backend development using Ruby, the work introduced strict checks to ensure only 'true' or 'false' values are accepted, with case-insensitive handling and explicit error raising for invalid inputs. Comprehensive automated tests were added to verify correct behavior and prevent regressions, establishing consistent validation logic across both codebases. This approach improved the reliability and maintainability of CLI operations, reduced misconfiguration risks, and streamlined support by enforcing clear input expectations through test-driven development and careful error handling.