During June 2025, contributed to the apache/ignite repository by developing a transactional safety feature targeting unordered collections. This work introduced runtime checks and enhanced logging to alert users when unordered maps and sets are used within explicit transactions, addressing potential distributed deadlocks and improving overall system stability. The implementation leveraged Java and focused on backend development within distributed systems, emphasizing server-side validation and diagnostics. Additionally, addressed thin client multi-key operation warnings in server logs, reducing unnecessary log noise and aiding troubleshooting. These changes improved transaction reliability, observability, and provided clearer guidance for developers working with distributed transactions in Ignite.