During February 2026, Sandchaschte implemented robust fatal error handling and state management for JDBC sinks in the apache/pulsar repository, addressing the need for reliable termination when unrecoverable errors occur during flush operations. By introducing a new state management system in Java, Sandchaschte ensured that sink instances would not remain in a stale or dangling state, thereby improving data integrity and operational safety. These enhancements were also ported to the datastax/pulsar fork, aligning behavior across repositories. The work demonstrated effective backend development and unit testing skills, with a focus on cross-repo consistency and lifecycle management for distributed data pipeline components.