Worked on stabilizing the hot standby coordinator behavior in the apache/cloudberry repository, focusing on backend reliability and crash prevention. Addressed a critical issue by implementing a null-safe check for host entries within the getCdbComponentInfo() function, effectively preventing SIGSEGV crashes during hot standby operations. This solution improved fault tolerance by ensuring that host and primary lookups handle null values safely, thereby enhancing uptime and stability for production environments. The work leveraged C programming skills and database management expertise, emphasizing defensive programming practices to harden edge cases in component information gathering without impacting normal operation or system performance.