Worked on the apache/hbase repository to enhance backend configurability and build reliability. Delivered a feature allowing table property changes without requiring region reopens when coprocessors remain unchanged, using a reliable comparator for coprocessor descriptors to prevent modification errors. Addressed build issues by removing duplicate Maven source plugin configurations, resolving jar creation conflicts in hbase-diagnostics and hbase-http modules. Updated Velocity templates and build configurations to ensure compatibility with Velocity 2.x, modernizing template processing. The work involved Java, Maven, and XML configuration, focusing on runtime flexibility, stable artifact packaging, and smoother release processes within the HBase backend development environment.