When pt-online-schema-change “where” Meets Galera: Understanding Chunk Auto-Resize and Flow Control

Percona Toolkit’s pt-online-schema-change (pt-osc) has long been the preferred solution for performing online schema changes with minimal downtime. Its chunk-based copy algorithm is designed to adapt dynamically to the workload, making it suitable for very large tables in production environments. However, under specific conditions, one of its... Weiterlesen