All posts by João Gramacho

About João Gramacho

João Gramacho is a Software Developer for the MySQL Replication Core team at Oracle. Before joining Oracle, he worked for more than ten years with IT infrastructure support (servers hardware, operating systems, networks, management and security) and did a PhD in high-performance computing.

“Look: I/O thread is waiting for disk space!”

MySQL 8.0.1 introduced a work with replication threads mutexes in order to improve performance. In MySQL 8.0.2 the same work was extended, focusing in usability, and revamped how replication deals with disk-full conditions, improving the responsiveness of both monitoring commands and administrative commands such as KILL, as well as making status messages much more precise and helpful.…