Aikesheng Open Source Community
Jul 5, 2023 · Databases
Understanding MySQL Event Scheduler and Why Its Connections Cannot Be Killed During Master‑Slave Switch
This article explains the MySQL event_scheduler thread, why killing it during master‑slave failover produces an "Unknown thread id" warning in MySQL 8.0, how to manage events, and the impact of these internal daemon sessions on replication and failover processes.
Database AdministrationEvent SchedulerMaster-Slave Switch
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