1 files changed, 7 insertions, 0 deletions
diff --git a/sql/event_scheduler.cc b/sql/event_scheduler.cc
index b03b51f1134..d3a031fd8f8 100644
--- a/sql/event_scheduler.cc
+++ b/sql/event_scheduler.cc
@@ -399,6 +399,13 @@ Event_scheduler::start()
   new_thd->system_thread= SYSTEM_THREAD_EVENT_SCHEDULER;
   new_thd->command= COM_DAEMON;
 
+  /*
+    We should run the event scheduler thread under the super-user privileges.
+    In particular, this is needed to be able to lock the mysql.event table
+    for writing when the server is running in the read-only mode.
+  */
+  new_thd->security_ctx->master_access |= SUPER_ACL;
+
   scheduler_param_value=
     (struct scheduler_param *)my_malloc(sizeof(struct scheduler_param), MYF(0));
   scheduler_param_value->thd= new_thd;