Summary:
In Core 9.1.0.0, duplicate records in the mdm notification queue are created causing a spike in the load to the system, which can eventually lead to a Core crashing.
All customers running 9.1.0.0 will be impacted with this issue.
Details
In Core 9.1.0.0, duplicate records in the mdm notification queue are created. As a result, Core queues up the same event types for a device that hasn’t checked in during the regular sync interval. This causes a spike of load on the system that has numerous devices that don’t always have connectivity to the system or if the Core has a lot of stale devices.
Resolution
This issue is resolved in Core 9.1.1.0, UPGRADE TO CORE v9.1.1.0 or CORE v9.2.0.0 ASAP!