Configure Discovery to use Event Framework

Configure Discovery to process jobs using the Event Framework method, which enables you to manage discovery throttling effectively and prioritize tasks based on their importance in the queue.

始める前に

Confirm the following:

• Discovery Admin Workspace is using version 1.9.0 or later.
• ServiceNow AI Platform is using version XP9, YP4, or later than YP4.

Role required: discovery_admin

このタスクについて

When not using the Event Framework method, Discovery creates a one-time Schedule Item [sys_trigger] record for each External Communication Channel (ECC) queue sensor or pattern input record. After the task is processed, the system scheduler deletes the sys_trigger. This approach introduces additional overhead and can lead to significant database churn, while offering limited control over how sensors are processed.

The Event Framework reduces database churn by cycling through multiple event tables over time. Instead of deleting old records one by one, it clears out entire tables when they’re no longer needed and reuses them. This approach is much more efficient and helps keep the system running smoothly.

手順

1. Navigate to All > System Properties > All Properties.
2. In the System Properties [sys_properties] table, select the discovery.use.event.processing property.
3. Set the Value field to true.
4. Select Update.

タスクの結果

When an input record is added to the ECC Queue, a business rule is triggered, which fires an event. The system processes these events at regular intervals with a default priority of 100.

注:

To update a job priority, configure the com.glide.queue.discovery.sensors.processing_jobs.priority and com.glide.queue.discovery.cloud.sensors.processing_jobs.priority system properties. For more information, see Configure the job priority of background workers for Event Framework.

• Optimizing Discovery load for Event Framework
  You can optimize Discovery properties to adjust throughput and enhance safety when pinning jobs.