The Event-Wait task waits for a predefined event or a user-defined event. A predefined event is a file-watch event. When you use the Event-Wait task to wait for a predefined event, you specify an indicator file for the Integration Service to watch. The Integration Service waits for the indicator file to appear. Once the indicator file appears, the Integration Service continues running tasks after the Event-Wait task.

You can assign resources to Event-Wait tasks that wait for predefined events. You may want to assign a resource to a predefined Event-Wait task if you are running on a grid and the indicator file appears on a specific node or in a specific directory. When you assign a resource to a predefined Event-Wait task and the Integration Service is configured to check resources, the Load Balancer distributes the task to a node where the required resource is available.

You can also use the Event-Wait task to wait for a user-defined event. To use the Event-Wait task for a user-defined event, specify the name of the user-defined event in the Event-Wait task properties. The Integration Service waits for the Event-Raise task to trigger the user-defined event. Once the user-defined event is triggered, the Integration Service continues running tasks after the Event-Wait task.