What  type of events that trigger pipelines 

Triggers are another way that you can execute a pipeline run. Triggers represent a unit of processing that determines when a pipeline execution needs to be kicked off.

 Currently, the service supports three types of triggers:

 

Schedule trigger: A trigger that invokes a pipeline on a wall-clock schedule.

 

Tumbling window trigger: A trigger that operates on a periodic interval, while also retaining state.

 

Event-based trigger: A trigger that responds to an event.

 

Pipelines and triggers have a many-to-many relationship (except for the tumbling window trigger). 

Multiple triggers can kick off a single pipeline, or a single trigger can kick off multiple pipelines. 

In the following trigger definition, 

the pipelines property refers to a list of pipelines that are triggered by the particular trigger. The property definition includes values for the pipeline parameters.