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Pigeon

Pigeon is a task used to trigger remote tasks, acquire logs or status by calling remote WebSocket service. It is DolphinScheduler uses a remote WebSocket service to call tasks.

Create

Drag from the toolbar to the canvas to create a new Pigeon task.

Parameter

  • Node name: The node name in a workflow definition is unique.
  • Run flag: Identifies whether this node schedules normally, if it does not need to execute, select the prohibition execution.
  • Descriptive information: Describe the function of the node.
  • Task priority: When the number of worker threads is insufficient, execute in the order of priority from high to low, and tasks with the same priority will execute in a first-in first-out order.
  • Worker grouping: Assign tasks to the machines of the worker group to execute. If Default is selected, randomly select a worker machine for execution.
  • Times of failed retry attempts: The number of times the task failed to resubmit. You can select from drop-down or fill-in a number.
  • Failed retry interval: The time interval for resubmitting the task after a failed task. You can select from drop-down or fill-in a number.
  • Timeout alarm: Check the timeout alarm and timeout failure. When the task runs exceed the "timeout", an alarm email will send and the task execution will fail.
  • Target task name: Target task name of this Pigeon node.