Package org.apache.flink.runtime.jobgraph.tasks

Interface TaskOperatorEventGateway

All Known Implementing Classes:
RpcTaskOperatorEventGateway
public interface TaskOperatorEventGateway
Gateway to send an OperatorEvent or CoordinationRequest from a Task to the OperatorCoordinator JobManager side.

This is the first step in the chain of sending Operator Events and Requests from Operator to Coordinator. Each layer adds further context, so that the inner layers do not need to know about the complete context, which keeps dependencies small and makes testing easier. 

     
  • OperatorEventGateway takes the event, enriches the event with the OperatorID, and
         forwards it to:
    • 
     
  • TaskOperatorEventGateway enriches the event with the ExecutionAttemptID and
         forwards it to the:
    • 
     
  • JobMasterOperatorEventGateway which is RPC interface from the TaskManager to the JobManager.
    •

    • Method Details

      • sendOperatorEventToCoordinator

        void sendOperatorEventToCoordinator(OperatorID operator, org.apache.flink.util.SerializedValue<OperatorEvent> event)
        Sends an event from the operator (identified by the given operator ID) to the operator coordinator (identified by the same ID).

      • sendRequestToCoordinator

        CompletableFuture<CoordinationResponse> sendRequestToCoordinator(OperatorID operator, org.apache.flink.util.SerializedValue<CoordinationRequest> request)
        Sends a request from current operator to a specified operator coordinator which is identified by the given operator ID and return the response.