Package org.apache.flink.runtime.resourcemanager.active

Interface ResourceEventHandler<WorkerType extends ResourceIDRetrievable>

All Known Implementing Classes:
ActiveResourceManager
public interface ResourceEventHandler<WorkerType extends ResourceIDRetrievable>
Callback interfaces for handling resource events from external resource managers.

  • Method Details

    • onPreviousAttemptWorkersRecovered

      void onPreviousAttemptWorkersRecovered(Collection<WorkerType> recoveredWorkers)
      Notifies that workers of previous attempt have been recovered from the external resource manager.
      Parameters:
      recoveredWorkers - Collection of worker nodes, in the deployment specific type.

    • onWorkerTerminated

      void onWorkerTerminated(ResourceID resourceId, String diagnostics)
      Notifies that the worker has been terminated.

      See also ResourceManagerDriver.requestResource(org.apache.flink.runtime.clusterframework.TaskExecutorProcessSpec).

      Parameters:
      resourceId - Identifier of the terminated worker.
      diagnostics - Diagnostic message about the worker termination.

    • onError

      void onError(Throwable exception)
      Notifies that an error has occurred that the process cannot proceed.
      Parameters:
      exception - Exception that describes the error.