Package org.apache.flink.runtime.scheduler.adaptivebatch

Interface SpeculativeExecutionHandler

All Known Implementing Classes:
DefaultSpeculativeExecutionHandler, DummySpeculativeExecutionHandler
public interface SpeculativeExecutionHandler
Interface for managing speculative execution of tasks and handling slow task detection.

  • Method Details

    • init

      void init(ExecutionGraph executionGraph, org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor mainThreadExecutor, org.apache.flink.metrics.MetricGroup metricGroup)
      Initial speculative execution handler.

    • stopSlowTaskDetector

      void stopSlowTaskDetector()
      Stops the slow task detector.

    • notifyTaskFinished

      void notifyTaskFinished(Execution execution, Function<ExecutionVertexID,CompletableFuture<?>> cancelPendingExecutionsFunction)
      Notifies that a task has finished its execution.
      Parameters:
      execution - the execution that has finished
      cancelPendingExecutionsFunction - the function to cancel pending executions

    • notifyTaskFailed

      void notifyTaskFailed(Execution execution)
      Notifies that a task has failed its execution.
      Parameters:
      execution - the execution that has failed

    • handleTaskFailure

      boolean handleTaskFailure(Execution failedExecution, @Nullable Throwable error, BiConsumer<Execution,Throwable> handleLocalExecutionAttemptFailure)
      Handles a task failure.
      Parameters:
      failedExecution - the execution that failed
      error - the error that caused the failure, if available
      handleLocalExecutionAttemptFailure - a consumer that handles local execution attempt failure
      Returns:
      true if the failure was handled as a local failure, false otherwise

    • resetForNewExecution

      void resetForNewExecution(ExecutionVertexID executionVertexId)
      Resets the state of the component for a new execution of a specific execution vertex.
      Parameters:
      executionVertexId - the ID of the execution vertex to reset