Package org.apache.flink.datastream.api.context

Interface TaskInfo

@Experimental public interface TaskInfo
TaskInfo contains all the meta information of the task.

  • Method Details

    • getParallelism

      int getParallelism()
      Get the parallelism of current task.
      Returns:
      the parallelism of this process function.

    • getMaxParallelism

      int getMaxParallelism()
      Get the max parallelism of current task.
      Returns:
      The max parallelism.

    • getTaskName

      String getTaskName()
      Get the name of current task.
      Returns:
      The name of current task.

    • getIndexOfThisSubtask

      int getIndexOfThisSubtask()
      Gets the number of this parallel subtask. The numbering starts from 0 and goes up to parallelism-1 (parallelism as returned by getParallelism()).
      Returns:
      The index of the parallel subtask.

    • getAttemptNumber

      int getAttemptNumber()
      Gets the attempt number of this parallel subtask. First attempt is numbered 0. The attempt number corresponds to the number of times this task has been restarted(after failure/cancellation) since the job was initially started.
      Returns:
      The attempt number of the subtask.