io.gearpump.streaming.appmaster

TaskScheduler

Related Docs: object TaskScheduler | package appmaster

trait TaskScheduler extends AnyRef

This schedules tasks to run for new allocated resources.

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TaskSchedulerImpl
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Abstract Value Members

  1. abstract def executorFailed(executorId: Int): Array[ResourceRequest]

    This notify the scheduler that {executorId} is failed, and expect a set of ResourceRequest for all failed tasks on that executor.

    This notify the scheduler that {executorId} is failed, and expect a set of ResourceRequest for all failed tasks on that executor.

    executorId

    executor that failed

    returns

  2. abstract def getResourceRequests(): Array[ResourceRequest]

    Get the resource requirements for all unscheduled tasks.

  3. abstract def schedule(workerId: Int, executorId: Int, resource: Resource): List[TaskId]

    This notify the scheduler that a resource slot on {workerId} and {executorId} is allocated, and expect a task to be scheduled in return.

    This notify the scheduler that a resource slot on {workerId} and {executorId} is allocated, and expect a task to be scheduled in return. Task locality should be considered when deciding whether to offer a task on target {worker} and {executor}

    workerId

    which worker this resource is located.

    executorId

    which executorId this resource belongs to.

    returns

  4. abstract def setDAG(dag: DAG): Unit

    This notify the scheduler that the task DAG is created.

    This notify the scheduler that the task DAG is created.

    dag

    task dag

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