spark 笔记 10: TaskScheduler相关

任务调度器的接口类。应用程序可以定制自己的调度器来执行。当前spark只实现了一个任务调度器)
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val createTime = System.currentTimeMillis()

class DriverActor(sparkProperties: Seq[(String, String)]) extends Actor with ActorLogReceive {

override protected def log = CoarseGrainedSchedulerBackend.this.log

private val executorActor = new HashMap[String, ActorRef]
private val executorAddress = new HashMap[String, Address]
private val executorHost = new HashMap[String, String]
private val freeCores = new HashMap[String, Int]
private val totalCores = new HashMap[String, Int]
private val addressToExecutorId = new HashMap[Address, String]

来自为知笔记(Wiz)