3.3 SparkListenerBus - 监听器消息注册
2018-11-14 本文已影响0人
GongMeng
这个BUS挂载spark的webui上, 注册了多个监听事件, 帮助web ui显示当前整个spark applicaiton的最新状态
private[spark] trait SparkListenerBus extends ListenerBus[SparkListener, SparkListenerEvent] {
override def onPostEvent(listener: SparkListener, event: SparkListenerEvent): Unit = {
event match {
case stageSubmitted: SparkListenerStageSubmitted =>
listener.onStageSubmitted(stageSubmitted)
case stageCompleted: SparkListenerStageCompleted =>
listener.onStageCompleted(stageCompleted)
case jobStart: SparkListenerJobStart =>
listener.onJobStart(jobStart)
case jobEnd: SparkListenerJobEnd =>
listener.onJobEnd(jobEnd)
case taskStart: SparkListenerTaskStart =>
listener.onTaskStart(taskStart)
case taskGettingResult: SparkListenerTaskGettingResult =>
listener.onTaskGettingResult(taskGettingResult)
case taskEnd: SparkListenerTaskEnd =>
listener.onTaskEnd(taskEnd)
case environmentUpdate: SparkListenerEnvironmentUpdate =>
listener.onEnvironmentUpdate(environmentUpdate)
case blockManagerAdded: SparkListenerBlockManagerAdded =>
listener.onBlockManagerAdded(blockManagerAdded)
case blockManagerRemoved: SparkListenerBlockManagerRemoved =>
listener.onBlockManagerRemoved(blockManagerRemoved)
case unpersistRDD: SparkListenerUnpersistRDD =>
listener.onUnpersistRDD(unpersistRDD)
case applicationStart: SparkListenerApplicationStart =>
listener.onApplicationStart(applicationStart)
case applicationEnd: SparkListenerApplicationEnd =>
listener.onApplicationEnd(applicationEnd)
case metricsUpdate: SparkListenerExecutorMetricsUpdate =>
listener.onExecutorMetricsUpdate(metricsUpdate)
case executorAdded: SparkListenerExecutorAdded =>
listener.onExecutorAdded(executorAdded)
case executorRemoved: SparkListenerExecutorRemoved =>
listener.onExecutorRemoved(executorRemoved)
case blockUpdated: SparkListenerBlockUpdated =>
listener.onBlockUpdated(blockUpdated)
case logStart: SparkListenerLogStart => // ignore event log metadata
}
}
}