3.Spark设计与运行原理,基本操作
1.请用图文阐述Spark生态系统的组成及各组件的功能
2.请详细阐述Spark的几个主要概念及相互关系:
Master, Worker; RDD,DAG; Application, job,stage,task; driver,executor,Claster Manager
DAGScheduler, TaskScheduler.
Master, Worker:
RDD,DAG:
Application, job,stage,task:
driver,executor,Cluster Manager:
DAGScheduler, TaskScheduler:
3.在PySparkShell尝试以下代码,观察执行结果,理解sc,RDD,DAG。请画出相应的RDD转换关系图。