【Spark】SparkSession基礎

原創 我是旺领导 2020-06-20 05:13

 

SparkSession = SparkContext + HiveContext + StreamingContext + SQLContext

 

val conf = new SparkConf().setMaster("master").setAppName("appName1")
val sc = new SparkContext(conf)  //或者val sc = new SparkContext("master","appName1")

SparkConf一旦被設置，就不能被修改，存儲setting的事ConcurrentHashMap

 

 

 

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