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建立SparkStreamingContext
1)val conf=new SparkConf().setMaster("local[2]").setAppName("wordcount")
val streamContext=new StreamingContext(conf,Seconds(5))
建立SparkStreamingContext
1)val conf=new SparkConf().setMaster("local[2]").setAppName("wordcount")
val streamContext=new StreamingContext(conf,Seconds(5))