spark-信用卡欺诈识别

题目：

代码：fault_detect.py

import sys
from pyspark import SparkContext
from pyspark.streaming import StreamingContext

def detect(new_values,fault_state):
    for value in new_values:
        if value<1.0:
            fault_state=1.0
        elif value>100.0 and fault_state==1.0:
            fault_state=2.0
            return fault_state
        else:
            fault_state=0.0
    return fault_state

if __name__=="__main__":
    if len(sys.argv)!=3:
        sys.exit(-1)
    sc=SparkContext(appName="FaultDetect")
    sc.setLogLevel("ERROR")
    ssc=StreamingContext(sc,1)
    ssc.checkpoint("file:///root/spark/stateful")
    lines=ssc.socketTextStream(sys.argv[1],int(sys.argv[2]))
    counts=lines.map(lambda line:line.split()) 
                .map(lambda id_amount:(id_amount[0],float(id_amount[1]))) 
                .updateStateByKey(detect)
    result=counts.filter(lambda x:x[1]==2.0).map(lambda x:x[0]+"is detected as fault")
    result.pprint()
    ssc.start()
    ssc.awaitTermination()

搭建集群： 

 在spark-master窗口：

新开一个窗口：spark-worker1：

运行： 

 注意最后的端口号要与master的一样！！！

spark-submit --master spark://spark-master:7077 fault_detect.py spark-master 9001