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  • java.net.ConnectException: Connection refused: connect

    WARN [main] [org.apache.spark.util.Utils] - Service 'SparkUI' could not bind on port 4040. Attempting port 4041.
     WARN [receiver-supervisor-future-0] [org.apache.spark.streaming.receiver.ReceiverSupervisorImpl] - Restarting receiver with delay 2000 ms: Error connecting to 192.168.137.4:9000
    java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.connect0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at java.net.Socket.connect(Socket.java:538)
        at java.net.Socket.<init>(Socket.java:434)
        at java.net.Socket.<init>(Socket.java:211)
        at org.apache.spark.streaming.dstream.SocketReceiver.onStart(SocketInputDStream.scala:61)
        at org.apache.spark.streaming.receiver.ReceiverSupervisor.startReceiver(ReceiverSupervisor.scala:149)
        at org.apache.spark.streaming.receiver.ReceiverSupervisor.start(ReceiverSupervisor.scala:131)
        at org.apache.spark.streaming.scheduler.ReceiverTracker$ReceiverTrackerEndpoint$$anonfun$9.apply(ReceiverTracker.scala:607)
        at org.apache.spark.streaming.scheduler.ReceiverTracker$ReceiverTrackerEndpoint$$anonfun$9.apply(ReceiverTracker.scala:597)
        at org.apache.spark.SparkContext$$anonfun$34.apply(SparkContext.scala:2173)
        at org.apache.spark.SparkContext$$anonfun$34.apply(SparkContext.scala:2173)
        at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
        at org.apache.spark.scheduler.Task.run(Task.scala:108)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)


    
    
    
    


      连接 nc  的时候   读取socket端口的数据  报错的

    因为我的端口写错了    大家注意端口和ip是否写错了

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  • 原文地址:https://www.cnblogs.com/JBLi/p/11361587.html
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