java.net.ConnectException: Connection refused

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    Root Cause Analysis

    1. java.net.ConnectException

      Connection refused

      at sun.nio.ch.Net.connect()
    2. Java RT
      SocketChannelImpl.connect
      1. sun.nio.ch.Net.connect(Native Method)
      2. sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:500)
      2 frames
    3. Apache Kafka
      SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp
      1. kafka.network.BlockingChannel.connect(BlockingChannel.scala:57)
      2. kafka.consumer.SimpleConsumer.connect(SimpleConsumer.scala:44)
      3. kafka.consumer.SimpleConsumer.reconnect(SimpleConsumer.scala:57)
      4. kafka.consumer.SimpleConsumer.liftedTree1$1(SimpleConsumer.scala:79)
      5. kafka.consumer.SimpleConsumer.kafka$consumer$SimpleConsumer$$sendRequest(SimpleConsumer.scala:71)
      6. kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(SimpleConsumer.scala:110)
      6 frames