org.apache.kafka.connect.runtime.rest.errors.ConnectRestException: IO Error trying to forward REST request: Connection refused

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    javax.ws.rs.ProcessingException: java.net.ConnectException: Connection refused

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Root Cause Analysis

  1. java.net.ConnectException

    Connection refused

    at java.net.PlainSocketImpl.socketConnect()
  2. Java RT
    HttpURLConnection.getResponseCode
    1. java.net.PlainSocketImpl.socketConnect(Native Method)
    2. java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    3. java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    4. java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    5. java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    6. java.net.Socket.connect(Socket.java:589)
    7. java.net.Socket.connect(Socket.java:538)
    8. sun.net.NetworkClient.doConnect(NetworkClient.java:180)
    9. sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
    10. sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
    11. sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:667)
    12. sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1536)
    13. sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)
    14. java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
    14 frames
  3. org.apache.kafka
    DistributedHerder$12.run
    1. org.apache.kafka.connect.runtime.rest.RestServer.httpRequest(RestServer.java:222)
    2. org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.run(DistributedHerder.java:878)
    2 frames
  4. Java RT
    Thread.run
    1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    2. java.util.concurrent.FutureTask.run(FutureTask.java:266)
    3. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    4. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    5. java.lang.Thread.run(Thread.java:745)
    5 frames