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  1. java.net.ConnectException: Call From Hop-NameNode/54.229.135.116 to Hop-NameNode:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
  2. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  3. at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
  4. at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  5. at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
  6. at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:791)
  7. at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:731)
  8. at org.apache.hadoop.ipc.Client.call(Client.java:1472)
  9. at org.apache.hadoop.ipc.Client.call(Client.java:1399)
  10. at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
  11. at com.sun.proxy.$Proxy9.getTransactionId(Unknown Source)
  12. at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolTranslatorPB.getTransactionID(NamenodeProtocolTranslatorPB.java:125)
  13. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  14. at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  15. at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  16. at java.lang.reflect.Method.invoke(Method.java:606)
  17. at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
  18. at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
  19. at com.sun.proxy.$Proxy10.getTransactionID(Unknown Source)
  20. at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.countUncheckpointedTxns(SecondaryNameNode.java:641)
  21. at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.shouldCheckpointBasedOnCount(SecondaryNameNode.java:649)
  22. at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doWork(SecondaryNameNode.java:393)
  23. at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$1.run(SecondaryNameNode.java:361)
  24. at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:412)
  25. at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:357)
  26. at java.lang.Thread.run(Thread.java:745)
  27. Caused by: java.net.ConnectException: Connection refused
  28. at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
  29. at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:744)
  30. at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
  31. at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)
  32. at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:494)
  33. at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:607)
  34. at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:705)
  35. at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:368)
  36. at org.apache.hadoop.ipc.Client.getConnection(Client.java:1521)
  37. at org.apache.hadoop.ipc.Client.call(Client.java:1438)
  38. ... 18 more
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