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Failed to connect to server: hadoop/ip:9000: try once and fail.

发布时间 2023-09-12 14:45:27作者: 凉冰24

hadoop 连接失败，报如下错误！

java.net.ConnectException: Connection refused
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495)
	at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:681)
	at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:777)
	at org.apache.hadoop.ipc.Client$Connection.access$3500(Client.java:409)
	at org.apache.hadoop.ipc.Client.getConnection(Client.java:1542)
	at org.apache.hadoop.ipc.Client.call(Client.java:1373)
	at org.apache.hadoop.ipc.Client.call(Client.java:1337)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:227)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
	at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:787)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:398)
	at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:163)
	at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:155)
	at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:335)
	at com.sun.proxy.$Proxy11.getFileInfo(Unknown Source)
	at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1700)
	at org.apache.hadoop.hdfs.DistributedFileSystem$27.doCall(DistributedFileSystem.java:1436)
	at org.apache.hadoop.hdfs.DistributedFileSystem$27.doCall(DistributedFileSystem.java:1433)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1433)
	at org.apache.hadoop.fs.Globber.getFileStatus(Globber.java:64)
	at org.apache.hadoop.fs.Globber.doGlob(Globber.java:282)
	at org.apache.hadoop.fs.Globber.glob(Globber.java:148)
	at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:1685)
	at org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:326)
	at org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:235)
	at org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:218)
	at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:103)
	at org.apache.hadoop.fs.shell.Command.run(Command.java:165)
	at org.apache.hadoop.fs.FsShell.run(FsShell.java:315)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
	at org.apache.hadoop.fs.FsShell.main(FsShell.java:378)
df: Call From hadoop/192.168.40.18 to hadoop:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

原因1：没有配置好Linux中的Hadoop。
原因2：Hadoop没有启动。
解决方案：重新配置Hadoop。启动Hadoop。
start-dfs.sh