hadoop 从客户端的hdfs测试程序连到linux 上的hadoop（hdfs）要调用的方法

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at org.apache.hadoop.ipc.Client.call(Client.java:1110)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:226)
at $Proxy0.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:398)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:384)
at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:111)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:213)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:180)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:89)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1514)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:67)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:1548)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1530)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:228)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:111)

at com.cloudwave.server.hadoop.HdfsTest.<clinit>(HdfsTest.java:42)

附

at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(Unknown Source)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:408)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:425)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:532)
at org.apache.hadoop.ipc.Client$Connection.access$2300(Client.java:210)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1247)
at org.apache.hadoop.ipc.Client.call(Client.java:1078)