win7上開發hadoop

在eclips連接hadoop時，報Unknown protocol to job tracker:?org.apache.hadoop.hdfs.protocol.ClientProtocol

org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.ipc.RemoteException<span style="color: white; background-color: rgb(0, 70, 153);">:</span> <a target=_blank name="baidusnap9" style="color: rgb(255, 153, 0);"></a><span style="color: white; background-color: rgb(153, 0, 153);">java</span>.io.IOException<span style="color: white; background-color: rgb(0, 70, 153);">:</span> Unknown protocol to job tracker<span style="color: white; background-color: rgb(0, 70, 153);">:</span> org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.hdfs.protocol.ClientProtocolat org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.mapred.JobTracker.getProtocolVersion(JobTracker.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>362)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>39)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>25)at <span style="color: white; background-color: rgb(153, 0, 153);">java</span>.lang.reflect.Method.invoke(Method.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>597)at org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.ipc.RPC$Server.call(RPC.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>578)at org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.ipc.Server$Handler$1.run(Server.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>1393)at org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.ipc.Server$Handler$1.run(Server.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>1389)at <span style="color: white; background-color: rgb(153, 0, 153);">java</span>.security.AccessController.doPrivileged(Native Method)at javax.security.auth.Subject.doAs(Subject.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>396)at org.apache.<span style="background-color: rgb(255, 153, 153);">hadoop</span>.security.UserGroupInformation.doAs(UserGroupInformation.<span style="color: white; background-color: rgb(153, 0, 153);">java:</span>1149)

原因是Host 的端口地址寫反了。下圖是正確的。

總結

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