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Hadoop Problem : java.io.IOException: Unknown protocol to DataNode: org.apache.hadoop.mapred.JobSubm

2014-09-17 13:44 746 查看

Cannot connect to the Map/Reduce location: myfs

java.io.IOException: Unknown protocol to DataNode: org.apache.hadoop.mapred.JobSubmissionProtocol

Cannot connect to the Map/Reduce location: myfs
java.io.IOException: Unknown protocol to DataNode: org.apache.hadoop.mapred.JobSubmissionProtocol
	at org.apache.hadoop.hdfs.server.datanode.DataNode.getProtocolVersion(DataNode.java:1445)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)

无法打开dfs location。报上述错误。

解决：

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