ava.net.BindException: Problem binding to [ubuntu-master:9000] java.net.BindException: 地址已在使用; For m

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java.net.BindException: Problem binding to [ubuntu-master:9000] java.net.BindException: 地址已在使用; For more details see: http://wiki.apache.org/hadoop/BindException
   at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:719)
   at org.apache.hadoop.ipc.Server.bind(Server.java:422)
   at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:534)
   at org.apache.hadoop.ipc.Server.<init>(Server.java:2203)
   at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:897)
   at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:505)
   at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:480)
   at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:742)
   at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.<init>(NameNodeRpcServer.java:273)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.createRpcServer(NameNode.java:510)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:493)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:684)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:669)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1254)
   at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320)
2014-07-22 09:49:25,471 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1

2014-07-22 09:49:25,475 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:

namenode节点出现如上错误，需要使用命令sudo netstat -antup查看相应的被占用的进程，然后kill掉，

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