java.io.IOException: Failed on local exception: java.net.SocketException: Unresolved address; Host Details : local host is: "hadoop101"; destination host is: (unknown):0; 
	at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:773)
	at org.apache.hadoop.ipc.Server.bind(Server.java:425)
	at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:574)
	at org.apache.hadoop.ipc.Server.<init>(Server.java:2215)
	at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:938)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:534)
	at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:509)
	at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:783)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.<init>(NameNodeRpcServer.java:344)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createRpcServer(NameNode.java:673)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:646)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:811)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:795)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1488)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1554)
Caused by: java.net.SocketException: Unresolved address
	at sun.nio.ch.Net.translateToSocketException(Net.java:131)
	at sun.nio.ch.Net.translateException(Net.java:157)
	at sun.nio.ch.Net.translateException(Net.java:163)
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:76)
	at org.apache.hadoop.ipc.Server.bind(Server.java:408)
	... 13 more
Caused by: java.nio.channels.UnresolvedAddressException
	at sun.nio.ch.Net.checkAddress(Net.java:101)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:218)
	at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
	... 14 more

解决方法: 这个异常是hadoop的core-site.xmlpeiz配置文件hdfs://192.168.140.135:9000的ip地址配置的不对
    <property>
       <name>fs.defaultFS</name>
      <value>hdfs://192.168.140.135:9000</value>
  </property>

   把ip修改本机的ip就可以了