java.io.IOException: DataStreamer Exception: 

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:796)

Caused by: java.nio.channels.UnresolvedAddressException

at sun.nio.ch.Net.checkAddress(Net.java:101)

at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:622)

at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:192)

at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)

at org.apache.hadoop.hdfs.DFSOutputStream.createSocketForPipeline(DFSOutputStream.java:1782)

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1559)

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1512)

at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:668)

在create的时候遇到了的问题