java连接hbase报错Caused by: java.lang.IllegalArgumentException: java.net.UnknownHostException: mycluster

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log4j:WARN No appenders could be found for logger (org.apache.hadoop.security.Groups).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" java.io.IOException: java.lang.reflect.InvocationTargetException
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:240)
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
	at com.zapoul.TestHBase.main(TestHBase.java:44)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
	... 3 more
Caused by: java.lang.ExceptionInInitializerError
	at org.apache.hadoop.hbase.ClusterId.parseFrom(ClusterId.java:64)
	at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:75)
	at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)
	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:907)
	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:691)
	... 8 more
Caused by: java.lang.IllegalArgumentException: java.net.UnknownHostException: mycluster
	at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:373)
	at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:258)
	at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:153)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:602)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:547)
	at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:139)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2591)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:89)
	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2625)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2607)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:368)
	at org.apache.hadoop.fs.Path.getFileSystem(Path.java:296)
	at org.apache.hadoop.hbase.util.DynamicClassLoader.initTempDir(DynamicClassLoader.java:120)
	at org.apache.hadoop.hbase.util.DynamicClassLoader.<init>(DynamicClassLoader.java:98)
	at org.apache.hadoop.hbase.protobuf.ProtobufUtil.<clinit>(ProtobufUtil.java:246)
	... 13 more
Caused by: java.net.UnknownHostException: mycluster
	... 28 more