java.net.UnknownHostException: hadoop-slave2.hadoop

[Zhifeiyu]

JAVA API access Hbase-cluster.

Caused by: java.net.UnknownHostException: hadoop-slave2.hadoop
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.<init>(AbstractRpcClient.java:315)
	at org.apache.hadoop.hbase.ipc.AbstractRpcClient.createBlockingRpcChannel(AbstractRpcClient.java:267)
	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getClient(ConnectionManager.java:1639)
	at org.apache.hadoop.hbase.client.ScannerCallable.prepare(ScannerCallable.java:163)
	at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas$RetryingRPC.prepare(ScannerCallableWithReplicas.java:376)
	at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:134)
	... 4 more