java API连接虚拟机上的hbase

今天用本地的eclipse连接虚拟机上的hbase数据库，代码如下：

public static void main(String[] args) throws Exception{
			Configuration conf = HBaseConfiguration.create();
			//conf.set("fs.defaultFS", "hdfs://192.168.252.200:9000/");
			//conf.set("hbase.master", "192.168.252.200");
			conf.set("hbase.zookeeper.quorum","192.168.252.200:2181,192.168.252.201:2181,192.168.252.202:2181");
			conf.set("hbase.zookeeper.property.clientPort", "2181");
			@SuppressWarnings({ "resource", "deprecation" })
			HBaseAdmin admin = new HBaseAdmin(conf); 

			 System.out.println(1);
			TableName name = TableName.valueOf("nvshen");
			HTableDescriptor desc = new HTableDescriptor(name);
			 System.out.println(2);
			HColumnDescriptor base_info = new HColumnDescriptor("base_info");
			HColumnDescriptor extra_info = new HColumnDescriptor("extra_info");
			base_info.setMaxVersions(5);
			extra_info.setMaxVersions(5);
			System.out.println(3);
			desc.addFamily(base_info);
			desc.addFamily(extra_info);
			System.out.println(4);
			admin.createTable(desc);
			System.out.println("创建完成");
		}

我虚拟机上用的是自己搭建的zookeeper集群

然后在运行代码时，总是卡在最后的创建上，而且程序也不终止，也不提示任何信息，让人很是头疼，但是过了很长一段时间之后eclipse就会报错了，这要是没有一点耐心根本发现不了会报错，大致错误如下：

xception in thread "main" org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=35, exceptions:
Tue Sep 12 11:25:29 CST 2017, RpcRetryingCaller{globalStartTime=1505186727016, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: java.net.UnknownHostException: web2.2ge.cn
Tue Sep 12 11:25:29 CST 2017, RpcRetryingCaller{globalStartTime=1505186727016, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: java.net.UnknownHostException: web2.2ge.cn
Tue Sep 12 11:25:29 CST 2017, RpcRetryingCaller{globalStartTime=1505186727016, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: java.net.UnknownHostException: web2.2ge.cn
Tue Sep 12 11:25:30 CST 2017, RpcRetryingCaller{globalStartTime=1505186727016, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: java.net.UnknownHostException: web2.2ge.cn
Tue Sep 12 11:25:30 CST 2017, RpcRetryingCaller{globalStartTime=1505186727016, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: java.net.UnknownHostException: web2.2ge.cn
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:157)

经过百度搜索之后，应该在C:\Windows\System32\drivers\etc\hosts目录下加上虚拟机上的地址映射关系，即虚拟上的 /etc/hosts文件中配置Hadoop时添加的东西，将其复制到本地的C:\Windows\System32\drivers\etc\hosts，然后保存，再次运行就可以执行成功了

在第一次编辑C:\Windows\System32\drivers\etc\hosts文件时会显示权限不够，这时候需要先对该文件进行一些权限的设置，详细内容见一下地址：

https://jingyan.baidu.com/article/624e7459b194f134e8ba5a8e.html

如果有问题，请留言交流