解決java連接虛擬機Hbase無反應的情況

問題說明：自己用虛擬機安裝了Hbase、zookeeper，然後想用java訪問。

代碼如下：

 import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;
 
 public class HbaseTest {
	 public static void main(String[] args) throws  MasterNotRunningException, IOException{
		String tableName = "myTest";

		Configuration conf = HBaseConfiguration.create();
		conf.set("hbase.master", "192.168.48.129:16010");
		conf.set("hbase.zookeeper.property.clientPort", "2181");
//		conf.set("hbase.zookeeper.quorum", "master");
		conf.set("hbase.zookeeper.quorum", "192.168.48.129");

		Connection conn = ConnectionFactory.createConnection(conf);
		Table table = conn.getTable(TableName.valueOf(tableName));

		Get g = new Get(Bytes.toBytes("row1"));
		Result result = table.get(g);

		byte [] value = result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name"));
		byte[] value1 = result.getValue(Bytes.toBytes("info"), Bytes.toBytes("age"));

		table.close();
		System.out.println(result.toString());
		System.out.println(Bytes.toString(value));
		System.out.println(Bytes.toString(value1));
		}
     
 
 }

結果一直卡在result這一樣沒反應。

解決方案：

1、由於Hbase自帶有zookeeper， 可以先禁用掉自帶的zookeeper。

命令：vim   hbase/conf/hbase-env.sh

2、由於這裏只是想測試下java連接hbae，也並沒有搭建Hdoop環境，所以Hbase的hhbase-size.xml配置如下

3、再對zookeeper進行配置 zoo.cfg

4、因爲是在windows環境下，用java訪問虛擬機的Hbase，所以還需要以下配置

命令：vim /etc/host  添加一行，IP   hostname

命令：vim /etc/sysconfig/network-scripts/ifcfg-eth0 ，修改設備名

windows中相應配置：C:\Windows\System32\drivers\etc  在HOST文件中添加IP hostname

所有的配置就到這裏結束，啓動zookeeper，啓動Hbase

java連接Hbase測試

 import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;
 
 public class HbaseTest {
        public static void main(String[] args) throws  MasterNotRunningException, IOException{
              String tableName = "myTest";
              Configuration conf = HBaseConfiguration.create();
              conf.set("hbase.master", "192.168.48.129:16010");
              conf.set("hbase.zookeeper.property.clientPort", "2181");
//            conf.set("hbase.zookeeper.quorum", "master");
              conf.set("hbase.zookeeper.quorum", "192.168.48.129");
              Connection conn = ConnectionFactory.createConnection(conf);
              Table table = conn.getTable(TableName.valueOf(tableName));
              Get g = new Get(Bytes.toBytes("row1"));
              Result result = table.get(g);
              byte [] value = result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name"));
              byte[] value1 = result.getValue(Bytes.toBytes("info"), Bytes.toBytes("age"));
              table.close();
              System.out.println(result.toString());
              System.out.println(Bytes.toString(value));
              System.out.println(Bytes.toString(value1));
              }
    
 
 }

我個人使用如上方法能夠解決連接Hbase無反應的問題。