黑猴子的家：Hive元数据配置到MySql

1、驱动拷贝

1）在/opt/software/目录下解压mysql-connector-java-5.1.46.tar.gz驱动包

[victor@node1 software]$ unzip mysql-libs.zip
[victor@node1 mysql-libs]$ tar -zxvf mysql-connector-java-5.1.46.tar.gz

2）拷贝驱动到/opt/module/hive/lib/目录下

[victor@node1 mysql-con...]$ cp mysql-connector-java-5.1.46-bin.jar /opt/module/hive/lib/

2、配置Metastore到MySql

1）在/opt/module/hive/conf目录下创建一个hive-site.xml

[victor@node1 conf]$ touch hive-site.xml
[victor@node1 conf]$ vim hive-site.xml
**尖叫提示，如果用第三方编辑，需要先在hive-site.xml文件中输入任意字符后保存（保证编码）**

2）从hive-default.xml.template拷贝信息到hive-site.xml文件

[victor@node1 conf]$ cat hive-default.xml.template > hive-site.xml
尖叫提示: 复制头部信息即可

3）根据官方文档配置参数

官网地址

https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin

hive-site.xml

 
 
 

      
           javax.jdo.option.ConnectionURL
           jdbc:mysql://node1:3306/metastore?createDatabaseIfNotExist=true
           JDBC connect string for a JDBC metastore
      

      
           javax.jdo.option.ConnectionDriverName
           com.mysql.jdbc.Driver
           Driver class name for a JDBC metastore
      

      
           javax.jdo.option.ConnectionUserName
           root
           username to use against metastore database
      

      
           javax.jdo.option.ConnectionPassword
           000000
           password to use against metastore database
     


尖叫提示：配置完毕后，如果启动hive异常，可以重新启动虚拟机。（重启后，别忘了启动hadoop集群）

3、多窗口启动Hive测试

1）先启动MySQL

[victor@node1 ~]$ service mysql start
[victor@node1 ~]$ service mysql status
[victor@node1 ~]$ mysql -uroot -p000000

2）查看有几个数据库

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+

3）再次打开多个窗口，分别启动hive

[victor@node1 hive]$ bin/hive

4）启动hive后，回到MySQL窗口查看数据库，显示增加了metastore数据库

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| metastore |
| mysql |
| performance_schema |
| test |
+--------------------+