Hive_元数据配置到MySQL

驱动拷贝

1．在/opt/software/mysql-libs目录下解压mysql-connector-java-5.1.27.tar.gz驱动包

[root@hadoop102 mysql-libs]# tar -zxvf mysql-connector-java-5.1.27.tar.gz

2．拷贝/opt/software/mysql-libs/mysql-connector-java-5.1.27目录下的mysql-connector-java-5.1.27-bin.jar到/opt/module/hive/lib/

[root@hadoop102 mysql-connector-java-5.1.27]# cp mysql-connector-java-5.1.27-bin.jar

 /opt/module/hive/lib/

配置Metastore到MySql

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

[atguigu@hadoop102 conf]$ touch hive-site.xml

[atguigu@hadoop102 conf]$ vi hive-site.xml

2．根据官方文档配置参数，拷贝数据到hive-site.xml文件中

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

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>

   <property>

     <name>javax.jdo.option.ConnectionURL</name>

     <value>jdbc:mysql://hadoop102:3306/metastore?createDatabaseIfNotExist=true</value>

     <description>JDBC connect string for a JDBC metastore</description>

   </property>

 

   <property>

     <name>javax.jdo.option.ConnectionDriverName</name>

     <value>com.mysql.jdbc.Driver</value>

     <description>Driver class name for a JDBC metastore</description>

   </property>

 

   <property>

     <name>javax.jdo.option.ConnectionUserName</name>

     <value>root</value>

     <description>username to use against metastore database</description>

   </property>

 

   <property>

     <name>javax.jdo.option.ConnectionPassword</name>

     <value>000000</value>

     <description>password to use against metastore database</description>

   </property>

</configuration>

3．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）

多窗口启动Hive测试

1．先启动MySQL

[atguigu@hadoop102 mysql-libs]$ mysql -uroot -p000000

查看有几个数据库

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| mysql             |

| performance_schema |

| test               |

+--------------------+

2．再次打开多个窗口，分别启动hive

[atguigu@hadoop102 hive]$ bin/hive

3．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               |

+--------------------+