Spark默认Derby数据库改为Mysql配置

在classpath下修改hive-site.xml

<configuration>
    <property>
            <name>hive.metastore.warehouse.dir</name>  
            <value>/user/hive/warehouse</value>  
    </property>
    <property>
            <name>javax.jdo.option.ConnectionURL</name>  
            <value>jdbc:mysql://192.168.222.3:3306/hive?createDatabaseIfNotExist=true</value>  
    </property>
    <property>
            <name>javax.jdo.option.ConnectionDriverName</name>  
            <value>com.mysql.jdbc.Driver</value>  
    </property>
    <property>  
            <name>javax.jdo.option.ConnectionUserName</name>  
            <value>root</value>  
    </property>
    <property>  
            <name>javax.jdo.option.ConnectionPassword</name>  
            <value>123456</value>  
    </property>
    <property>  
            <name>hive.metastore.local</name>  
            <value>true</value>  
    </property>
    <!--    <property>  -->
    <!--            <name>hive.metastore.uris</name>  -->
    <!--            <value>thrift://192.168.1.188:9083</value>  -->
    <!--    </property>  -->
</configuration>

报错：

解决方法：

进入mysql命令行  依次输入以下命令：

use mysql;
show tables;
select user, host from user;
update user set host ='%' where user ='root';
出现下面的错误 不用管

再输入以下命令执行刷新权限：flush privileges; 重启mysql

再次重启hive 一切正常

注意：进入mysql 后 

use mysql;

select user, host from user;

会发现有两个user字段为空的用户 一定要删除：delete from user where user='';