hive配置

最新推荐文章于 2023-10-10 17:27:12 发布

ydb_jason

最新推荐文章于 2023-10-10 17:27:12 发布

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环境变量：

vi /etc/profile

HIVE_HOME=/usr/bigdata/hive-2.0.1

PATH=$PATH:$HIVE_HOME/bin

5,初始化数据库

schematool -initSchema -dbType derby

出现以下几行说明初始化成功：

Starting metastore schema

initialization to 2.0.0

Initialization script hive-schema-2.0.0.derby.sql

Initialization script completed

schemaTool completed

6，

启动程序

mkdir -p /usr/bigdata/hive-2.0.1/warehouse

chmod a+rwx /usr/bigdata/hive-2.0.1/warehouse

hive

如果出现hive>提示符则说明启动成功

5. 常见错误

5.1 运行hive时出现

Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType ...) to create the schema. If needed, don't forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql)

错误原因：数据库没有初始化，请参照4.2

5.2 使用schematool初始化数据库时出现

Initialization script hive-schema-2.0.0.derby.sql
Error: FUNCTION 'NUCLEUS_ASCII' already exists. (state=X0Y68,code=30000) org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !! *** schemaTool failed ***

错误原因：数据库文件夹中已经存在一些文件，解决方法就是清空数据库文件夹（也就是前面配置的/opt/hive-2.0.0/metastore_db文件夹）

HIVE基本使用：

http://blog.youkuaiyun.com/f328310543/article/details/42682685

 
         hive-env.xml 
        
         cp  hive-env.sh.template  hive-env.sh 
        
         $HIVE_HOME/bin的hive-env.sh，增加以下四行 
        
         export HADOOP_HOME=/usr/local/hadoop-2.6.0 
        
         export HIVE_HOME=/usr/local/hive-1.2.1 
        
         export JAVA_HOME=/usr/local/jdk1.7.0_80

拷贝mysql链接驱动到 hive/lib下面

 
         HIVE 元数据mysql保存配置 hive-site.xml 
        
         <property> 
        
         <name>hive.metastore.warehouse.dir</name> 
        
         <value>/usr/bigdata/hive- 
         2.0 
         . 
         1 
         /warehouse</value> 
        
         <description>location of  
         default  
         database  
         for  
         the warehouse</description> 
        
         </property> 
        
         <property> 
        
         <name>javax.jdo.option.ConnectionURL</name> 
        
         <value>jdbc:mysql: 
         //localhost:3306/hive?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> 
        
         </property> 
        
         <property> 
        
         <name>javax.jdo.option.ConnectionUserName</name> 
        
         <value>root</value><!-- In my  
         case  
         UserName is hadoop--> 
        
         </property> 
        
         <property> 
        
         <name>javax.jdo.option.ConnectionPassword</name> 
        
         <value>root</value><!-- In my  
         case  
         password is hadoop--> 
        
         </property><br><br><br>