hive (一)

1、配置 hive-site.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>  
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>  
<configuration>  
   <property>  
        <name>javax.jdo.option.ConnectionURL</name>  
        <value>jdbc:mysql://master/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>MyNewPass1!</value>  
    </property>  
    <property>    
   <name>hive.metastore.schema.verification</name>    
   <value>false</value>    
    <description>    
    Enforce metastore schema version consistency.    
    True: Verify that version information stored in metastore matches with one from Hive jars.  Also disable automatic    
          schema migration attempt. Users are required to manully migrate schema after Hive upgrade which ensures    
          proper metastore schema migration. (Default)    
    False: Warn if the version information stored in metastore doesn't match with one from in Hive jars.    
    </description>    
 </property>   
</configuration>  

2、初始化

bin/schematool -initSchema -dbType mysql

3、

4、

 4、开启开启 metastore和hiveserver2

hive --service metastore &

hive --service hiveserver2 &

可以通过命令netstat -ntulp |grep 10000 
可以看到结果 
tcp 0 0 0.0.0.0:10000 0.0.0.0:* LISTEN 27799/java

5、hive jdbc

public static void main(String[] args) throws Exception {
        Class.forName("org.apache.hive.jdbc.HiveDriver");
        // default为数据库名
        Connection con = DriverManager.getConnection("jdbc:hive2://master:10000/db_hive_test");
        Statement stmt = con.createStatement();
        String querySQL = "SELECT * FROM student";

        ResultSet res = stmt.executeQuery(querySQL);

        while (res.next()) {
            System.out.println(res.getString(1)+","+res.getString(2));
        }

    }

 

hive安装：参考https://www.cnblogs.com/hmy-blog/p/6506417.html