Hadoop环境配置（8）-hive

1.将下载的hive安装包拖至/opt/softwore/中

将hive解压到cd /opt/module文件夹下 

cd /opt/software/
tar -zxvf apache-hive-3.1.2-bin.tar.gz -C /opt/module/

2.修改系统环境变量

vi /etc/profile

在编辑面板下添加下面代码

export HIVE_HOME=/opt/module/apache-hive-3.1.2-bin
export PATH=$PATH:$HADOOP_HOME/sbin:$HIVE_HOME/bin

重启环境配置

source /etc/profile

3.修改hive的环境变量

cd  /opt/module/apache-hive-3.1.2-bin/bin/

编辑hive-config.sh文件

vi hive-config.sh

添加如下内容

export JAVA_HOME=/opt/module/jdk1.8.0_212
export HIVE_HOME=/opt/module/apache-hive-3.1.2-bin
export HADOOP_HOME=/opt/module/hadoop-3.2.0
export HIVE_CONF_DIR=/opt/module/apache-hive-3.1.2-bin/conf

4.拷贝hive配置的文件

cd  /opt/module/apache-hive-3.1.2-bin/conf/
cp hive-default.xml.template hive-site.xml

5.修改Hive配置文件,找到对应的位置进行修改

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

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

    javax.jdo.option.ConnectionPassword
    123456
    password to use against metastore database
  

    javax.jdo.option.ConnectionURL
jdbc:mysql://192.168.1.100:3306/hive?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT
    
      JDBC connect string for a JDBC metastore.
      To use SSL to encrypt/authenticate the connection, provide database-specific SSL flag in the connection URL.
      For example, jdbc:postgresql://myhost/db?ssl=true for postgres database.
    
  
  
    datanucleus.schema.autoCreateAll
    true
    Auto creates necessary schema on a startup if one doesn't exist. Set this to false, after creating it once.To enable auto create also set hive.metastore.schema.verification=false. Auto creation is not recommended for production use cases, run schematool command instead.
  

    hive.metastore.schema.verification
    false
    
      Enforce metastore schema version consistency.
      True: Verify that version information stored in is compatible with one from Hive jars.  Also disable automatic
            schema migration attempt. Users are required to manually 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.
    
  

    hive.exec.local.scratchdir
    /opt/module/apache-hive-3.1.2-bin/tmp/${user.name}
    Local scratch space for Hive jobs
  
  
system:java.io.tmpdir
/opt/module/apache-hive-3.1.2-bin/iotmp



  
    hive.downloaded.resources.dir
/opt/module/apache-hive-3.1.2-bin/tmp/${hive.session.id}_resources
    Temporary local directory for added resources in the remote file system.
  

    hive.querylog.location
    /opt/module/apache-hive-3.1.2-bin/tmp/${system:user.name}
    Location of Hive run time structured log file
  
  
    hive.server2.logging.operation.log.location
/opt/module/apache-hive-3.1.2-bin/tmp/${system:user.name}/operation_logs
    Top level directory where operation logs are stored if logging functionality is enabled
  
  
    hive.metastore.db.type
    mysql
    
      Expects one of [derby, oracle, mysql, mssql, postgres].
      Type of database used by the metastore. Information schema & JDBCStorageHandler depend on it.
    
  
  
    hive.cli.print.current.db
    true
    Whether to include the current database in the Hive prompt.
  
  
    hive.cli.print.header
    true
    Whether to print the names of the columns in query output.
  
  
    hive.metastore.warehouse.dir
    /opt/hive/warehouse
    location of default database for the warehouse
  

6.上传mysql驱动包到/opt/module/apache-hive-3.1.2-bin/lib/文件夹下

驱动包：mysql-connector-java-8.0.15.zip，解压后从里面获取jar包

7.确保 mysql数据库中有名称为hive的数据库

mysql> create database hive;
#注意hive后的;不要忘记

8.初始化元数据库

schematool -dbType mysql -initSchema

9.群起一下

start-all.sh    #Hadoop100上
start-yarn.sh   #Hadoop101上

 10.启动hive

hive

11.检测是否启动成功

show databases；