Hive的安装

Hive安装部署

1）把apache-hive-3.1.2-bin.tar.gz上传到linux的/opt/software目录下
2）解压apache-hive-3.1.2-bin.tar.gz到/opt/module/目录下面

[atguigu@hadoop102 software]$ tar -zxvf /opt/software/apache-hive-3.1.2-bin.tar.gz -C /opt/module/

3）修改apache-hive-3.1.2-bin.tar.gz的名称为hive

[atguigu@hadoop102 software]$ mv /opt/module/apache-hive-3.1.2-bin/ /opt/module/hive

4）修改/etc/profile.d/my_env.sh，添加环境变量

[atguigu@hadoop102 software]$ sudo vim /etc/profile.d/my_env.sh

5）添加内容

#HIVE_HOME
export HIVE_HOME=/opt/module/hive
export PATH=$PATH:$HIVE_HOME/bin

重启Xshell对话框使环境变量生效
6）解决日志Jar包冲突（可选）

[atguigu@hadoop102 software]$ mv $HIVE_HOME/lib/log4j-slf4j-impl-2.10.0.jar $HIVE_HOME/lib/log4j-slf4j-impl-2.10.0.bak

Hive元数据配置到MySql

1 拷贝驱动
将MySQL的JDBC驱动拷贝到Hive的lib目录下

[atguigu@hadoop102 software]$ cp /opt/software/mysql-connector-java-5.1.48.jar $HIVE_HOME/lib

2 配置Metastore到MySql
在$HIVE_HOME/conf目录下新建hive-site.xml文件

[atguigu@hadoop102 software]$ vim $HIVE_HOME/conf/hive-site.xml

添加如下内容

<configuration>
    <property>
        <name>javax.jdo.option.ConnectionURLname>
        <value>jdbc:mysql://hadoop102:3306/metastore?useSSL=falsevalue>
    property>

    <property>
        <name>javax.jdo.option.ConnectionDriverNamename>
        <value>com.mysql.jdbc.Drivervalue>
    property>

    <property>
        <name>javax.jdo.option.ConnectionUserNamename>
        <value>rootvalue>
    property>

    <property>
        <name>javax.jdo.option.ConnectionPasswordname>
        <value>000000value>
    property>

    <property>
        <name>hive.metastore.warehouse.dirname>
        <value>/user/hive/warehousevalue>
    property>

    <property>
        <name>hive.metastore.schema.verificationname>
        <value>falsevalue>
    property>

    <property>
        <name>hive.metastore.urisname>
        <value>thrift://hadoop102:9083value>
    property>

    <property>
    <name>hive.server2.thrift.portname>
    <value>10000value>
    property>

    <property>
        <name>hive.server2.thrift.bind.hostname>
        <value>hadoop102value>
    property>

    <property>
        <name>hive.metastore.event.db.notification.api.authname>
        <value>falsevalue>
    property>
<property>
        <name>hive.server2.active.passive.ha.enablename>
        <value>truevalue>
property>
    <property>
        <name>hive.cli.print.headername>
        <value>truevalue>
    property>

    <property>
        <name>hive.cli.print.current.dbname>
        <value>truevalue>
    property>
configuration>

启动Hive

1 初始化元数据库

1）登陆MySQL

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

2）新建Hive元数据库

mysql> create database metastore;
mysql> quit;

3）初始化Hive元数据库

[atguigu@hadoop102 software]$ schematool -initSchema -dbType mysql -verbose

2.5.2 启动metastore和hiveserver2
1）Hive 2.x以上版本，要先启动这两个服务，否则会报错：

FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

2）编写hive服务启动脚本

[atguigu@hadoop102 software]$ vim $HIVE_HOME/bin/hiveservices.sh

内容如下：

#!/bin/bash
HIVE_LOG_DIR=$HIVE_HOME/logs

mkdir -p $HIVE_LOG_DIR

#检查进程是否运行正常，参数1为进程名，参数2为进程端口
function check_process()
{
    pid=$(ps -ef 2>/dev/null | grep -v grep | grep -i $1 | awk '{print $2}')
    ppid=$(netstat -nltp 2>/dev/null | grep $2 | awk '{print $7}' | cut -d '/' -f 1)
    echo $pid
    [[ "$pid" =~ "$ppid" ]] && [ "$ppid" ] && return 0 || return 1
}

function hive_start()
{
    metapid=$(check_process HiveMetastore 9083)
    cmd="nohup hive --service metastore >$HIVE_LOG_DIR/metastore.log 2>&1 &"
    cmd=$cmd" sleep 4; hdfs dfsadmin -safemode wait >/dev/null 2>&1"
    [ -z "$metapid" ] && eval $cmd || echo "Metastroe服务已启动"
    server2pid=$(check_process HiveServer2 10000)
    cmd="nohup hive --service hiveserver2 >$HIVE_LOG_DIR/hiveServer2.log 2>&1 &"
    [ -z "$server2pid" ] && eval $cmd || echo "HiveServer2服务已启动"
}

function hive_stop()
{
    metapid=$(check_process HiveMetastore 9083)
    [ "$metapid" ] && kill $metapid || echo "Metastore服务未启动"
    server2pid=$(check_process HiveServer2 10000)
    [ "$server2pid" ] && kill $server2pid || echo "HiveServer2服务未启动"
}

case $1 in
"start")
    hive_start
    ;;
"stop")
    hive_stop
    ;;
"restart")
    hive_stop
    sleep 2
    hive_start
    ;;
"status")
    check_process HiveMetastore 9083 >/dev/null && echo "Metastore服务运行正常" || echo "Metastore服务运行异常"
    check_process HiveServer2 10000 >/dev/null && echo "HiveServer2服务运行正常" || echo "HiveServer2服务运行异常"
    ;;
*)
    echo Invalid Args!
    echo 'Usage: '$(basename $0)' start|stop|restart|status'
    ;;
esac

3）添加执行权限

[atguigu@hadoop102 software]$ chmod +x $HIVE_HOME/bin/hiveservices.sh

4）启动Hive后台服务

[atguigu@hadoop102 software]$ hiveservices.sh start

2.5.3 HiveJDBC访问
1）启动beeline客户端

[atguigu@hadoop102 software]$ beeline -u jdbc:hive2://hadoop102:10000 -n atguigu

2）看到如下界面

Connecting to jdbc:hive2://hadoop102:10000 Connected to: Apache Hive
(version 3.1.2) Driver: Hive JDBC (version 3.1.2) Transaction
isolation: TRANSACTION_REPEATABLE_READ Beeline version 3.1.2 by Apache
Hive 0: jdbc:hive2://hadoop102:10000>