Hive3安装

1、下载安装包

地址：http://archive.apache.org/dist/hive/

2、安装mysql

参考：https://www.cnblogs.com/jpxjx/p/16817724.html

3、上传安装包并解压

tar zxvf apache-hive-3.1.2-bin.tar.gz

 4、解决Hive与Hadoop之间guava版本差异

cd /root/export/server/apache-hive-3.1.2-bin/
rm -rf lib/guava-19.0.jar
cp /root/export/server/hadoop-3.3.5/share/hadoop/common/lib/guava-27.0-jre.jar ./lib/

5、修改配置文件

5.1、hive-env.sh

cd /root/export/server/apache-hive-3.1.2-bin/conf
mv hive-env.sh.template hive-env.sh

vi hive-env.sh
export HADOOP_HOME=/root/export/server/hadoop-3.3.5
export HIVE_CONF_DIR=/root/export/server/apache-hive-3.1.2-bin/conf
export HIVE_AUX_JARS_PATH=/root/export/server/apache-hive-3.1.2-bin/lib

5.2、hive-site.xml

touch hive-site.xml

vi hive-site.xml

<configuration>
<!-- 存储元数据mysql相关配置 -->
<property>
    <name>javax.jdo.option.ConnectionURL</name>
    <value>jdbc:mysql://hadoop:3306/hive3?createDatabaseIfNotExist=true&amp;useSSL=false&amp;useUnicode=true&amp;characterEncoding=UTF-8</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>hadoop</value>
</property>

<!-- H2S运行绑定host -->
<property>
    <name>hive.server2.thrift.bind.host</name>
    <value>hadoop</value>
</property>

<!-- 远程模式部署metastore metastore地址 -->
<property>
    <name>hive.metastore.uris</name>
    <value>thrift://hadoop:9083</value>
</property>

<!-- 关闭元数据存储授权  --> 
<property>
    <name>hive.metastore.event.db.notification.api.auth</name>
    <value>false</value>
</property>
</configuration>

5.3、上传mysql jdbc驱动到hive安装包lib下

mysql-connector-j-8.0.32.jar

5.4、初始化元数据

cd /root/export/server/apache-hive-3.1.2-bin/

bin/schematool -initSchema -dbType mysql -verbos
#初始化成功会在mysql中创建74张表

6、在hdfs创建hive存储目录（如存在则不用操作）

hadoop fs -mkdir /tmp
hadoop fs -mkdir -p /user/hive/warehouse
hadoop fs -chmod g+w /tmp
hadoop fs -chmod g+w /user/hive/warehouse

7、启动hive

7.1、启动metastore服务

#前台启动  关闭ctrl+c
/root/export/server/apache-hive-3.1.2-bin/bin/hive --service metastore

#前台启动开启debug日志
/root/export/server/apache-hive-3.1.2-bin/bin/hive --service metastore --hiveconf hive.root.logger=DEBUG,console  

#后台启动 进程挂起  关闭使用jps+ kill -9
nohup /root/export/server/apache-hive-3.1.2-bin/bin/hive --service metastore &

7.2、启动hiveserver2服务

 nohup /root/export/server/apache-hive-3.1.2-bin/bin/hive --service hiveserver2 &

  #注意 启动hiveserver2需要一定的时间  不要启动之后立即beeline连接 可能连接不上

8、beeline客户端连接

8.1、拷贝hadoop安装包到beeline客户端机器上（hadoop02）

scp -r /root/export/server/apache-hive-3.1.2-bin/ hadoop02:/root/export/server/

8.2、连接访问

/root/export/server/apache-hive-3.1.2-bin/bin/beeline

beeline> ! connect jdbc:hive2://hadoop:10000
beeline> root
beeline> 直接回车