Configuring hive under Ubuntu

1 Install MySQL

Steps to install mysql8.0 in ubuntu20.04_023's Xiao Chen's blog-CSDN blog

After installation:

First log in to mysql:

Create database hive

create database hive;

Create hive user:

create user 'hive'@'%' IDENTIFIED WITH mysql_native_password BY '123456789';

Authorization:

GRANT ALL PRIVILEGES ON *.* TO hive@'%' WITH GRANT OPTION;

#刷新权限
flush privileges;

Modify /etc/mysql/mysql.conf.d/mysqld.cnf

bind-address            = 0.0.0.0  #原127.0.0.1 修改为0.0.0.0
mysqlx-bind-address     = 127.0.0.1

Restart mysql service

sudo service mysql restart

2 Install hive

下载地址Index of /hivehttps://dlcdn.apache.org/hive/

1After decompression, rename it to hive

2Configure configuration environment variables

sudo vim ~/.bashrc

Add to

export HIVE_HOME=/usr/local/hive#自己的安装路径

export PATH=$PATH:${HIVE_HOME}/bin:${HIVE_HOME}/lib:

then

source ~/.bashrc

3 Enter ${HIVE_HOME}/conf:

Create hive-site.xml and add the following content:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
  <property>
 <!-- jdbc 连接的 URL -->
    <name>javax.jdo.option.ConnectionURL</name>
    <value>jdbc:mysql://hadoop200:3306/hive?createDatabaseIfNotExist=true&amp;useSSL=false&amp;allowPublicKeyRetrieval=true</value>
    <description>JDBC connect string for a JDBC metastore</description>
  </property>
<!-- jdbc 连接的 Driver-->
  <property>
    <name>javax.jdo.option.ConnectionDriverName</name>
    <value>com.mysql.cj.jdbc.Driver</value>
    <description>Driver class name for a JDBC metastore</description>
  </property>
<!-- jdbc 连接的 username-->
  <property>
    <name>javax.jdo.option.ConnectionUserName</name>
    <value>hive</value>
    <description>username to use against metastore database</description>
  </property>
 <!-- jdbc 连接的 password -->
  <property>
    <name>javax.jdo.option.ConnectionPassword</name>
    <value>123456789</value>
    <description>password to use against metastore database</description>
  </property>
  <property>
    <name>datanucleus.autoCreateTables</name>
    <value>True</value>
  </property>
<!-- Hive 元数据存储版本的验证 -->
  <property>
    <name>hive.metastore.schema.verification</name>
    <value>false</value>
  </property>
  <!--元数据存储授权-->
  <property>
    <name>hive.metastore.event.db.notification.api.auth</name>
    <value>false</value>
  </property>
  <!-- Hive 默认在 HDFS 的工作目录 -->
  <property>
    <name>hive.metastore.warehouse.dir</name>
    <value>/user/hive/warehouse</value>
  </property>
</configuration>

Then continue to create hive-env.sh in ${HIVE_HOME}/conf and add the following content:

export HADOOP_HOME=/usr/local/hadoop  #你自己的hadoop路径
export HIVE_CONF_DIR=/usr/local/hive/conf  #你自己的hive路径

Finally, move the downloaded and unzipped mysql driver jar package to ${HIVE_HOME}/lib

Download address:MySQL :: Download Connector/J

4Execute the following command under ${HIVE_HOME}/bin (run hdfs in advance):

schematool -dbType mysql -initSchema
schematool -dbType mysql -info
hive

5 Verify whether hive is configured properly

Start hive:

 Create the table to see if it succeeds:

 create table test1(id int, name string);

Show database:

show databases;