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 2.2. Using Hive with MySQL

To set up MySQL for use with Hive:

  1. On the Ambari Server host, stage the appropriate MySQL connector for later deployment.

    1. Install the connector.

      RHEL/CentOS/Oracle Linux

      yum install mysql-connector-java*

      SLES

      zypper install mysql-connector-java*

      Ubuntu

      apt-get install mysql-connector-java*

    2. Confirm that mysql-connector-java.jar is in the Java share directory.

      ls /usr/share/java/mysql-connector-java.jar

    3. Make sure the .jar file has the appropriate permissions - 644.

    4. Execute the following command:

      ambari-server setup --jdbc-db=mysql --jdbc-driver=/usr/share/java/mysql-connector-java.jar

  2. Create a user for Hive and grant it permissions.

    • Using the MySQL database admin utility:

      # mysql -u root -p CREATE USER ‘<HIVEUSER>’@’localhost’ IDENTIFIED BY ‘<HIVEPASSWORD>’;

      GRANT ALL PRIVILEGES ON *.* TO '<HIVEUSER>'@'localhost';

      CREATE USER ‘<HIVEUSER>’@’%’ IDENTIFIED BY ‘<HIVEPASSWORD>’;

      GRANT ALL PRIVILEGES ON *.* TO '<HIVEUSER>'@'%';

      CREATE USER '<HIVEUSER>'@'<HIVEMETASTOREFQDN>'IDENTIFIED BY '<HIVEPASSWORD>';

      GRANT ALL PRIVILEGES ON *.* TO '<HIVEUSER>'@'<HIVEMETASTOREFQDN>';

      FLUSH PRIVILEGES;

    • Where <HIVEUSER> is the Hive user name, <HIVEPASSWORD> is the Hive user password and <HIVEMETASTOREFQDN> is the Fully Qualified Domain Name of the Hive Metastore host.

  3. Create the Hive database.

    The Hive database must be created before loading the Hive database schema.

    # mysql -u root -p CREATE DATABASE <HIVEDATABASE>

    Where <HIVEDATABASE> is the Hive database name.

  4. Load the Hive database schema.

    • For a HDP 2.2 Stack:

      [Important]Important

      Ambari sets up the Hive Metastore database schema automatically.

      You do not need to pre-load the Hive Metastore database schema into your MySQL database for a HDP 2.2 Stack.

    • For a HDP 2.1 Stack:

      You must pre-load the Hive database schema into your MySQL database using the schema script, as follows. mysql -u root -p <HIVEDATABASE> hive-schema-0.13.0.mysql.sql

      Find the hive-schema-0.13.0.mysql.sql file in the /var/lib/ambari-server/resources/stacks/HDP/2.1/services/HIVE/etc/ directory of the Ambari Server host after you have installed Ambari Server.

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