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 2.3. Using Hive with PostgreSQL

To set up PostgreSQL for use with Hive:

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

    1. Install the connector.

      RHEL/CentOS/Oracle Linux

      yum install postgresql-jdbc*

      SLES

      zypper install -y postgresql-jdbc

    2. Copy the connector.jar file to the Java share directory.

      cp /usr/share/pgsql/postgresql-*.jdbc3.jar /usr/share/java/postgresql-jdbc.jar

    3. Confirm that .jar is in the Java share directory.

      ls /usr/share/java/postgresql-jdbc.jar

    4. Change the access mode of the.jar file to 644.

      chmod 644 /usr/share/java/postgresql-jdbc.jar

    5. Execute the following command:

      ambari-server setup --jdbc-db=postgres--jdbc-driver=/usr/share/java/postgresql-jdbc.jar

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

    • Using the PostgreSQL database admin utility:

      echo "CREATE DATABASE <HIVEDATABASE>;" | psql -U postgres echo "CREATE USER <HIVEUSER> WITH PASSWORD '<HIVEPASSWORD>';" | psql -U postgres

      echo "GRANT ALL PRIVILEGES ON DATABASE <HIVEDATABASE> TO <HIVEUSER>;" | psql -U postgres

    • Where <HIVEUSER> is the Hive user name, <HIVEPASSWORD> is the Hive user password and <HIVEDATABASE> is the Hive database name.

  3. 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 PostgreSQL database for a HDP 2.2 Stack.

    • For a HDP 2.1 Stack:

      You must pre-load the Hive database schema into your PostgreSQL database using the schema script, as follows:

      # psql -U <HIVEUSER> -d <HIVEDATABASE> \connect <HIVEDATABASE>; \i hive-schema-0.13.0.postgres.sql;

      Find the hive-schema-0.13.0.postgres.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.

    • For a HDP 2.0 Stack:

      You must pre-load the Hive database schema into your PostgreSQL database using the schema script, as follows:

      # sudo -u postgres psql \connect <HIVEDATABASE>; \i hive-schema-0.12.0.postgres.sql;

      Find the hive-schema-0.12.0.postgres.sql file in the /var/lib/ambari-server/resources/stacks/HDP/2.0.6/services/HIVE/etc/ directory of the Ambari Server host after you have installed Ambari Server.

    • For a HDP 1.3 Stack:

      You must pre-load the Hive database schema into your PostgreSQL database using the schema script, as follows:

      # sudo -u postgres psql \connect <HIVEDATABASE>; \i hive-schema-0.10.0.postgres.sql;

      Find the hive-schema-0.10.0.postgres.sql file in the /var/lib/ambari-server/resources/stacks/HDP/1.3.2/services/HIVE/etc/ directory of the Ambari Server host after you have installed Ambari Server.

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