You can interact with the Hive Metastore via the Beeline CLI.

Using MySQL Database

• Please make sure the Hive Metastore & MySQL services are deployed and successfully runnning.

• Find the load balanced address for MySQL. You will need this to set up the connection with Beeline. You can find the LB address in the DC/OS UI under the Services > mysql > Endpoints tab. It should look similar to:

  mysql.marathon.l4lb.thisdcos.directory:3306
  

• Next, find the task-id for the node-0-server task of hive-metastore. It starts with <Hive-Metastore Service name>__node-0-server.

  dcos task | grep node-0-server
  

• Exec into the node-0-server task with the following command:

  dcos task exec -ti <NODE_0_SERVER_TASK_ID> bash -c \
    'export HADOOP_HOME=hadoop-3.2.0 \
    && export JAVA_HOME=$(ls -d jdk*) \
    && export HIVE_HOME=$(ls -d apache-hive-metastore-*) \
    && bash apache-hive-metastore-3.0.0-bin/bin/beeline \
    -u jdbc:mysql://<MYSQL_LOAD_BALANCED_ADDRESS> \
    -n root \
    -p root'
  

• Lastly, use the metastore database.

  use metastore_db;
  

NOTE: See detailed documentation for using dcos task exec.

Reconnecting an inactive session

In the Beeline prompt, type !reconnect and it will reconnect to MySQL.

!reconnect

Ending an active session

In the Beeline prompt, type !quit and it will end the session.

!quit

Basic Beeline Queries

Beeline supports a rich set of SQL query functions. Few examples:

SHOW DATABASES;
USE <database>;

SHOW TABLES;
DESC <table>;
DESC FORMATTED <table>;

Simple limited select statements

SELECT * FROM <TABLE_NAME> limit 25;

For a list of all Beeline commands, see the Beeline docs.