Managing session for SQL jobs

By default, the SQL Stream jobs are running in a session cluster. This means that multiple Flink jobs run in the same YARN session sharing the cluster, allocated resources, the Job Manager and Task Managers. The session starts when you open the Streaming SQL Console. You can reset the session, and set the properties of the session using the Streaming SQL Console.

Resetting a session

When you reset your session, every configuration, temporary table and view, default database and catalog will be lost.

Configuring properties for a session

You can configure the session properties using the SET statement in the SQL window.

  1. Use the SET statement in the SQL Editor to configure a session property.
    SET state.backend=rocksdb

    You can review all of the configurable parameters on the Properties tab of the Session window.

  2. Click Execute.