Configuring Impala coordinator shutdown
To optimize resource utilization, you need to know how to configure Impala coordinators to automatically shutdown during idle periods. You need to know how to prevent unnecessary restarts. Monitoring programs that periodically connect to Impala can cause unnecessary restarts.
- Log in to the Data Warehouse service.
- Click under Virtual Warehouses to add a new Virtual Warehouse.
Select IMPALA as the SQL engine type.
- Select a database catalog, or accept the default.
Set User Groups that can access endpoints, keys, and
Tagging for the Virtual Warehouse.
- Select a size for the Virtual Warehouse.
Turn off Disable AutoSuspend.
The Impala coordinator does not automatically shutdown unless the Impala executors are suspended.
Turn on Allow Shutdown of Coordinator.
After Impala executors have been suspended, the Impala coordinator waits for the time period specified by the
Trigger Shutdown Delaybefore shutting down.
For example, if
AutoSuspend Timeout= 300 seconds and
Trigger Shutdown Delay=150 seconds, after 300 seconds of inactivity Impala executors suspend, and then 150 seconds later, the Impala coordinator shuts down.