Configuring a HetuEngine Maintenance Instance

Scenario

A maintenance instance is a special compute instance that performs automatic tasks. Maintenance instances are used to automatically refresh, create, and delete materialized views.

In a cluster, only one compute instance can be set as a maintenance instance, and the maintenance instance can also carry original computing services at the same time. If a tenant has multiple compute instances, only one compute instance can be used as the maintenance instance.

When you configure an existing compute instance as a maintenance instance, the status of the compute instance must be Stopped.

Procedure

1. Log in to FusionInsight Manager as a user who can access the HetuEngine web UI.
2. Choose Cluster > Services > HetuEngine to go its service page.
3. In the Basic Information area on the Dashboard page, click the link next to HSConsole WebUI. The HSConsole page is displayed.
4. In the Compute Instance page, locate the row that contains the tenant to which the target instance belongs and click Configure in the Operation column.
5. Check whether Maintenance Instance in Advanced Configuration is set to Yes. If not, change the value to Yes.
6. Set Start Now to Yes and click OK.