The auto scaling feature of E-MapReduce (EMR) helps you analyze changes to cluster resources and provides recommended auto scaling rules for you. This topic describes how to view the overview information about cluster resources in the EMR console.
Prerequisites
A DataLake cluster or a custom cluster is created and the YARN service is selected when you create the cluster. For more information, see Create a cluster.
Procedure
Go to the Auto Scaling tab.
Log on to the EMR console. In the left-side navigation pane, click EMR on ECS.
In the top navigation bar, select the region where your cluster resides and select a resource group based on your business requirements.
On the EMR on ECS page, find the desired cluster and click the name of the cluster in the Cluster ID/Name column.
On the page that appears, click the Auto Scaling tab.
On the Auto Scaling tab, you can view the overview information about cluster resources.
You can view the resource change curve of your cluster in the previous seven days and the related analysis results.
If your cluster resources have significant peaks and valleys, and no auto scaling rules are configured for your cluster, the system automatically recommends auto scaling rules for you. You can configure auto scaling rules for node groups in your cluster based on recommended rules. For more information, see Add auto scaling rules.