Restarting an instance is a common maintenance operation. For example, you may need to restart an instance after a system update or configuration change to apply the new settings.
Restarting an instance temporarily stops it, which can cause business interruptions. Perform this operation during off-peak hours. To prevent service disruptions, ensure your client applications have a retry mechanism.
Prerequisites
The instance must be in the Running state.
Procedure
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Navigate to the Instances page.
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Log on to the E-MapReduce console.
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In the navigation pane on the left, choose EMR Serverless > StarRocks.
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In the top navigation bar, select the region where your instance is located.
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On the Instances page, find the instance and click Restart in the Actions column.
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In the Confirmation dialog box, select a Restart Mode and click OK.
Restart mode
Description
Rolling Restart
This mode restarts the instance's nodes sequentially, keeping a subset online to maintain service availability. Choose this mode for scenarios that require high service continuity, as it minimizes business impact.
Quick Restart
This mode restarts the instance as quickly as possible.
Single-node Restart
Select this mode to restart a specific node instead of the entire instance.
You must specify the node type and the target node. For a Shared-data, if you restart a CN node, you can also specify a warehouse to narrow the restart scope.