Expand the data disks attached to a node group in your EMR on ECS cluster to increase storage capacity.
Prerequisites
Before you begin, ensure that you have:
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A cluster created in the EMR console. For more information, see Create a cluster
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The target node group in the Running state
Limitations
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Only data disks can be expanded in the EMR console. System disk expansion is not supported.
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Supported disk types: enhanced SSDs, standard SSDs, and ultra disks. Local disks cannot be expanded.
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For Hadoop clusters, node groups created on the Auto Scaling tab cannot be scaled out. For more information, see Configure auto scaling (only for Hadoop clusters).
Disk expansion is irreversible. Once expanded, a cloud disk cannot be reduced in size. Check your current disk usage and plan the required capacity before you proceed.
Expand a data disk
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Log on to the EMR console. In the left-side navigation pane, click EMR on ECS.
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In the top navigation bar, select the region where your cluster resides and select a resource group.
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On the EMR on ECS page, find the target cluster and click Nodes in the Actions column.
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On the Nodes tab, find the node group whose data disks you want to expand and click Expand Disk in the Actions column.
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In the Expand Disk dialog box, set the new size for each data disk.
Note The new size must be greater than the current size. -
Click OK.
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In the Disk Information column of the node group, confirm that the disk size has updated.
Note If the size does not update, restart the ECS instance that uses the disk.