High severitycluster
Power BI Refresh Error:
AWS_INSUFFICIENT_INSTANCE_CAPACITY_FAILURE
What does this error mean?
AWS does not have enough capacity for the requested EC2 instance type in the selected availability zone. This is a cloud provider capacity issue — Databricks cannot launch the cluster until AWS has available instances.
Common causes
- 1High demand for the selected instance type in the target AWS region or AZ
- 2GPU or memory-optimized instances are especially prone to capacity shortages
- 3Spot instance capacity is depleted in the AZ at the requested price
- 4A regional event (e.g., other large customers scaling up) exhausted AZ capacity
How to fix it
- 1Configure the cluster to use multiple availability zones so Databricks can fall back to another AZ
- 2Switch to an alternative instance type with similar specs (e.g., r5.4xlarge instead of r5.2xlarge)
- 3Use an instance pool with multiple instance types to improve capacity availability
- 4For spot clusters, configure on-demand fallback
- 5Check the AWS capacity dashboard or service health dashboard for ongoing capacity events