To resolve common issues, try one or more of the following steps.
- Check to see if there are any cores available in the cluster's location.
- Using the Scale cluster feature, calculate the number of additional cores needed for the cluster. This is based on the total number of cores in the new worker nodes.
- Take a look at the number of available cores in other locations. Consider recreating your cluster in a different location with enough available cores.
- If you'd like to increase the core quota for a specific location, please file a support ticket for an HDInsight core quota increase.