>>> $CLI bundle validate -o json -t default
{
  "autoscale": {
    "max_workers": 7,
    "min_workers": 2
  },
  "cluster_name": "foo",
  "custom_tags": {},
  "node_type_id": "i3.xlarge",
  "num_workers": 2,
  "spark_conf": {
    "spark.executor.memory": "2g"
  },
  "spark_version": "13.3.x-scala2.12"
}

>>> $CLI bundle validate -o json -t development
{
  "autoscale": {
    "max_workers": 3,
    "min_workers": 1
  },
  "cluster_name": "foo-override",
  "custom_tags": {},
  "node_type_id": "m5.xlarge",
  "num_workers": 3,
  "spark_conf": {
    "spark.executor.memory": "4g",
    "spark.executor.memory2": "4g"
  },
  "spark_version": "15.2.x-scala2.12"
}