Revert "[autoscaler] Better validation for min_workers and max_workers (#13779)" (#13807)

This reverts commit 4d6817c683.

python/ray/autoscaler/_private/util.py

@@ -86,14 +86,6 @@ def validate_config(config: Dict[str, Any]) -> None:
             raise ValueError(
                 "`head_node_type` must be one of `available_node_types`.")
 
-        sum_min_workers = sum(
-            config["available_node_types"][node_type].get("min_workers", 0)
-            for node_type in config["available_node_types"])
-        if sum_min_workers > config["max_workers"]:
-            raise ValueError(
-                "The specified global `max_workers` is smaller than the "
-                "sum of `min_workers` of all the available node types.")
-
 
 def prepare_config(config):
     with_defaults = fillout_defaults(config)

python/ray/tests/test_autoscaler_yaml.py

@@ -45,31 +45,6 @@ class AutoscalingConfigTest(unittest.TestCase):
             except Exception:
                 self.fail("Config did not pass validation test!")
 
-    def testValidateDefaultConfigMinMaxWorkers(self):
-        aws_config_path = os.path.join(
-            RAY_PATH, "autoscaler/aws/example-multi-node-type.yaml")
-        with open(aws_config_path) as f:
-            config = yaml.safe_load(f)
-        config = prepare_config(config)
-        for node_type in config["available_node_types"]:
-            config["available_node_types"][node_type]["resources"] = config[
-                "available_node_types"][node_type].get("resources", {})
-        try:
-            validate_config(config)
-        except Exception:
-            self.fail("Config did not pass validation test!")
-
-        config["max_workers"] = 0  # the sum of min_workers is 1.
-        with pytest.raises(ValueError):
-            validate_config(config)
-
-        # make sure edge case of exactly 1 passes too.
-        config["max_workers"] = 1
-        try:
-            validate_config(config)
-        except Exception:
-            self.fail("Config did not pass validation test!")
-
     @pytest.mark.skipif(
         sys.platform.startswith("win"),
         reason="TODO(ameer): fails on Windows.")