Revert "fix some tests."

This reverts commit 01e492a.

python/ray/_private/node.py

@@ -101,8 +101,7 @@ def __init__(
  if head and storage_namespace is None:
  raise ValueError(
  "RAY_external_storage_namespace must be provided "
- "when using Ray with external Redis via `RAY_REDIS_ADDRESS` "
- " for the fault tolerance. "
+ "when using Ray with external Redis for the fault tolerance. "
  "RAY_external_storage_namespace must be an unique ID "
  "and has to be the same across the same head node."
  )

python/ray/tests/test_advanced_9.py

@@ -1,6 +1,5 @@
 import sys
 import time
-import uuid
 
 import pytest
 
@@ -358,7 +357,6 @@ def check_demands(n):
 def test_redis_not_available(monkeypatch, call_ray_stop_only):
  monkeypatch.setenv("RAY_NUM_REDIS_GET_RETRIES", "2")
  monkeypatch.setenv("RAY_REDIS_ADDRESS", "localhost:12345")
- monkeypatch.setenv("RAY_external_storage_namespace", str(uuid.uuid4()))
  p = subprocess.run(
  "ray start --head",
  shell=True,

python/ray/tests/test_multi_node_3.py

@@ -2,7 +2,6 @@
 import os
 import subprocess
 import sys
-import uuid
 from pathlib import Path
 
 import psutil
@@ -136,12 +135,10 @@ def test_calling_start_ray_head(call_ray_stop_only):
  temp_dir, 8888, password=ray_constants.REDIS_DEFAULT_PASSWORD
  )
  os.environ["RAY_REDIS_ADDRESS"] = "127.0.0.1:8888"
- os.environ["RAY_external_storage_namespace"] = str(uuid.uuid4())
  check_call_ray(["start", "--head"])
  check_call_ray(["stop"])
  proc.process.terminate()
  del os.environ["RAY_REDIS_ADDRESS"]
- del os.environ["RAY_external_storage_namespace"]
 
  # Test --block. Killing a child process should cause the command to exit.
  blocked = subprocess.Popen(["ray", "start", "--head", "--block", "--port", "0"])