Remove unnecessary handling of setproctitle and psutil. (#7702)

ci/travis/test-wheels.sh

@@ -48,7 +48,7 @@ if [[ "$platform" == "linux" ]]; then
  $PYTHON_EXE "$TEST_SCRIPT"
 
  # Run the UI test to make sure that the packaged UI works.
- $PIP_CMD install -q aiohttp google grpcio psutil requests setproctitle
+ $PIP_CMD install -q aiohttp google grpcio requests
  $PYTHON_EXE "$UI_TEST_SCRIPT"
 
  # Check that the other wheels are present.
@@ -88,7 +88,7 @@ elif [[ "$platform" == "macosx" ]]; then
 
  if (( $(echo "$PY_MM >= 3.0" | bc) )); then
  # Run the UI test to make sure that the packaged UI works.
- $PIP_CMD install -q aiohttp google grpcio psutil requests setproctitle
+ $PIP_CMD install -q aiohttp google grpcio requests
  $PYTHON_EXE "$UI_TEST_SCRIPT"
  fi
 

doc/requirements-doc.txt

@@ -11,11 +11,9 @@ opencv-python-headless
 pandas
 pickle5
 pygments
-psutil
 pyyaml
 recommonmark
 redis
-setproctitle
 sphinx
 sphinx-click
 sphinx-copybutton

doc/source/installation.rst

@@ -158,13 +158,6 @@ via pip.
 
  pip install ray[dashboard]
 
-If you are using Anaconda and have trouble installing ``psutil`` or
-``setproctitle``, the try
-
-.. code-block:: bash
-
- conda install psutil setproctitle
-
 The command ``ray.init()`` or ``ray start --head`` will print out the address of
 the dashboard. For example,
 

python/ray/exceptions.py

@@ -41,10 +41,8 @@ def __init__(self,
  """Initialize a RayTaskError."""
  if proctitle:
  self.proctitle = proctitle
- elif setproctitle:
- self.proctitle = setproctitle.getproctitle()
  else:
- self.proctitle = "ray_worker"
+ self.proctitle = setproctitle.getproctitle()
  self.pid = pid or os.getpid()
  self.ip = ip or ray.services.get_node_ip_address()
  self.function_name = function_name

python/ray/services.py

@@ -1102,7 +1102,7 @@ def start_dashboard(require_webui,
  webui_dependencies_present = False
  warning_message = (
  "Failed to start the dashboard. The dashboard requires Python 3 "
- "as well as 'pip install aiohttp psutil setproctitle grpcio'.")
+ "as well as 'pip install aiohttp grpcio'.")
  if require_webui:
  raise ImportError(warning_message)
  else:

python/ray/worker.py

@@ -677,12 +677,6 @@ def init(address=None,
  else:
  driver_mode = SCRIPT_MODE
 
- if setproctitle is None:
- logger.warning(
- "WARNING: Not updating worker name since `setproctitle` is not "
- "installed. Install this with `pip install setproctitle` "
- "(or ray[debug]) to enable monitoring of worker processes.")
-
  if global_worker.connected:
  if ignore_reinit_error:
  logger.error("Calling ray.init() again after it has already been "
@@ -1142,8 +1136,7 @@ def connect(node,
  job_id = JobID.nil()
  # TODO(qwang): Rename this to `worker_id_str` or type to `WorkerID`
  worker.worker_id = _random_string()
- if setproctitle:
- setproctitle.setproctitle("ray::IDLE")
+ setproctitle.setproctitle("ray::IDLE")
  elif mode is LOCAL_MODE:
  if job_id is None:
  job_id = JobID.from_int(random.randint(1, 65535))
@@ -1369,11 +1362,9 @@ def disconnect(exiting_interpreter=False):
 
 @contextmanager
 def _changeproctitle(title, next_title):
- if setproctitle:
- setproctitle.setproctitle(title)
+ setproctitle.setproctitle(title)
  yield
- if setproctitle:
- setproctitle.setproctitle(next_title)
+ setproctitle.setproctitle(next_title)
 
 
 def register_custom_serializer(cls,