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[Bug 2028518] [NEW] nova scheduler debug logs TypeError

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Public bug reported:

Description
===========

while activating nova scheduler logs for debugging I face this issue creating a new vm.
The vm is created anyway.


Steps to reproduce
==================
1. set debug in nova-scheduler to ture
 [DEFAULT]
 debug = true
2. create a vm
3. look into a nova-scheduler logs


Expected result
===============
debug log should shown without any stacktraces

Actual result
=============
an error/stacktrace is thrown

Environment
===========

Openstack: Yoga
Python: Python 3.10.6

Logs & Configs
==============
Stacktrace:
Traceback (most recent call last):
  File "/usr/lib/python3.10/logging/__init__.py", line 1100, in emit
    msg = self.format(record)
  File "/usr/local/lib/python3.10/dist-packages/oslo_log/handlers.py", line 156, in format
    return logging.StreamHandler.format(self, record) + record.reset_color
  File "/usr/lib/python3.10/logging/__init__.py", line 943, in format
    return fmt.format(record)
  File "/usr/local/lib/python3.10/dist-packages/oslo_log/formatters.py", line 271, in format
    return _json_dumps_with_fallback(message)
  File "/usr/local/lib/python3.10/dist-packages/oslo_log/formatters.py", line 181, in _json_dumps_with_fallback
    return jsonutils.dumps(obj, default=convert)
  File "/usr/local/lib/python3.10/dist-packages/oslo_serialization/jsonutils.py", line 202, in dumps
    return json.dumps(obj, default=default, **kwargs)
  File "/usr/lib/python3.10/json/__init__.py", line 238, in dumps
    **kw).encode(obj)
  File "/usr/lib/python3.10/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.10/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
TypeError: keys must be str, int, float, bool or None, not tuple
Call stack:
  File "/usr/local/lib/python3.10/dist-packages/eventlet/greenpool.py", line 88, in _spawn_n_impl
    func(*args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/futurist/_green.py", line 71, in __call__
    self.work.run()
  File "/usr/local/lib/python3.10/dist-packages/futurist/_utils.py", line 49, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming
    res = self.dispatcher.dispatch(message)
  File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch
    return self._do_dispatch(endpoint, method, ctxt, args)
  File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch
    result = func(ctxt, **new_args)
  File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/server.py", line 241, in inner
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 223, in select_destinations
    selections = self._select_destinations(
  File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 250, in _select_destinations
    selections = self._schedule(
  File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 360, in _schedule
    hosts = self._get_sorted_hosts(spec_obj, hosts, num)
  File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 615, in _get_sorted_hosts
    weighed_hosts = self.host_manager.get_weighed_hosts(
  File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/host_manager.py", line 606, in get_weighed_hosts
    return self.weight_handler.get_weighed_objects(self.weighers,
  File "/usr/local/lib/python3.10/dist-packages/nova/weights.py", line 136, in get_weighed_objects
    LOG.debug(
Message: '%s: raw weights %s'
Arguments: ('CPUWeigher', {('compute-01', 'compute-01): 127.0, ('worker-01', 'worker-01'): 125.0})

** Affects: nova
     Importance: Undecided
         Status: New

** Patch added: "weights.py.patch"
   https://bugs.launchpad.net/bugs/2028518/+attachment/5688029/+files/weights.py.patch

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https://bugs.launchpad.net/bugs/2028518

Title:
  nova scheduler debug logs TypeError

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========

  while activating nova scheduler logs for debugging I face this issue creating a new vm.
  The vm is created anyway.

  
  Steps to reproduce
  ==================
  1. set debug in nova-scheduler to ture
   [DEFAULT]
   debug = true
  2. create a vm
  3. look into a nova-scheduler logs

  
  Expected result
  ===============
  debug log should shown without any stacktraces

  Actual result
  =============
  an error/stacktrace is thrown

  Environment
  ===========

  Openstack: Yoga
  Python: Python 3.10.6

  Logs & Configs
  ==============
  Stacktrace:
  Traceback (most recent call last):
    File "/usr/lib/python3.10/logging/__init__.py", line 1100, in emit
      msg = self.format(record)
    File "/usr/local/lib/python3.10/dist-packages/oslo_log/handlers.py", line 156, in format
      return logging.StreamHandler.format(self, record) + record.reset_color
    File "/usr/lib/python3.10/logging/__init__.py", line 943, in format
      return fmt.format(record)
    File "/usr/local/lib/python3.10/dist-packages/oslo_log/formatters.py", line 271, in format
      return _json_dumps_with_fallback(message)
    File "/usr/local/lib/python3.10/dist-packages/oslo_log/formatters.py", line 181, in _json_dumps_with_fallback
      return jsonutils.dumps(obj, default=convert)
    File "/usr/local/lib/python3.10/dist-packages/oslo_serialization/jsonutils.py", line 202, in dumps
      return json.dumps(obj, default=default, **kwargs)
    File "/usr/lib/python3.10/json/__init__.py", line 238, in dumps
      **kw).encode(obj)
    File "/usr/lib/python3.10/json/encoder.py", line 199, in encode
      chunks = self.iterencode(o, _one_shot=True)
    File "/usr/lib/python3.10/json/encoder.py", line 257, in iterencode
      return _iterencode(o, 0)
  TypeError: keys must be str, int, float, bool or None, not tuple
  Call stack:
    File "/usr/local/lib/python3.10/dist-packages/eventlet/greenpool.py", line 88, in _spawn_n_impl
      func(*args, **kwargs)
    File "/usr/local/lib/python3.10/dist-packages/futurist/_green.py", line 71, in __call__
      self.work.run()
    File "/usr/local/lib/python3.10/dist-packages/futurist/_utils.py", line 49, in run
      result = self.fn(*self.args, **self.kwargs)
    File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming
      res = self.dispatcher.dispatch(message)
    File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch
      return self._do_dispatch(endpoint, method, ctxt, args)
    File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch
      result = func(ctxt, **new_args)
    File "/usr/local/lib/python3.10/dist-packages/oslo_messaging/rpc/server.py", line 241, in inner
      return func(*args, **kwargs)
    File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 223, in select_destinations
      selections = self._select_destinations(
    File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 250, in _select_destinations
      selections = self._schedule(
    File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 360, in _schedule
      hosts = self._get_sorted_hosts(spec_obj, hosts, num)
    File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/manager.py", line 615, in _get_sorted_hosts
      weighed_hosts = self.host_manager.get_weighed_hosts(
    File "/usr/local/lib/python3.10/dist-packages/nova/scheduler/host_manager.py", line 606, in get_weighed_hosts
      return self.weight_handler.get_weighed_objects(self.weighers,
    File "/usr/local/lib/python3.10/dist-packages/nova/weights.py", line 136, in get_weighed_objects
      LOG.debug(
  Message: '%s: raw weights %s'
  Arguments: ('CPUWeigher', {('compute-01', 'compute-01): 127.0, ('worker-01', 'worker-01'): 125.0})

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