Mesh object not updating fast enough (Race condition)

[germa89]

Before submitting the issue

• I have searched among the existing issues
• I am using a Python virtual environment
• I have a fully updated virtual environment (i.e. pip install --upgrade --upgrade-strategy eager ansys-mapdl-core)

Description of the bug

Problem

I have seen this test failing quite a lot:

=================================== FAILURES ===================================
____________________________ test_empty_mesh[False] ____________________________

mapdl = <ansys.mapdl.core.mapdl_grpc.MapdlGrpc object at 0x7f59e7ded400>
cleared = None

    def test_empty_mesh(mapdl, cleared):
        assert mapdl.mesh.n_node == 0
        assert mapdl.mesh.n_elem == 0
        assert mapdl.mesh.nnum_all.size == 0
        assert mapdl.mesh.enum_all.size == 0
        assert mapdl.mesh.nnum.size == 0
        assert mapdl.mesh.enum.size == 0
        assert mapdl.mesh.nodes.size == 0
        # assert mapdl.mesh.node_angles.size == 0 Not implemented
    
        # elem is a list
        assert len(mapdl.mesh.elem) == 0
    
        # Using size because it should be empty arrays
        assert mapdl.mesh.ekey.size == 0
        assert mapdl.mesh.et_id.size == 0
        assert mapdl.mesh.tshape.size == 0
        assert mapdl.mesh.material_type.size == 0
        assert mapdl.mesh.etype.size == 0
        assert mapdl.mesh.section.size == 0
        assert mapdl.mesh.element_coord_system.size == 0
        assert mapdl.mesh.elem_real_constant.size == 0
        assert mapdl.mesh.ekey.size == 0
    
        # should be empty dicts
        assert not mapdl.mesh.key_option
        assert not mapdl.mesh.tshape_key
        assert not mapdl.mesh.element_components
        assert not mapdl.mesh.node_components
    
        # bools
>       assert not mapdl.mesh._has_elements

tests/test_mesh_grpc.py:90: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = ANSYS Mesh
  Number of Nodes:              0
  Number of Elements:           0
  Number of Element Types:      0
  Number of Node Components:    0
  Number of Element Components: 0


    @property
    def _has_elements(self):
        """Returns True when geometry has elements"""
>       return self._elem.size != 0
E       AttributeError: 'NoneType' object has no attribute 'size'

/opt/hostedtoolcache/Python/3.8.13/x64/lib/python3.8/site-packages/ansys/mapdl/core/mesh_grpc.py:89: AttributeError

Run: https://github.com/pyansys/pymapdl/runs/8184714817?check_suite_focus=true

Call to self._elem sometimes return None, I presume that it is because of a race conditions. self._elem is updated in a thread, and although, we wait for it to finish (join), it might not finish the thread or write the attribute soon enough.

Steps To Reproduce

It happens sometimes, not always.

Check:
https://github.com/pyansys/pymapdl/runs/8184714817?check_suite_focus=true

Which Operating System are you using?

No response

Which Python version are you using?

No response

PyMAPDL Report

NA

Installed packages

NA