id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
484955475,MDU6SXNzdWU0ODQ5NTU0NzU=,3263,test_sparse doesn't work with pytest-xdist,2448579,closed,0,,,0,2019-08-25T17:30:51Z,2020-12-17T22:33:46Z,2020-12-17T22:33:46Z,MEMBER,,,,"`pytest -n 4 test_sparse.py` results in

```
====================================================================================== ERRORS ======================================================================================
_______________________________________________________________________________ ERROR collecting gw0 _______________________________________________________________________________
Different tests were collected between gw1 and gw0. The difference is:
--- gw1

+++ gw0

@@ -11,7 +11,7 @@

 xarray/tests/test_sparse.py::test_variable_method[obj.any(*(), **{})-False]
 xarray/tests/test_sparse.py::test_variable_method[obj.astype(*(), **{'dtype': <class 'int'>})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.clip(*(), **{'min': 0, 'max': 1})-True]
-xarray/tests/test_sparse.py::test_variable_method[obj.coarsen(*(), **{'windows': {'x': 2}, 'func': <function sum at 0x7fc7303f7d08>})-True]
+xarray/tests/test_sparse.py::test_variable_method[obj.coarsen(*(), **{'windows': {'x': 2}, 'func': <function sum at 0x7f6009fa4d08>})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.compute(*(), **{})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.conj(*(), **{})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.copy(*(), **{})-True]
@@ -49,7 +49,7 @@

 xarray/tests/test_sparse.py::test_variable_method[obj.prod(*(), **{})-False]
 xarray/tests/test_sparse.py::test_variable_method[obj.quantile(*(), **{'q': 0.5})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.rank(*(), **{'dim': 'x'})-False]
-xarray/tests/test_sparse.py::test_variable_method[obj.reduce(*(), **{'func': <function sum at 0x7fc7303f7d08>, 'dim': 'x'})-True]
+xarray/tests/test_sparse.py::test_variable_method[obj.reduce(*(), **{'func': <function sum at 0x7f6009fa4d08>, 'dim': 'x'})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.rolling_window(*(), **{'dim': 'x', 'window': 2, 'window_dim': 'x_win'})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.shift(*(), **{'x': 2})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.std(*(), **{})-False]
@@ -144,11 +144,11 @@

 xarray/tests/test_sparse.py::test_dataarray_method[obj.median(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.min(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.notnull(*(), **{})-False]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.pipe(*(<function sum at 0x7fc7303f7d08>,), **{'axis': 1})-True]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.pipe(*(<function sum at 0x7f6009fa4d08>,), **{'axis': 1})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.prod(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.quantile(*(), **{'q': 0.5})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.rank(*('x',), **{})-False]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.reduce(*(<function sum at 0x7fc7303f7d08>,), **{'dim': 'x'})-False]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.reduce(*(<function sum at 0x7f6009fa4d08>,), **{'dim': 'x'})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.reindex_like(*(<xarray.DataArray 'test' (x: 10, y: 5)>\n<COO: shape=(10, 5), dtype=float64, nnz=5, fill_value=0.0>\nCoordinates:\n  * x        (x) float64 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5\n  * y        (y) float64 0.5 1.5 2.5 3.5 4.5,), **{})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.roll(*(), **{'x': 2})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.sel(*(), **{'x': [0, 1, 2], 'y': [2, 3]})-True]
_______________________________________________________________________________ ERROR collecting gw2 _______________________________________________________________________________
Different tests were collected between gw1 and gw2. The difference is:
--- gw1

+++ gw2

@@ -11,7 +11,7 @@

 xarray/tests/test_sparse.py::test_variable_method[obj.any(*(), **{})-False]
 xarray/tests/test_sparse.py::test_variable_method[obj.astype(*(), **{'dtype': <class 'int'>})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.clip(*(), **{'min': 0, 'max': 1})-True]
-xarray/tests/test_sparse.py::test_variable_method[obj.coarsen(*(), **{'windows': {'x': 2}, 'func': <function sum at 0x7fc7303f7d08>})-True]
+xarray/tests/test_sparse.py::test_variable_method[obj.coarsen(*(), **{'windows': {'x': 2}, 'func': <function sum at 0x7f657c314d08>})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.compute(*(), **{})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.conj(*(), **{})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.copy(*(), **{})-True]
@@ -49,7 +49,7 @@

 xarray/tests/test_sparse.py::test_variable_method[obj.prod(*(), **{})-False]
 xarray/tests/test_sparse.py::test_variable_method[obj.quantile(*(), **{'q': 0.5})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.rank(*(), **{'dim': 'x'})-False]
-xarray/tests/test_sparse.py::test_variable_method[obj.reduce(*(), **{'func': <function sum at 0x7fc7303f7d08>, 'dim': 'x'})-True]
+xarray/tests/test_sparse.py::test_variable_method[obj.reduce(*(), **{'func': <function sum at 0x7f657c314d08>, 'dim': 'x'})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.rolling_window(*(), **{'dim': 'x', 'window': 2, 'window_dim': 'x_win'})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.shift(*(), **{'x': 2})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.std(*(), **{})-False]
@@ -118,7 +118,7 @@

 xarray/tests/test_sparse.py::test_dataarray_method[obj.sel(*(), **{'x': [0, 1, 2]})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.shift(*(), **{})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.sortby(*('x',), **{'ascending': False})-True]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.stack(*(), **{'z': {'y', 'x'}})-True]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.stack(*(), **{'z': {'x', 'y'}})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.transpose(*(), **{})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.broadcast_equals(*(<xarray.Variable (x: 10, y: 5)>\n<COO: shape=(10, 5), dtype=float64, nnz=5, fill_value=0.0>,), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.equals(*(<xarray.Variable (x: 10, y: 5)>\n<COO: shape=(10, 5), dtype=float64, nnz=5, fill_value=0.0>,), **{})-False]
@@ -144,11 +144,11 @@

 xarray/tests/test_sparse.py::test_dataarray_method[obj.median(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.min(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.notnull(*(), **{})-False]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.pipe(*(<function sum at 0x7fc7303f7d08>,), **{'axis': 1})-True]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.pipe(*(<function sum at 0x7f657c314d08>,), **{'axis': 1})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.prod(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.quantile(*(), **{'q': 0.5})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.rank(*('x',), **{})-False]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.reduce(*(<function sum at 0x7fc7303f7d08>,), **{'dim': 'x'})-False]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.reduce(*(<function sum at 0x7f657c314d08>,), **{'dim': 'x'})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.reindex_like(*(<xarray.DataArray 'test' (x: 10, y: 5)>\n<COO: shape=(10, 5), dtype=float64, nnz=5, fill_value=0.0>\nCoordinates:\n  * x        (x) float64 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5\n  * y        (y) float64 0.5 1.5 2.5 3.5 4.5,), **{})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.roll(*(), **{'x': 2})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.sel(*(), **{'x': [0, 1, 2], 'y': [2, 3]})-True]
_______________________________________________________________________________ ERROR collecting gw3 _______________________________________________________________________________
Different tests were collected between gw1 and gw3. The difference is:
--- gw1

+++ gw3

@@ -11,7 +11,7 @@

 xarray/tests/test_sparse.py::test_variable_method[obj.any(*(), **{})-False]
 xarray/tests/test_sparse.py::test_variable_method[obj.astype(*(), **{'dtype': <class 'int'>})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.clip(*(), **{'min': 0, 'max': 1})-True]
-xarray/tests/test_sparse.py::test_variable_method[obj.coarsen(*(), **{'windows': {'x': 2}, 'func': <function sum at 0x7fc7303f7d08>})-True]
+xarray/tests/test_sparse.py::test_variable_method[obj.coarsen(*(), **{'windows': {'x': 2}, 'func': <function sum at 0x7f6f284e3d08>})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.compute(*(), **{})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.conj(*(), **{})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.copy(*(), **{})-True]
@@ -49,7 +49,7 @@

 xarray/tests/test_sparse.py::test_variable_method[obj.prod(*(), **{})-False]
 xarray/tests/test_sparse.py::test_variable_method[obj.quantile(*(), **{'q': 0.5})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.rank(*(), **{'dim': 'x'})-False]
-xarray/tests/test_sparse.py::test_variable_method[obj.reduce(*(), **{'func': <function sum at 0x7fc7303f7d08>, 'dim': 'x'})-True]
+xarray/tests/test_sparse.py::test_variable_method[obj.reduce(*(), **{'func': <function sum at 0x7f6f284e3d08>, 'dim': 'x'})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.rolling_window(*(), **{'dim': 'x', 'window': 2, 'window_dim': 'x_win'})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.shift(*(), **{'x': 2})-True]
 xarray/tests/test_sparse.py::test_variable_method[obj.std(*(), **{})-False]
@@ -144,11 +144,11 @@

 xarray/tests/test_sparse.py::test_dataarray_method[obj.median(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.min(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.notnull(*(), **{})-False]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.pipe(*(<function sum at 0x7fc7303f7d08>,), **{'axis': 1})-True]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.pipe(*(<function sum at 0x7f6f284e3d08>,), **{'axis': 1})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.prod(*(), **{})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.quantile(*(), **{'q': 0.5})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.rank(*('x',), **{})-False]
-xarray/tests/test_sparse.py::test_dataarray_method[obj.reduce(*(<function sum at 0x7fc7303f7d08>,), **{'dim': 'x'})-False]
+xarray/tests/test_sparse.py::test_dataarray_method[obj.reduce(*(<function sum at 0x7f6f284e3d08>,), **{'dim': 'x'})-False]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.reindex_like(*(<xarray.DataArray 'test' (x: 10, y: 5)>\n<COO: shape=(10, 5), dtype=float64, nnz=5, fill_value=0.0>\nCoordinates:\n  * x        (x) float64 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5\n  * y        (y) float64 0.5 1.5 2.5 3.5 4.5,), **{})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.roll(*(), **{'x': 2})-True]
 xarray/tests/test_sparse.py::test_dataarray_method[obj.sel(*(), **{'x': [0, 1, 2], 'y': [2, 3]})-True]
================================================================================= warnings summary =================================================================================
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/client.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/client.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/client.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/client.py:2
  /home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/client.py:2: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
    from collections import defaultdict, Iterator

/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/publish.py:1
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/publish.py:1
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/publish.py:1
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/publish.py:1
  /home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/publish.py:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
    from collections import MutableMapping

/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
/home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2
  /home/deepak/miniconda3/envs/dcpy/lib/python3.7/site-packages/distributed/scheduler.py:2: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
    from collections import defaultdict, deque, OrderedDict, Mapping, Set

-- Docs: https://docs.pytest.org/en/latest/warnings.html
=======================================================================
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