FIX-modin-project#2465: Disable open files tracking on Windows due to…

… psutil limitation

Signed-off-by: Vasilij Litvinov <vasilij.n.litvinov@intel.com>

modin/config/envvars.py

@@ -12,6 +12,7 @@
 # governing permissions and limitations under the License.
 
 import os
+import sys
 from textwrap import dedent
 import warnings
 from packaging import version
@@ -208,6 +209,18 @@ class TestDatasetSize(EnvironmentVariable, type=str):
     choices = ("Small", "Normal", "Big")
 
 
+class TrackFileLeaks(EnvironmentVariable, type=bool):
+    """
+    Whether to track for open file handles leakage during testing
+    """
+
+    varname = "MODIN_TEST_TRACK_FILE_LEAKS"
+    # Turn off tracking on Windows by default because
+    # psutil's open_files() can be extremely slow on Windows (up to adding a few hours).
+    # see https://github.com/giampaolo/psutil/pull/597
+    default = sys.platform != "win32"
+
+
 def _check_vars():
     """
     Look out for any environment variables that start with "MODIN_" prefix

modin/pandas/test/utils.py

@@ -23,7 +23,7 @@
 )
 import modin.pandas as pd
 from modin.utils import to_pandas
-from modin.config import TestDatasetSize
+from modin.config import TestDatasetSize, TrackFileLeaks
 from io import BytesIO
 import os
 from string import ascii_letters
@@ -1018,6 +1018,8 @@ def check_file_leaks(func):
     A decorator that ensures that no *newly* opened file handles are left
     after decorated function is finished.
     """
+    if not TrackFileLeaks.get():
+        return func
 
     @functools.wraps(func)
     def check(*a, **kw):