[7.2.x] Mitigate directory creation race condition

pytest-dev · Jan 6, 2023 · a6f85a0 · a6f85a0
1 parent 08d0dd0
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diff --git a/changelog/10607.bugfix.rst b/changelog/10607.bugfix.rst
@@ -0,0 +1 @@
+Fix a race condition when creating junitxml reports, which could occur when multiple instances of pytest execute in parallel.
diff --git a/src/_pytest/junitxml.py b/src/_pytest/junitxml.py
@@ -645,8 +645,8 @@ def pytest_sessionstart(self) -> None:
 
     def pytest_sessionfinish(self) -> None:
         dirname = os.path.dirname(os.path.abspath(self.logfile))
-        if not os.path.isdir(dirname):
-            os.makedirs(dirname)
+        # exist_ok avoids filesystem race conditions between checking path existence and requesting creation
+        os.makedirs(dirname, exist_ok=True)
 
         with open(self.logfile, "w", encoding="utf-8") as logfile:
             suite_stop_time = timing.time()