From 9b447505f63313f7cfa0482b421a99716499233c Mon Sep 17 00:00:00 2001
From: Nick Crews <nicholas.b.crews@gmail.com>
Date: Wed, 22 Jan 2025 14:50:29 -0900
Subject: [PATCH] chore(test): add comment explaining pytest.mark.xdist_group

---
 ibis/backends/tests/test_impure.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ibis/backends/tests/test_impure.py b/ibis/backends/tests/test_impure.py
index 43ae4d2e74f0..0a2055851332 100644
--- a/ibis/backends/tests/test_impure.py
+++ b/ibis/backends/tests/test_impure.py
@@ -11,6 +11,9 @@
 
 tm = pytest.importorskip("pandas.testing")
 
+# Concurrent execution of CREATE OR REPLACE FUNCTION in postgres fails
+# This ensures that all tests in this module run in the same process as
+# long as --dist=loadgroup is passed, which it is.
 pytestmark = pytest.mark.xdist_group("impure")
 
 no_randoms = [