From 5a928ad8c3b6edefe3b0def2ef5d643875508e94 Mon Sep 17 00:00:00 2001
From: JimMoen <LnJimMoen@outlook.com>
Date: Mon, 15 Nov 2021 13:52:15 +0800
Subject: [PATCH] test(cm): add sleep time for multicore scheduling

---
 apps/emqx/test/emqx_cm_SUITE.erl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/apps/emqx/test/emqx_cm_SUITE.erl b/apps/emqx/test/emqx_cm_SUITE.erl
index 6ca6fef02..45e96775d 100644
--- a/apps/emqx/test/emqx_cm_SUITE.erl
+++ b/apps/emqx/test/emqx_cm_SUITE.erl
@@ -180,6 +180,7 @@ t_open_session_race_condition(_) ->
     exit(Winner, kill),
     receive {'DOWN', _, process, Winner, _} -> ok end,
     ignored = gen_server:call(emqx_cm, ignore, infinity), %% sync
+    timer:sleep(100),
     ?assertEqual([], emqx_cm:lookup_channels(ClientId)).
 
 t_discard_session(_) ->