From 37bf12c29ee94cc6744f3bd405b67a99e7eef831 Mon Sep 17 00:00:00 2001
From: "Zaiming (Stone) Shi" <zmstone@gmail.com>
Date: Tue, 2 May 2023 09:04:10 +0200
Subject: [PATCH] test(emqx_telemetry_SUITE): fix flakyness

---
 apps/emqx_modules/test/emqx_telemetry_SUITE.erl | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/apps/emqx_modules/test/emqx_telemetry_SUITE.erl b/apps/emqx_modules/test/emqx_telemetry_SUITE.erl
index bb5f39c1f..cc9a8b20f 100644
--- a/apps/emqx_modules/test/emqx_telemetry_SUITE.erl
+++ b/apps/emqx_modules/test/emqx_telemetry_SUITE.erl
@@ -463,6 +463,16 @@ t_num_clients(_Config) ->
     ok.
 
 t_advanced_mqtt_features(_) ->
+    try
+        ok = test_advanced_mqtt_features()
+    catch
+        _:_ ->
+            %% delayed messages' metrics might not be reported yet
+            timer:sleep(1000),
+            test_advanced_mqtt_features()
+    end.
+
+test_advanced_mqtt_features() ->
     {ok, TelemetryData} = emqx_telemetry:get_telemetry(),
     AdvFeats = get_value(advanced_mqtt_features, TelemetryData),
     ?assertEqual(