From 63fb49d8a9942c6ae2def5d6e85b2b4d54c5b023 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Mierzwa?= <l.mierzwa@gmail.com>
Date: Wed, 1 Jul 2020 13:29:34 +0100
Subject: [PATCH] fix(backend): don't over-allocate groups in dedup code

---
 internal/alertmanager/dedup.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/alertmanager/dedup.go b/internal/alertmanager/dedup.go
index 6d32e33c5..4e4b1bcdd 100644
--- a/internal/alertmanager/dedup.go
+++ b/internal/alertmanager/dedup.go
@@ -20,7 +20,7 @@ func DedupAlerts() []models.AlertGroup {
 		groups := am.Alerts()
 		for _, ag := range groups {
 			if _, found := uniqueGroups[ag.ID]; !found {
-				uniqueGroups[ag.ID] = make([]models.AlertGroup, 0, len(groups))
+				uniqueGroups[ag.ID] = []models.AlertGroup{}
 			}
 			uniqueGroups[ag.ID] = append(uniqueGroups[ag.ID], ag)
 		}