From f5ca27ef326e94fb29b4ba35a5d59aa575f66880 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E8=B6=85?= <cclcwangchao@hotmail.com>
Date: Thu, 23 Mar 2023 19:26:42 +0800
Subject: [PATCH] ttl: fix TTL cannot export metrics
 `tidb_server_ttl_phase_time` (#42517)

close pingcap/tidb#42515
---
 ttl/metrics/metrics.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ttl/metrics/metrics.go b/ttl/metrics/metrics.go
index 9b8e7a4e66b0f..3b73c9a8bf6a3 100644
--- a/ttl/metrics/metrics.go
+++ b/ttl/metrics/metrics.go
@@ -112,6 +112,9 @@ func InitMetricsVars() {
 
 	ScanningTaskCnt = metrics.TTLTaskStatus.With(prometheus.Labels{metrics.LblType: "scanning"})
 	DeletingTaskCnt = metrics.TTLTaskStatus.With(prometheus.Labels{metrics.LblType: "deleting"})
+
+	scanWorkerPhases = initWorkerPhases("scan_worker")
+	deleteWorkerPhases = initWorkerPhases("delete_worker")
 }
 
 func initWorkerPhases(workerType string) map[string]prometheus.Counter {
@@ -128,8 +131,8 @@ func initWorkerPhases(workerType string) map[string]prometheus.Counter {
 	}
 }
 
-var scanWorkerPhases = initWorkerPhases("scan_worker")
-var deleteWorkerPhases = initWorkerPhases("delete_worker")
+var scanWorkerPhases map[string]prometheus.Counter
+var deleteWorkerPhases map[string]prometheus.Counter
 
 // PhaseTracer is used to tracer the phases duration
 type PhaseTracer struct {