From d8f0a6ea8b7e40cc37bf08f2d7418ca2df3cc30b Mon Sep 17 00:00:00 2001
From: Ti Chi Robot <ti-community-prow-bot@tidb.io>
Date: Tue, 10 Dec 2024 14:12:36 +0800
Subject: [PATCH] snapshot(ticdc): fix the data race when log set to debug
 caused by print logs (#11830) (#11835)

close pingcap/tiflow#11827
---
 cdc/entry/schema/snapshot.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cdc/entry/schema/snapshot.go b/cdc/entry/schema/snapshot.go
index b188ffcf5a7..0e1971e8c64 100644
--- a/cdc/entry/schema/snapshot.go
+++ b/cdc/entry/schema/snapshot.go
@@ -570,6 +570,9 @@ func (s *Snapshot) SchemaCount() (count int) {
 
 // DumpToString dumps the snapshot to a string.
 func (s *Snapshot) DumpToString() string {
+	s.rwlock.RLock()
+	defer s.rwlock.RUnlock()
+
 	schemas := make([]string, 0, s.inner.schemas.Len())
 	s.IterSchemas(func(dbInfo *timodel.DBInfo) {
 		schemas = append(schemas, fmt.Sprintf("%v", dbInfo))