From 826a612a82fcf9ac74546be69f2a5a4785881c30 Mon Sep 17 00:00:00 2001
From: cfzjywxk <lsswxrxr@163.com>
Date: Fri, 11 Aug 2023 16:59:56 +0800
Subject: [PATCH] use atomic to read epoch

Signed-off-by: cfzjywxk <lsswxrxr@163.com>
---
 internal/locate/region_request.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/internal/locate/region_request.go b/internal/locate/region_request.go
index b5546f769..371148bd4 100644
--- a/internal/locate/region_request.go
+++ b/internal/locate/region_request.go
@@ -253,6 +253,10 @@ type replica struct {
 	deadlineErrUsingConfTimeout bool
 }
 
+func (r *replica) getEpoch() uint32 {
+	return atomic.LoadUint32(&r.epoch)
+}
+
 func (r *replica) isEpochStale() bool {
 	return r.epoch != atomic.LoadUint32(&r.store.epoch)
 }
@@ -324,7 +328,7 @@ func (s *replicaSelector) String() string {
 				replica.store.storeID,
 				replica.isEpochStale(),
 				replica.attempts,
-				replica.epoch,
+				replica.getEpoch(),
 				atomic.LoadUint32(&replica.store.epoch),
 				replica.store.getResolveState(),
 				replica.store.getLivenessState(),