try fix data race (tikv#6083)

hnes · web-flow · commit a6e77c195d35 · 2023-03-06T15:53:11.000+08:00
ref tikv#6045 Signed-off-by: Sen Han <00hnes@gmail.com>
diff --git a/server/cluster/cluster.go b/server/cluster/cluster.go
@@ -1084,7 +1084,7 @@ func (c *RaftCluster) putStoreImpl(store *metapb.Store, force bool) error {
 		labels := store.GetLabels()
 		if !force {
 			// If 'force' isn't set, the given labels will merge into those labels which already existed in the store.
-			labels = s.MergeLabels(labels)
+			labels = s.Clone().MergeLabels(labels)
 		}
 		// Update an existed store.
 		s = s.Clone(

Original file line number	Diff line number	Diff line change
`@@ -1084,7 +1084,7 @@ func (c RaftCluster) putStoreImpl(store metapb.Store, force bool) error {`
`1084`	`1084`	`labels := store.GetLabels()`
`1085`	`1085`	`if !force {`
`1086`	`1086`	`// If 'force' isn't set, the given labels will merge into those labels which already existed in the store.`
`1087`		`- labels = s.MergeLabels(labels)`
	`1087`	`+ labels = s.Clone().MergeLabels(labels)`
`1088`	`1088`	`}`
`1089`	`1089`	`// Update an existed store.`
`1090`	`1090`	`s = s.Clone(`