ddl, test: fix data race in owner change test (#44536)

close #44534
pingcap · Jun 9, 2023 · 1061ed2 · 1061ed2
1 parent d2f8df6
commit 1061ed2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/ddl/ddl.go b/ddl/ddl.go
@@ -755,6 +755,8 @@ func (d *ddl) Start(ctxPool *pools.ResourcePool) error {
 	d.sessPool = sess.NewSessionPool(ctxPool, d.store)
 	d.ownerManager.SetBeOwnerHook(func() {
 		var err error
+		d.ddlSeqNumMu.Lock()
+		defer d.ddlSeqNumMu.Unlock()
 		d.ddlSeqNumMu.seqNum, err = d.GetNextDDLSeqNum()
 		if err != nil {
 			logutil.BgLogger().Error("error when getting the ddl history count", zap.Error(err))