disable Linearizable

Signed-off-by: lhy1024 <[email protected]>

pkg/utils/etcdutil/etcdutil.go

@@ -33,6 +33,7 @@ import (
 	"github.com/tikv/pd/pkg/utils/logutil"
 	"github.com/tikv/pd/pkg/utils/syncutil"
 	"github.com/tikv/pd/pkg/utils/typeutil"
+	"go.etcd.io/etcd/api/v3/etcdserverpb"
 	"go.etcd.io/etcd/api/v3/mvccpb"
 	"go.etcd.io/etcd/api/v3/v3rpc/rpctypes"
 	etcdtypes "go.etcd.io/etcd/client/pkg/v3/types"
@@ -119,12 +120,17 @@ func ListEtcdMembers(ctx context.Context, client *clientv3.Client) (*clientv3.Me
 		time.Sleep(time.Duration(d) * time.Second)
 	})
 	newCtx, cancel := context.WithTimeout(ctx, DefaultRequestTimeout)
-	listResp, err := client.MemberList(newCtx)
+	// After the etcd server is upgraded to v3.5.0, the MemberList API will return the member list in a linearizable way by default.
+	// It is introduced by https://github.com/etcd-io/etcd/pull/11639
+	// If Linearizable is set to false, the member list will be returned with server's local data.
+	// If Linearizable is set to true, it is served with linearizable guarantee. If the server is disconnected from quorum, `MemberList` call will fail.
+	c := clientv3.RetryClusterClient(client)
+	resp, err := c.MemberList(newCtx, &etcdserverpb.MemberListRequest{Linearizable: false})
 	cancel()
 	if err != nil {
-		return listResp, errs.ErrEtcdMemberList.Wrap(err).GenWithStackByCause()
+		return (*clientv3.MemberListResponse)(resp), errs.ErrEtcdMemberList.Wrap(err).GenWithStackByCause()
 	}
-	return listResp, nil
+	return (*clientv3.MemberListResponse)(resp), nil
 }
 
 // RemoveEtcdMember removes a member by the given id.