go/neo/*: Sync with NEO/py on changes to make the number of replicas modifiable at runtime

This corresponds to NEO/py commit ef5fc508 (Make the number of replicas
modifiable when the cluster is running).

One important change in the protocol is that Client no longer queries
Master for partition table - instead M pushed partTab to C right after
identification (after pushing nodeTab).

See also: https://neo.nexedi.com/P-NEO-Protocol.Specification.2019?portal_skin=CI_slideshow#/9/5

go/neo/client.go

@@ -258,6 +258,37 @@ func (c *Client) talkMaster1(ctx context.Context) (err error) {
 		c.node.MyInfo.UUID = accept.YourUUID
 	}
 
+	wg, ctx := errgroup.WithContext(ctx)	// XXX -> xsync.WorkGroup
+	defer xio.CloseWhenDone(ctx, mlink)()
+
+	// master pushes nodeTab and partTab to us right after identification
+	// XXX merge into -> node.DialMaster?
+
+	// nodeTab
+	mnt := proto.NotifyNodeInformation{}
+	_, err = mlink.Expect1(&mnt)
+	if err != nil {
+		return fmt.Errorf("after identification: %w", err)
+	}
+
+	// partTab
+	mpt := proto.SendPartitionTable{}
+	_, err = mlink.Expect1(&mpt)
+	if err != nil {
+		return fmt.Errorf("after identification: %w", err)
+	}
+	pt := PartTabFromDump(mpt.PTid, mpt.RowList) // TODO handle mpt.NumReplicas
+	log.Infof(ctx, "master initialized us with next parttab:\n%s", pt)
+
+	c.node.StateMu.Lock()
+	c.node.UpdateNodeTab(ctx, &mnt)
+	c.node.PartTab = pt
+	opready := c.updateOperational()
+	c.node.StateMu.Unlock()
+	opready()
+
+
+
 	// set c.mlink and notify waiters
 	c.mlinkMu.Lock()
 	c.mlink = mlink
@@ -266,10 +297,6 @@ func (c *Client) talkMaster1(ctx context.Context) (err error) {
 	c.mlinkMu.Unlock()
 	close(ready)
 
-	wg, ctx := errgroup.WithContext(ctx)	// XXX -> xsync.WorkGroup
-
-	defer xio.CloseWhenDone(ctx, mlink)()
-
 	// when we are done - reset .mlink
 	defer func() {
 		c.mlinkMu.Lock()
@@ -298,21 +325,6 @@ func (c *Client) talkMaster1(ctx context.Context) (err error) {
 func (c *Client) initFromMaster(ctx context.Context, mlink *neonet.NodeLink) (err error) {
 	defer task.Running(&ctx, "init")(&err)
 
-	// query partTab
-	rpt := proto.AnswerPartitionTable{}
-	err = mlink.Ask1(&proto.AskPartitionTable{}, &rpt)
-	if err != nil {
-		return err
-	}
-
-	pt := PartTabFromDump(rpt.PTid, rpt.RowList)
-	log.Infof(ctx, "master initialized us with next parttab:\n%s", pt)
-	c.node.StateMu.Lock()
-	c.node.PartTab = pt
-	opready := c.updateOperational()
-	c.node.StateMu.Unlock()
-	opready()
-
 	// query last_tid
 	lastTxn := proto.AnswerLastTransaction{}
 	err = mlink.Ask1(&proto.LastTransaction{}, &lastTxn)

go/neo/master.go

-// Copyright (C) 2017-2018  Nexedi SA and Contributors.
+// Copyright (C) 2017-2020  Nexedi SA and Contributors.
 //                          Kirill Smelkov <kirr@nexedi.com>
 //
 // This program is free software: you can Use, Study, Modify and Redistribute
@@ -505,7 +505,7 @@ func storCtlRecovery(ctx context.Context, stor *Node, res chan storRecovery) {
 	}
 
 	// reconstruct partition table from response
-	pt := PartTabFromDump(resp.PTid, resp.RowList)
+	pt := PartTabFromDump(resp.PTid, resp.RowList) // TODO handle resp.NumReplicas
 	res <- storRecovery{stor: stor, partTab: pt}
 }
 
@@ -696,6 +696,7 @@ func storCtlVerify(ctx context.Context, stor *Node, pt *PartitionTable, res chan
 	// send just recovered parttab so storage saves it
 	err = slink.Send1(&proto.SendPartitionTable{
 		PTid:	     pt.PTid,
+		NumReplicas: 0, // FIXME hardcoded
 		RowList:     pt.Dump(),
 	})
 	if err != nil {
@@ -898,6 +899,9 @@ func (m *Master) serveClient(ctx context.Context, cli *Node) (err error) {
 	wg, ctx := errgroup.WithContext(ctx)
 	defer xio.CloseWhenDone(ctx, clink)()	// XXX -> cli.CloseLink?
 
+	// FIXME send initial nodeTab and partTab before starting serveClient1
+	// (move those initial sends from keepPeerUpdated to here)
+
 	// M -> C notifications about cluster state
 	wg.Go(func() error {
 		return m.keepPeerUpdated(ctx, clink)
@@ -926,15 +930,6 @@ func (m *Master) serveClient(ctx context.Context, cli *Node) (err error) {
 // serveClient1 prepares response for 1 request from client
 func (m *Master) serveClient1(ctx context.Context, req proto.Msg) (resp proto.Msg) {
 	switch req := req.(type) {
-	case *proto.AskPartitionTable:
-		m.node.StateMu.RLock()
-		rpt := &proto.AnswerPartitionTable{
-			PTid:	 m.node.PartTab.PTid,
-			RowList: m.node.PartTab.Dump(),
-		}
-		m.node.StateMu.RUnlock()
-		return rpt
-
 	case *proto.LastTransaction:
 		// XXX lock
 		return &proto.AnswerLastTransaction{m.lastTid}
@@ -965,6 +960,10 @@ func (m *Master) keepPeerUpdated(ctx context.Context, link *neonet.NodeLink) (er
 		nodeiv[i] = node.NodeInfo
 	}
 
+	ptid := m.node.PartTab.PTid
+	ptnr := uint32(0) // FIXME hardcoded NumReplicas; NEO/py keeps this as n(replica)-1
+	ptv  := m.node.PartTab.Dump()
+
 	// XXX RLock is not enough for subscribe - right?
 	nodech, nodeUnsubscribe := m.node.NodeTab.SubscribeBuffered()
 
@@ -990,6 +989,16 @@ func (m *Master) keepPeerUpdated(ctx context.Context, link *neonet.NodeLink) (er
 		return err
 	}
 
+	err = link.Send1(&proto.SendPartitionTable{
+		PTid:        ptid,
+		NumReplicas: ptnr,
+		RowList:     ptv,
+	})
+	if err != nil {
+		return err
+	}
+
+
 	// now proxy the updates until we are done
 	for {
 		var msg proto.Msg
@@ -1081,8 +1090,6 @@ func (m *Master) identify(ctx context.Context, n nodeCome) (node *Node, resp pro
 	accept := &proto.AcceptIdentification{
 			NodeType:	proto.MASTER,
 			MyUUID:		m.node.MyInfo.UUID,
-			NumPartitions:	1,	// FIXME hardcoded
-			NumReplicas:	0,	// FIXME hardcoded  (neo/py meaning for n(replica) is `n(real-replica) - 1`)
 			YourUUID:	uuid,
 		}
 

go/neo/neo.go

@@ -324,7 +324,7 @@ func (app *NodeApp) UpdateNodeTab(ctx context.Context, msg *proto.NotifyNodeInfo
 
 // UpdatePartTab applies updates to .PartTab from message and logs changes appropriately.
 func (app *NodeApp) UpdatePartTab(ctx context.Context, msg *proto.SendPartitionTable) {
-	pt := PartTabFromDump(msg.PTid, msg.RowList)
+	pt := PartTabFromDump(msg.PTid, msg.RowList) // FIXME handle msg.NumReplicas
 	// XXX logging under lock
 	log.Infof(ctx, "parttab update: %v", pt)
 	app.PartTab = pt

go/neo/neo_test.go

@@ -118,8 +118,6 @@ func TestMasterStorage(t0 *testing.T) {
 	tSM.Expect(conntx("m:2", "s:2", 1, &proto.AcceptIdentification{
 		NodeType:	proto.MASTER,
 		MyUUID:		proto.UUID(proto.MASTER, 1),
-		NumPartitions:	1,
-		NumReplicas:	0,
 		YourUUID:	proto.UUID(proto.STORAGE, 1),
 	}))
 
@@ -137,6 +135,7 @@ func TestMasterStorage(t0 *testing.T) {
 	tMS.Expect(conntx("m:2", "s:2", 2, &proto.AskPartitionTable{}))
 	tMS.Expect(conntx("s:2", "m:2", 2, &proto.AnswerPartitionTable{
 		PTid:		0,
+		NumReplicas:	0,
 		RowList:	[]proto.RowInfo{},
 	}))
 
@@ -163,8 +162,9 @@ func TestMasterStorage(t0 *testing.T) {
 
 	tMS.Expect(conntx("m:2", "s:2", 4, &proto.SendPartitionTable{
 		PTid:		1,
+		NumReplicas:    0,
 		RowList:	[]proto.RowInfo{
-			{0, []proto.CellInfo{{proto.UUID(proto.STORAGE, 1), proto.UP_TO_DATE}}},
+			{[]proto.CellInfo{{proto.UUID(proto.STORAGE, 1), proto.UP_TO_DATE}}},
 		},
 	}))
 
@@ -220,25 +220,10 @@ func TestMasterStorage(t0 *testing.T) {
 	tCM.Expect(conntx("m:3", "c:1", 1, &proto.AcceptIdentification{
 		NodeType:	proto.MASTER,
 		MyUUID:		proto.UUID(proto.MASTER, 1),
-		NumPartitions:	1,
-		NumReplicas:	0,
 		YourUUID:	proto.UUID(proto.CLIENT, 1),
 	}))
 
-	// C asks M about PT and last_tid
-	// NOTE this might come in parallel with vvv "C <- M NotifyNodeInformation C1,M1,S1"
-	tCM.Expect(conntx("c:1", "m:3", 3, &proto.AskPartitionTable{}))
-	tCM.Expect(conntx("m:3", "c:1", 3, &proto.AnswerPartitionTable{
-		PTid:		1,
-		RowList:	[]proto.RowInfo{
-			{0, []proto.CellInfo{{proto.UUID(proto.STORAGE, 1), proto.UP_TO_DATE}}},
-		},
-	}))
-	tCM.Expect(conntx("c:1", "m:3", 5, &proto.LastTransaction{}))
-	tCM.Expect(conntx("m:3", "c:1", 5, &proto.AnswerLastTransaction{lastTid}))
-
 	// C <- M NotifyNodeInformation C1,M1,S1
-	// NOTE this might come in parallel with ^^^ "C asks M about PT"
 	tMC.Expect(conntx("m:3", "c:1", 0, &proto.NotifyNodeInformation{
 		IdTime:		proto.IdTimeNone,	// XXX ?
 		NodeList:	[]proto.NodeInfo{
@@ -248,10 +233,22 @@ func TestMasterStorage(t0 *testing.T) {
 		},
 	}))
 
+	tMC.Expect(conntx("m:3", "c:1", 2, &proto.SendPartitionTable{
+		PTid:		1,
+		NumReplicas:	0,
+		RowList:	[]proto.RowInfo{
+			{[]proto.CellInfo{{proto.UUID(proto.STORAGE, 1), proto.UP_TO_DATE}}},
+		},
+	}))
+
 	tC.Expect(δnode("c", "m:1", proto.MASTER,  1, proto.RUNNING, proto.IdTimeNone))
 	tC.Expect(δnode("c", "s:1", proto.STORAGE, 1, proto.RUNNING, 0.01))
 	tC.Expect(δnode("c", "",    proto.CLIENT,  1, proto.RUNNING, 0.02))
 
+	// C asks M last_tid
+	tCM.Expect(conntx("c:1", "m:3", 3, &proto.LastTransaction{}))
+	tCM.Expect(conntx("m:3", "c:1", 3, &proto.AnswerLastTransaction{lastTid}))
+
 	// ----------------------------------------
 
 	// C asks M about last tid	XXX better master sends it itself on new client connected
@@ -264,8 +261,8 @@ func TestMasterStorage(t0 *testing.T) {
 		}
 	})
 
-	tCM.Expect(conntx("c:1", "m:3", 7, &proto.LastTransaction{}))
-	tCM.Expect(conntx("m:3", "c:1", 7, &proto.AnswerLastTransaction{
+	tCM.Expect(conntx("c:1", "m:3", 5, &proto.LastTransaction{}))
+	tCM.Expect(conntx("m:3", "c:1", 5, &proto.AnswerLastTransaction{
 		Tid: lastTid,
 	}))
 
@@ -305,8 +302,6 @@ func TestMasterStorage(t0 *testing.T) {
 	tCS.Expect(conntx("s:3", "c:2", 1, &proto.AcceptIdentification{
 		NodeType:	proto.STORAGE,
 		MyUUID:		proto.UUID(proto.STORAGE, 1),
-		NumPartitions:	1,
-		NumReplicas:	0,
 		YourUUID:	proto.UUID(proto.CLIENT, 1),
 	}))
 

go/neo/neonet/connection.go

@@ -58,7 +58,7 @@
 // object. The Request contains the message received and internally the
 // connection. A response can be sent back via Request.Reply. Then once
 // Request.Close is called the connection object that was accepted is
-// immediately put back into pool for later reuse.
+// immediately put back into pool for later reuse. XXX Expect1
 package neonet
 
 // XXX neonet compatibility with NEO/py depends on the following small NEO/py patch:
@@ -1552,6 +1552,24 @@ func (link *NodeLink) Send1(msg proto.Msg) error {
 	return err
 }
 
+// Expect1 receives notification in 1-1 model.
+//
+// See Conn.Expect for semantic details.
+//
+// See "Lightweight mode" in top-level package doc for overview.
+func (link *NodeLink) Expect1(msgv ...proto.Msg) (which int, err error) {
+	// XXX a bit dup wrt Recv1
+	conn, err := link.Accept()
+	if err != nil {
+		return -1, err
+	}
+
+	// NOTE serveRecv guaranty that when a conn is accepted, there is 1 message in conn.rxq
+	which, err = conn.Expect(msgv...)
+	conn.lightClose()
+	return which, err
+}
+
 
 // Ask1 sends request and receives response in 1-1 model.
 //

go/neo/parttab.go

-// Copyright (C) 2017  Nexedi SA and Contributors.
+// Copyright (C) 2017-2020  Nexedi SA and Contributors.
 //                          Kirill Smelkov <kirr@nexedi.com>
 //
 // This program is free software: you can Use, Study, Modify and Redistribute
@@ -254,7 +254,7 @@ func (pt *PartitionTable) Dump() []proto.RowInfo { // XXX also include .ptid? ->
 			cellv[j] = cell.CellInfo
 		}
 
-		rowv[i] = proto.RowInfo{Offset: uint32(i), CellList: cellv}	// XXX cast?
+		rowv[i] = proto.RowInfo{CellList: cellv}
 	}
 	return rowv
 }
@@ -264,9 +264,8 @@ func PartTabFromDump(ptid proto.PTid, rowv []proto.RowInfo) *PartitionTable {
 	pt := &PartitionTable{}
 	pt.PTid = ptid
 
-	for _, row := range rowv {
-		i := row.Offset
-		for i >= uint32(len(pt.tab)) {
+	for i, row := range rowv {
+		for i >= len(pt.tab) {
 			pt.tab = append(pt.tab, []Cell{})
 		}
 

go/neo/proto/proto.go

@@ -346,7 +346,6 @@ type CellInfo struct {
 
 //neo:proto typeonly
 type RowInfo struct {
-	Offset   uint32 // PNumber	XXX -> Pid
 	CellList []CellInfo
 }
 
@@ -382,8 +381,6 @@ type RequestIdentification struct {
 type AcceptIdentification struct {
 	NodeType      NodeType // XXX name
 	MyUUID        NodeUUID
-	NumPartitions uint32 // PNumber
-	NumReplicas   uint32 // PNumber
 	YourUUID      NodeUUID
 }
 
@@ -457,22 +454,23 @@ type AnswerLastIDs struct {
 }
 
 // Ask storage node the remaining data needed by master to recover.
-// This is also how the clients get the full partition table on connection.
 //
-//neo:nodes M -> S; C -> M
+//neo:nodes M -> S
 type AskPartitionTable struct {
 }
 
 type AnswerPartitionTable struct {
 	PTid
+	NumReplicas uint32	// PNumber
 	RowList     []RowInfo
 }
 
-// Send the full partition table to admin/storage nodes on connection.
+// Send the full partition table to admin/client/storage nodes on connection.
 //
-//neo:nodes M -> A, S
+//neo:nodes M -> A, C, S
 type SendPartitionTable struct {
 	PTid
+	NumReplicas uint32	// PNumber
 	RowList     []RowInfo
 }
 
@@ -481,6 +479,7 @@ type SendPartitionTable struct {
 //neo:nodes M -> *
 type NotifyPartitionChanges struct {
 	PTid
+	NumReplicas uint32 // PNumber
 	CellList    []struct {
 		Offset   uint32 // PNumber	XXX -> Pid
 		CellInfo CellInfo
@@ -850,6 +849,13 @@ type TweakPartitionTable struct {
 	// answer = Error
 }
 
+// Set the number of replicas.
+//
+//neo:nodes ctl -> A -> M
+type SetNumReplicas struct {
+	NumReplicas uint32 // PNumber
+}
+
 // Set the cluster state.
 //
 //neo:nodes ctl -> A -> M

go/neo/proto/proto_test.go

@@ -190,18 +190,20 @@ func TestMsgMarshal(t *testing.T) {
 		// PTid, [] (of [] of {UUID, CellState})
 		{&AnswerPartitionTable{
 			PTid:        0x0102030405060708,
+			NumReplicas: 34,
 			RowList: []RowInfo{
-				{1, []CellInfo{{11, UP_TO_DATE}, {17, OUT_OF_DATE}}},
-				{2, []CellInfo{{11, FEEDING}}},
-				{7, []CellInfo{{11, CORRUPTED}, {15, DISCARDED}, {23, UP_TO_DATE}}},
+				{[]CellInfo{{11, UP_TO_DATE}, {17, OUT_OF_DATE}}},
+				{[]CellInfo{{11, FEEDING}}},
+				{[]CellInfo{{11, CORRUPTED}, {15, DISCARDED}, {23, UP_TO_DATE}}},
 			},
 			},
 
 			hex("0102030405060708") +
+			hex("00000022") +
 			hex("00000003") +
-				hex("00000001000000020000000b010000001100") +
-				hex("00000002000000010000000b02") +
-				hex("00000007000000030000000b030000000f040000001701"),
+				hex("000000020000000b010000001100") +
+				hex("000000010000000b02") +
+				hex("000000030000000b030000000f040000001701"),
 		},
 
 		// map[Oid]struct {Tid,Tid,bool}

go/neo/proto/zproto-marshal.go

@@ -211,27 +211,23 @@ func (*AcceptIdentification) NEOMsgCode() uint16 {
 }
 
 func (p *AcceptIdentification) NEOMsgEncodedLen() int {
-	return 17
+	return 9
 }
 
 func (p *AcceptIdentification) NEOMsgEncode(data []byte) {
 	(data[0:])[0] = uint8(int8(p.NodeType))
 	binary.BigEndian.PutUint32(data[1:], uint32(int32(p.MyUUID)))
-	binary.BigEndian.PutUint32(data[5:], p.NumPartitions)
-	binary.BigEndian.PutUint32(data[9:], p.NumReplicas)
-	binary.BigEndian.PutUint32(data[13:], uint32(int32(p.YourUUID)))
+	binary.BigEndian.PutUint32(data[5:], uint32(int32(p.YourUUID)))
 }
 
 func (p *AcceptIdentification) NEOMsgDecode(data []byte) (int, error) {
-	if len(data) < 17 {
+	if len(data) < 9 {
 		goto overflow
 	}
 	p.NodeType = NodeType(int8((data[0 : 0+1])[0]))
 	p.MyUUID = NodeUUID(int32(binary.BigEndian.Uint32(data[1 : 1+4])))
-	p.NumPartitions = binary.BigEndian.Uint32(data[5 : 5+4])
-	p.NumReplicas = binary.BigEndian.Uint32(data[9 : 9+4])
-	p.YourUUID = NodeUUID(int32(binary.BigEndian.Uint32(data[13 : 13+4])))
-	return 17, nil
+	p.YourUUID = NodeUUID(int32(binary.BigEndian.Uint32(data[5 : 5+4])))
+	return 9, nil
 
 overflow:
 	return 0, ErrDecodeOverflow
@@ -606,22 +602,22 @@ func (p *AnswerPartitionTable) NEOMsgEncodedLen() int {
 		a := &p.RowList[i]
 		size += len((*a).CellList) * 5
 	}
-	return 12 + len(p.RowList)*8 + size
+	return 16 + len(p.RowList)*4 + size
 }
 
 func (p *AnswerPartitionTable) NEOMsgEncode(data []byte) {
 	binary.BigEndian.PutUint64(data[0:], uint64(p.PTid))
+	binary.BigEndian.PutUint32(data[8:], p.NumReplicas)
 	{
 		l := uint32(len(p.RowList))
-		binary.BigEndian.PutUint32(data[8:], l)
-		data = data[12:]
+		binary.BigEndian.PutUint32(data[12:], l)
+		data = data[16:]
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.RowList[i]
-			binary.BigEndian.PutUint32(data[0:], (*a).Offset)
 			{
 				l := uint32(len((*a).CellList))
-				binary.BigEndian.PutUint32(data[4:], l)
-				data = data[8:]
+				binary.BigEndian.PutUint32(data[0:], l)
+				data = data[4:]
 				for i := 0; uint32(i) < l; i++ {
 					a := &(*a).CellList[i]
 					binary.BigEndian.PutUint32(data[0:], uint32(int32((*a).UUID)))
@@ -636,23 +632,23 @@ func (p *AnswerPartitionTable) NEOMsgEncode(data []byte) {
 
 func (p *AnswerPartitionTable) NEOMsgDecode(data []byte) (int, error) {
 	var nread uint64
-	if len(data) < 12 {
+	if len(data) < 16 {
 		goto overflow
 	}
 	p.PTid = PTid(binary.BigEndian.Uint64(data[0 : 0+8]))
+	p.NumReplicas = binary.BigEndian.Uint32(data[8 : 8+4])
 	{
-		l := binary.BigEndian.Uint32(data[8 : 8+4])
-		data = data[12:]
+		l := binary.BigEndian.Uint32(data[12 : 12+4])
+		data = data[16:]
 		p.RowList = make([]RowInfo, l)
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.RowList[i]
-			if len(data) < 8 {
+			if len(data) < 4 {
 				goto overflow
 			}
-			(*a).Offset = binary.BigEndian.Uint32(data[0 : 0+4])
 			{
-				l := binary.BigEndian.Uint32(data[4 : 4+4])
-				data = data[8:]
+				l := binary.BigEndian.Uint32(data[0 : 0+4])
+				data = data[4:]
 				if uint64(len(data)) < uint64(l)*5 {
 					goto overflow
 				}
@@ -666,9 +662,9 @@ func (p *AnswerPartitionTable) NEOMsgDecode(data []byte) (int, error) {
 				}
 			}
 		}
-		nread += uint64(l) * 8
+		nread += uint64(l) * 4
 	}
-	return 12 + int(nread), nil
+	return 16 + int(nread), nil
 
 overflow:
 	return 0, ErrDecodeOverflow
@@ -686,22 +682,22 @@ func (p *SendPartitionTable) NEOMsgEncodedLen() int {
 		a := &p.RowList[i]
 		size += len((*a).CellList) * 5
 	}
-	return 12 + len(p.RowList)*8 + size
+	return 16 + len(p.RowList)*4 + size
 }
 
 func (p *SendPartitionTable) NEOMsgEncode(data []byte) {
 	binary.BigEndian.PutUint64(data[0:], uint64(p.PTid))
+	binary.BigEndian.PutUint32(data[8:], p.NumReplicas)
 	{
 		l := uint32(len(p.RowList))
-		binary.BigEndian.PutUint32(data[8:], l)
-		data = data[12:]
+		binary.BigEndian.PutUint32(data[12:], l)
+		data = data[16:]
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.RowList[i]
-			binary.BigEndian.PutUint32(data[0:], (*a).Offset)
 			{
 				l := uint32(len((*a).CellList))
-				binary.BigEndian.PutUint32(data[4:], l)
-				data = data[8:]
+				binary.BigEndian.PutUint32(data[0:], l)
+				data = data[4:]
 				for i := 0; uint32(i) < l; i++ {
 					a := &(*a).CellList[i]
 					binary.BigEndian.PutUint32(data[0:], uint32(int32((*a).UUID)))
@@ -716,23 +712,23 @@ func (p *SendPartitionTable) NEOMsgEncode(data []byte) {
 
 func (p *SendPartitionTable) NEOMsgDecode(data []byte) (int, error) {
 	var nread uint64
-	if len(data) < 12 {
+	if len(data) < 16 {
 		goto overflow
 	}
 	p.PTid = PTid(binary.BigEndian.Uint64(data[0 : 0+8]))
+	p.NumReplicas = binary.BigEndian.Uint32(data[8 : 8+4])
 	{
-		l := binary.BigEndian.Uint32(data[8 : 8+4])
-		data = data[12:]
+		l := binary.BigEndian.Uint32(data[12 : 12+4])
+		data = data[16:]
 		p.RowList = make([]RowInfo, l)
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.RowList[i]
-			if len(data) < 8 {
+			if len(data) < 4 {
 				goto overflow
 			}
-			(*a).Offset = binary.BigEndian.Uint32(data[0 : 0+4])
 			{
-				l := binary.BigEndian.Uint32(data[4 : 4+4])
-				data = data[8:]
+				l := binary.BigEndian.Uint32(data[0 : 0+4])
+				data = data[4:]
 				if uint64(len(data)) < uint64(l)*5 {
 					goto overflow
 				}
@@ -746,9 +742,9 @@ func (p *SendPartitionTable) NEOMsgDecode(data []byte) (int, error) {
 				}
 			}
 		}
-		nread += uint64(l) * 8
+		nread += uint64(l) * 4
 	}
-	return 12 + int(nread), nil
+	return 16 + int(nread), nil
 
 overflow:
 	return 0, ErrDecodeOverflow
@@ -761,15 +757,16 @@ func (*NotifyPartitionChanges) NEOMsgCode() uint16 {
 }
 
 func (p *NotifyPartitionChanges) NEOMsgEncodedLen() int {
-	return 12 + len(p.CellList)*9
+	return 16 + len(p.CellList)*9
 }
 
 func (p *NotifyPartitionChanges) NEOMsgEncode(data []byte) {
 	binary.BigEndian.PutUint64(data[0:], uint64(p.PTid))
+	binary.BigEndian.PutUint32(data[8:], p.NumReplicas)
 	{
 		l := uint32(len(p.CellList))
-		binary.BigEndian.PutUint32(data[8:], l)
-		data = data[12:]
+		binary.BigEndian.PutUint32(data[12:], l)
+		data = data[16:]
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.CellList[i]
 			binary.BigEndian.PutUint32(data[0:], (*a).Offset)
@@ -782,13 +779,14 @@ func (p *NotifyPartitionChanges) NEOMsgEncode(data []byte) {
 
 func (p *NotifyPartitionChanges) NEOMsgDecode(data []byte) (int, error) {
 	var nread uint64
-	if len(data) < 12 {
+	if len(data) < 16 {
 		goto overflow
 	}
 	p.PTid = PTid(binary.BigEndian.Uint64(data[0 : 0+8]))
+	p.NumReplicas = binary.BigEndian.Uint32(data[8 : 8+4])
 	{
-		l := binary.BigEndian.Uint32(data[8 : 8+4])
-		data = data[12:]
+		l := binary.BigEndian.Uint32(data[12 : 12+4])
+		data = data[16:]
 		if uint64(len(data)) < uint64(l)*9 {
 			goto overflow
 		}
@@ -805,7 +803,7 @@ func (p *NotifyPartitionChanges) NEOMsgDecode(data []byte) (int, error) {
 			data = data[9:]
 		}
 	}
-	return 12 + int(nread), nil
+	return 16 + int(nread), nil
 
 overflow:
 	return 0, ErrDecodeOverflow
@@ -2381,7 +2379,7 @@ func (p *AnswerPartitionList) NEOMsgEncodedLen() int {
 		a := &p.RowList[i]
 		size += len((*a).CellList) * 5
 	}
-	return 12 + len(p.RowList)*8 + size
+	return 12 + len(p.RowList)*4 + size
 }
 
 func (p *AnswerPartitionList) NEOMsgEncode(data []byte) {
@@ -2392,11 +2390,10 @@ func (p *AnswerPartitionList) NEOMsgEncode(data []byte) {
 		data = data[12:]
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.RowList[i]
-			binary.BigEndian.PutUint32(data[0:], (*a).Offset)
 			{
 				l := uint32(len((*a).CellList))
-				binary.BigEndian.PutUint32(data[4:], l)
-				data = data[8:]
+				binary.BigEndian.PutUint32(data[0:], l)
+				data = data[4:]
 				for i := 0; uint32(i) < l; i++ {
 					a := &(*a).CellList[i]
 					binary.BigEndian.PutUint32(data[0:], uint32(int32((*a).UUID)))
@@ -2421,13 +2418,12 @@ func (p *AnswerPartitionList) NEOMsgDecode(data []byte) (int, error) {
 		p.RowList = make([]RowInfo, l)
 		for i := 0; uint32(i) < l; i++ {
 			a := &p.RowList[i]
-			if len(data) < 8 {
+			if len(data) < 4 {
 				goto overflow
 			}
-			(*a).Offset = binary.BigEndian.Uint32(data[0 : 0+4])
 			{
-				l := binary.BigEndian.Uint32(data[4 : 4+4])
-				data = data[8:]
+				l := binary.BigEndian.Uint32(data[0 : 0+4])
+				data = data[4:]
 				if uint64(len(data)) < uint64(l)*5 {
 					goto overflow
 				}
@@ -2441,7 +2437,7 @@ func (p *AnswerPartitionList) NEOMsgDecode(data []byte) (int, error) {
 				}
 			}
 		}
-		nread += uint64(l) * 8
+		nread += uint64(l) * 4
 	}
 	return 12 + int(nread), nil
 
@@ -2682,12 +2678,37 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 41. SetClusterState
+// 41. SetNumReplicas
 
-func (*SetClusterState) NEOMsgCode() uint16 {
+func (*SetNumReplicas) NEOMsgCode() uint16 {
 	return 41
 }
 
+func (p *SetNumReplicas) NEOMsgEncodedLen() int {
+	return 4
+}
+
+func (p *SetNumReplicas) NEOMsgEncode(data []byte) {
+	binary.BigEndian.PutUint32(data[0:], p.NumReplicas)
+}
+
+func (p *SetNumReplicas) NEOMsgDecode(data []byte) (int, error) {
+	if len(data) < 4 {
+		goto overflow
+	}
+	p.NumReplicas = binary.BigEndian.Uint32(data[0 : 0+4])
+	return 4, nil
+
+overflow:
+	return 0, ErrDecodeOverflow
+}
+
+// 42. SetClusterState
+
+func (*SetClusterState) NEOMsgCode() uint16 {
+	return 42
+}
+
 func (p *SetClusterState) NEOMsgEncodedLen() int {
 	return 1
 }
@@ -2707,10 +2728,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 42. Repair
+// 43. Repair
 
 func (*Repair) NEOMsgCode() uint16 {
-	return 42
+	return 43
 }
 
 func (p *Repair) NEOMsgEncodedLen() int {
@@ -2757,10 +2778,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 43. RepairOne
+// 44. RepairOne
 
 func (*RepairOne) NEOMsgCode() uint16 {
-	return 43
+	return 44
 }
 
 func (p *RepairOne) NEOMsgEncodedLen() int {
@@ -2782,10 +2803,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 44. NotifyClusterState
+// 45. NotifyClusterState
 
 func (*NotifyClusterState) NEOMsgCode() uint16 {
-	return 44
+	return 45
 }
 
 func (p *NotifyClusterState) NEOMsgEncodedLen() int {
@@ -2807,10 +2828,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 45. AskClusterState
+// 46. AskClusterState
 
 func (*AskClusterState) NEOMsgCode() uint16 {
-	return 45
+	return 46
 }
 
 func (p *AskClusterState) NEOMsgEncodedLen() int {
@@ -2824,10 +2845,10 @@ func (p *AskClusterState) NEOMsgDecode(data []byte) (int, error) {
 	return 0, nil
 }
 
-// 45 | answerBit. AnswerClusterState
+// 46 | answerBit. AnswerClusterState
 
 func (*AnswerClusterState) NEOMsgCode() uint16 {
-	return 45 | answerBit
+	return 46 | answerBit
 }
 
 func (p *AnswerClusterState) NEOMsgEncodedLen() int {
@@ -2849,10 +2870,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 46. ObjectUndoSerial
+// 47. ObjectUndoSerial
 
 func (*ObjectUndoSerial) NEOMsgCode() uint16 {
-	return 46
+	return 47
 }
 
 func (p *ObjectUndoSerial) NEOMsgEncodedLen() int {
@@ -2903,10 +2924,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 46 | answerBit. AnswerObjectUndoSerial
+// 47 | answerBit. AnswerObjectUndoSerial
 
 func (*AnswerObjectUndoSerial) NEOMsgCode() uint16 {
-	return 46 | answerBit
+	return 47 | answerBit
 }
 
 func (p *AnswerObjectUndoSerial) NEOMsgEncodedLen() int {
@@ -2971,10 +2992,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 47. AskTIDsFrom
+// 48. AskTIDsFrom
 
 func (*AskTIDsFrom) NEOMsgCode() uint16 {
-	return 47
+	return 48
 }
 
 func (p *AskTIDsFrom) NEOMsgEncodedLen() int {
@@ -3002,10 +3023,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 47 | answerBit. AnswerTIDsFrom
+// 48 | answerBit. AnswerTIDsFrom
 
 func (*AnswerTIDsFrom) NEOMsgCode() uint16 {
-	return 47 | answerBit
+	return 48 | answerBit
 }
 
 func (p *AnswerTIDsFrom) NEOMsgEncodedLen() int {
@@ -3050,10 +3071,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 48. Pack
+// 49. Pack
 
 func (*Pack) NEOMsgCode() uint16 {
-	return 48
+	return 49
 }
 
 func (p *Pack) NEOMsgEncodedLen() int {
@@ -3075,10 +3096,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 48 | answerBit. AnswerPack
+// 49 | answerBit. AnswerPack
 
 func (*AnswerPack) NEOMsgCode() uint16 {
-	return 48 | answerBit
+	return 49 | answerBit
 }
 
 func (p *AnswerPack) NEOMsgEncodedLen() int {
@@ -3100,10 +3121,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 49. CheckReplicas
+// 50. CheckReplicas
 
 func (*CheckReplicas) NEOMsgCode() uint16 {
-	return 49
+	return 50
 }
 
 func (p *CheckReplicas) NEOMsgEncodedLen() int {
@@ -3158,10 +3179,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 50. CheckPartition
+// 51. CheckPartition
 
 func (*CheckPartition) NEOMsgCode() uint16 {
-	return 50
+	return 51
 }
 
 func (p *CheckPartition) NEOMsgEncodedLen() int {
@@ -3220,10 +3241,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 51. CheckTIDRange
+// 52. CheckTIDRange
 
 func (*CheckTIDRange) NEOMsgCode() uint16 {
-	return 51
+	return 52
 }
 
 func (p *CheckTIDRange) NEOMsgEncodedLen() int {
@@ -3251,10 +3272,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 51 | answerBit. AnswerCheckTIDRange
+// 52 | answerBit. AnswerCheckTIDRange
 
 func (*AnswerCheckTIDRange) NEOMsgCode() uint16 {
-	return 51 | answerBit
+	return 52 | answerBit
 }
 
 func (p *AnswerCheckTIDRange) NEOMsgEncodedLen() int {
@@ -3280,10 +3301,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 52. CheckSerialRange
+// 53. CheckSerialRange
 
 func (*CheckSerialRange) NEOMsgCode() uint16 {
-	return 52
+	return 53
 }
 
 func (p *CheckSerialRange) NEOMsgEncodedLen() int {
@@ -3313,10 +3334,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 52 | answerBit. AnswerCheckSerialRange
+// 53 | answerBit. AnswerCheckSerialRange
 
 func (*AnswerCheckSerialRange) NEOMsgCode() uint16 {
-	return 52 | answerBit
+	return 53 | answerBit
 }
 
 func (p *AnswerCheckSerialRange) NEOMsgEncodedLen() int {
@@ -3346,10 +3367,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 53. PartitionCorrupted
+// 54. PartitionCorrupted
 
 func (*PartitionCorrupted) NEOMsgCode() uint16 {
-	return 53
+	return 54
 }
 
 func (p *PartitionCorrupted) NEOMsgEncodedLen() int {
@@ -3396,10 +3417,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 54. NotifyReady
+// 55. NotifyReady
 
 func (*NotifyReady) NEOMsgCode() uint16 {
-	return 54
+	return 55
 }
 
 func (p *NotifyReady) NEOMsgEncodedLen() int {
@@ -3413,10 +3434,10 @@ func (p *NotifyReady) NEOMsgDecode(data []byte) (int, error) {
 	return 0, nil
 }
 
-// 55. LastTransaction
+// 56. LastTransaction
 
 func (*LastTransaction) NEOMsgCode() uint16 {
-	return 55
+	return 56
 }
 
 func (p *LastTransaction) NEOMsgEncodedLen() int {
@@ -3430,10 +3451,10 @@ func (p *LastTransaction) NEOMsgDecode(data []byte) (int, error) {
 	return 0, nil
 }
 
-// 55 | answerBit. AnswerLastTransaction
+// 56 | answerBit. AnswerLastTransaction
 
 func (*AnswerLastTransaction) NEOMsgCode() uint16 {
-	return 55 | answerBit
+	return 56 | answerBit
 }
 
 func (p *AnswerLastTransaction) NEOMsgEncodedLen() int {
@@ -3455,10 +3476,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 56. CheckCurrentSerial
+// 57. CheckCurrentSerial
 
 func (*CheckCurrentSerial) NEOMsgCode() uint16 {
-	return 56
+	return 57
 }
 
 func (p *CheckCurrentSerial) NEOMsgEncodedLen() int {
@@ -3484,10 +3505,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 56 | answerBit. AnswerCheckCurrentSerial
+// 57 | answerBit. AnswerCheckCurrentSerial
 
 func (*AnswerCheckCurrentSerial) NEOMsgCode() uint16 {
-	return 56 | answerBit
+	return 57 | answerBit
 }
 
 func (p *AnswerCheckCurrentSerial) NEOMsgEncodedLen() int {
@@ -3509,10 +3530,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 57. NotifyTransactionFinished
+// 58. NotifyTransactionFinished
 
 func (*NotifyTransactionFinished) NEOMsgCode() uint16 {
-	return 57
+	return 58
 }
 
 func (p *NotifyTransactionFinished) NEOMsgEncodedLen() int {
@@ -3536,10 +3557,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 58. Replicate
+// 59. Replicate
 
 func (*Replicate) NEOMsgCode() uint16 {
-	return 58
+	return 59
 }
 
 func (p *Replicate) NEOMsgEncodedLen() int {
@@ -3627,10 +3648,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 59. ReplicationDone
+// 60. ReplicationDone
 
 func (*ReplicationDone) NEOMsgCode() uint16 {
-	return 59
+	return 60
 }
 
 func (p *ReplicationDone) NEOMsgEncodedLen() int {
@@ -3654,10 +3675,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 60. FetchTransactions
+// 61. FetchTransactions
 
 func (*FetchTransactions) NEOMsgCode() uint16 {
-	return 60
+	return 61
 }
 
 func (p *FetchTransactions) NEOMsgEncodedLen() int {
@@ -3710,10 +3731,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 60 | answerBit. AnswerFetchTransactions
+// 61 | answerBit. AnswerFetchTransactions
 
 func (*AnswerFetchTransactions) NEOMsgCode() uint16 {
-	return 60 | answerBit
+	return 61 | answerBit
 }
 
 func (p *AnswerFetchTransactions) NEOMsgEncodedLen() int {
@@ -3762,10 +3783,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 61. FetchObjects
+// 62. FetchObjects
 
 func (*FetchObjects) NEOMsgCode() uint16 {
-	return 61
+	return 62
 }
 
 func (p *FetchObjects) NEOMsgEncodedLen() int {
@@ -3853,10 +3874,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 61 | answerBit. AnswerFetchObjects
+// 62 | answerBit. AnswerFetchObjects
 
 func (*AnswerFetchObjects) NEOMsgCode() uint16 {
-	return 61 | answerBit
+	return 62 | answerBit
 }
 
 func (p *AnswerFetchObjects) NEOMsgEncodedLen() int {
@@ -3940,10 +3961,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 62. AddTransaction
+// 63. AddTransaction
 
 func (*AddTransaction) NEOMsgCode() uint16 {
-	return 62
+	return 63
 }
 
 func (p *AddTransaction) NEOMsgEncodedLen() int {
@@ -4045,10 +4066,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 63. AddObject
+// 64. AddObject
 
 func (*AddObject) NEOMsgCode() uint16 {
-	return 63
+	return 64
 }
 
 func (p *AddObject) NEOMsgEncodedLen() int {
@@ -4097,10 +4118,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 64. Truncate
+// 65. Truncate
 
 func (*Truncate) NEOMsgCode() uint16 {
-	return 64
+	return 65
 }
 
 func (p *Truncate) NEOMsgEncodedLen() int {
@@ -4122,10 +4143,10 @@ overflow:
 	return 0, ErrDecodeOverflow
 }
 
-// 65. FlushLog
+// 66. FlushLog
 
 func (*FlushLog) NEOMsgCode() uint16 {
-	return 65
+	return 66
 }
 
 func (p *FlushLog) NEOMsgEncodedLen() int {
@@ -4206,39 +4227,40 @@ var msgTypeRegistry = map[uint16]reflect.Type{
 	38:             reflect.TypeOf(SetNodeState{}),
 	39:             reflect.TypeOf(AddPendingNodes{}),
 	40:             reflect.TypeOf(TweakPartitionTable{}),
-	41:             reflect.TypeOf(SetClusterState{}),
-	42:             reflect.TypeOf(Repair{}),
-	43:             reflect.TypeOf(RepairOne{}),
-	44:             reflect.TypeOf(NotifyClusterState{}),
-	45:             reflect.TypeOf(AskClusterState{}),
-	45 | answerBit: reflect.TypeOf(AnswerClusterState{}),
-	46:             reflect.TypeOf(ObjectUndoSerial{}),
-	46 | answerBit: reflect.TypeOf(AnswerObjectUndoSerial{}),
-	47:             reflect.TypeOf(AskTIDsFrom{}),
-	47 | answerBit: reflect.TypeOf(AnswerTIDsFrom{}),
-	48:             reflect.TypeOf(Pack{}),
-	48 | answerBit: reflect.TypeOf(AnswerPack{}),
-	49:             reflect.TypeOf(CheckReplicas{}),
-	50:             reflect.TypeOf(CheckPartition{}),
-	51:             reflect.TypeOf(CheckTIDRange{}),
-	51 | answerBit: reflect.TypeOf(AnswerCheckTIDRange{}),
-	52:             reflect.TypeOf(CheckSerialRange{}),
-	52 | answerBit: reflect.TypeOf(AnswerCheckSerialRange{}),
-	53:             reflect.TypeOf(PartitionCorrupted{}),
-	54:             reflect.TypeOf(NotifyReady{}),
-	55:             reflect.TypeOf(LastTransaction{}),
-	55 | answerBit: reflect.TypeOf(AnswerLastTransaction{}),
-	56:             reflect.TypeOf(CheckCurrentSerial{}),
-	56 | answerBit: reflect.TypeOf(AnswerCheckCurrentSerial{}),
-	57:             reflect.TypeOf(NotifyTransactionFinished{}),
-	58:             reflect.TypeOf(Replicate{}),
-	59:             reflect.TypeOf(ReplicationDone{}),
-	60:             reflect.TypeOf(FetchTransactions{}),
-	60 | answerBit: reflect.TypeOf(AnswerFetchTransactions{}),
-	61:             reflect.TypeOf(FetchObjects{}),
-	61 | answerBit: reflect.TypeOf(AnswerFetchObjects{}),
-	62:             reflect.TypeOf(AddTransaction{}),
-	63:             reflect.TypeOf(AddObject{}),
-	64:             reflect.TypeOf(Truncate{}),
-	65:             reflect.TypeOf(FlushLog{}),
+	41:             reflect.TypeOf(SetNumReplicas{}),
+	42:             reflect.TypeOf(SetClusterState{}),
+	43:             reflect.TypeOf(Repair{}),
+	44:             reflect.TypeOf(RepairOne{}),
+	45:             reflect.TypeOf(NotifyClusterState{}),
+	46:             reflect.TypeOf(AskClusterState{}),
+	46 | answerBit: reflect.TypeOf(AnswerClusterState{}),
+	47:             reflect.TypeOf(ObjectUndoSerial{}),
+	47 | answerBit: reflect.TypeOf(AnswerObjectUndoSerial{}),
+	48:             reflect.TypeOf(AskTIDsFrom{}),
+	48 | answerBit: reflect.TypeOf(AnswerTIDsFrom{}),
+	49:             reflect.TypeOf(Pack{}),
+	49 | answerBit: reflect.TypeOf(AnswerPack{}),
+	50:             reflect.TypeOf(CheckReplicas{}),
+	51:             reflect.TypeOf(CheckPartition{}),
+	52:             reflect.TypeOf(CheckTIDRange{}),
+	52 | answerBit: reflect.TypeOf(AnswerCheckTIDRange{}),
+	53:             reflect.TypeOf(CheckSerialRange{}),
+	53 | answerBit: reflect.TypeOf(AnswerCheckSerialRange{}),
+	54:             reflect.TypeOf(PartitionCorrupted{}),
+	55:             reflect.TypeOf(NotifyReady{}),
+	56:             reflect.TypeOf(LastTransaction{}),
+	56 | answerBit: reflect.TypeOf(AnswerLastTransaction{}),
+	57:             reflect.TypeOf(CheckCurrentSerial{}),
+	57 | answerBit: reflect.TypeOf(AnswerCheckCurrentSerial{}),
+	58:             reflect.TypeOf(NotifyTransactionFinished{}),
+	59:             reflect.TypeOf(Replicate{}),
+	60:             reflect.TypeOf(ReplicationDone{}),
+	61:             reflect.TypeOf(FetchTransactions{}),
+	61 | answerBit: reflect.TypeOf(AnswerFetchTransactions{}),
+	62:             reflect.TypeOf(FetchObjects{}),
+	62 | answerBit: reflect.TypeOf(AnswerFetchObjects{}),
+	63:             reflect.TypeOf(AddTransaction{}),
+	64:             reflect.TypeOf(AddObject{}),
+	65:             reflect.TypeOf(Truncate{}),
+	66:             reflect.TypeOf(FlushLog{}),
 }

go/neo/proto/ztestdata_proto_py_test.go

@@ -42,31 +42,32 @@ var pyMsgRegistry = map[uint16]string{
 	38:	"SetNodeState",
 	39:	"AddPendingNodes",
 	40:	"TweakPartitionTable",
-	41:	"SetClusterState",
-	42:	"Repair",
-	43:	"RepairOne",
-	44:	"NotifyClusterState",
-	45:	"AskClusterState",
-	46:	"ObjectUndoSerial",
-	47:	"AskTIDsFrom",
-	48:	"Pack",
-	49:	"CheckReplicas",
-	50:	"CheckPartition",
-	51:	"CheckTIDRange",
-	52:	"CheckSerialRange",
-	53:	"PartitionCorrupted",
-	54:	"NotifyReady",
-	55:	"LastTransaction",
-	56:	"CheckCurrentSerial",
-	57:	"NotifyTransactionFinished",
-	58:	"Replicate",
-	59:	"ReplicationDone",
-	60:	"FetchTransactions",
-	61:	"FetchObjects",
-	62:	"AddTransaction",
-	63:	"AddObject",
-	64:	"Truncate",
-	65:	"FlushLog",
+	41:	"SetNumReplicas",
+	42:	"SetClusterState",
+	43:	"Repair",
+	44:	"RepairOne",
+	45:	"NotifyClusterState",
+	46:	"AskClusterState",
+	47:	"ObjectUndoSerial",
+	48:	"AskTIDsFrom",
+	49:	"Pack",
+	50:	"CheckReplicas",
+	51:	"CheckPartition",
+	52:	"CheckTIDRange",
+	53:	"CheckSerialRange",
+	54:	"PartitionCorrupted",
+	55:	"NotifyReady",
+	56:	"LastTransaction",
+	57:	"CheckCurrentSerial",
+	58:	"NotifyTransactionFinished",
+	59:	"Replicate",
+	60:	"ReplicationDone",
+	61:	"FetchTransactions",
+	62:	"FetchObjects",
+	63:	"AddTransaction",
+	64:	"AddObject",
+	65:	"Truncate",
+	66:	"FlushLog",
 	32768:	"Error",
 	32769:	"AcceptIdentification",
 	32770:	"Pong",
@@ -92,14 +93,14 @@ var pyMsgRegistry = map[uint16]string{
 	32803:	"AnswerObjectHistory",
 	32804:	"AnswerPartitionList",
 	32805:	"AnswerNodeList",
-	32813:	"AnswerClusterState",
-	32814:	"AnswerObjectUndoSerial",
-	32815:	"AnswerTIDsFrom",
-	32816:	"AnswerPack",
-	32819:	"AnswerCheckTIDRange",
-	32820:	"AnswerCheckSerialRange",
-	32823:	"AnswerLastTransaction",
-	32824:	"AnswerCheckCurrentSerial",
-	32828:	"AnswerFetchTransactions",
-	32829:	"AnswerFetchObjects",
+	32814:	"AnswerClusterState",
+	32815:	"AnswerObjectUndoSerial",
+	32816:	"AnswerTIDsFrom",
+	32817:	"AnswerPack",
+	32820:	"AnswerCheckTIDRange",
+	32821:	"AnswerCheckSerialRange",
+	32824:	"AnswerLastTransaction",
+	32825:	"AnswerCheckCurrentSerial",
+	32829:	"AnswerFetchTransactions",
+	32830:	"AnswerFetchObjects",
 }

go/neo/storage.go

@@ -203,10 +203,13 @@ func (stor *Storage) talkMaster1(ctx context.Context) (err error) {
 
 	// XXX add master UUID -> nodeTab ? or master will notify us with it himself ?
 
+// XXX move -> SetNumReplicas handler
+/*
 	// NumReplicas: neo/py meaning for n(replica) = `n(real-replica) - 1`
 	if !(accept.NumPartitions == 1 && accept.NumReplicas == 0) {
 		return fmt.Errorf("TODO for 1-storage POC: Npt: %v  Nreplica: %v", accept.NumPartitions, accept.NumReplicas)
 	}
+*/
 
 	// XXX -> node.Dial ?
 	if accept.YourUUID != stor.node.MyInfo.UUID {
@@ -285,6 +288,7 @@ func (stor *Storage) m1initialize1(ctx context.Context, req neonet.Request) erro
 		// TODO initially read PT from disk
 		err = req.Reply(&proto.AnswerPartitionTable{
 			PTid:	     stor.node.PartTab.PTid,
+			NumReplicas: 0, // FIXME hardcoded; NEO/py uses this as n(replica)-1
 			RowList:     stor.node.PartTab.Dump()})
 
 	case *proto.LockedTransactions:
@@ -304,7 +308,7 @@ func (stor *Storage) m1initialize1(ctx context.Context, req neonet.Request) erro
 
 	case *proto.SendPartitionTable:
 		// TODO M sends us whole PT -> save locally
-		stor.node.UpdatePartTab(ctx, msg)	// XXX lock?
+		stor.node.UpdatePartTab(ctx, msg)	// XXX lock?  XXX handle msg.NumReplicas
 
 	case *proto.NotifyPartitionChanges:
 		// TODO M sends us δPT -> save locally?
@@ -412,8 +416,6 @@ func (stor *Storage) identify(idReq *proto.RequestIdentification) (proto.Msg, bo
 	return &proto.AcceptIdentification{
 		NodeType:	stor.node.MyInfo.Type,
 		MyUUID:		stor.node.MyInfo.UUID,		// XXX lock wrt update
-		NumPartitions:	1,	// XXX
-		NumReplicas:	0,	// XXX
 		YourUUID:	idReq.UUID,
 	}, true
 }