Optimize dml_channels (#5783)

* update timetickSync::UpdateTimeTick

Signed-off-by: yudong.cai <yudong.cai@zilliz.com>

* update dml_channels.go

Signed-off-by: yudong.cai <yudong.cai@zilliz.com>

* fix unittest

Signed-off-by: yudong.cai <yudong.cai@zilliz.com>

* remove ProduceAll and BroadcastAll

Signed-off-by: yudong.cai <yudong.cai@zilliz.com>

internal/masterservice/dml_channels.go

@@ -20,117 +20,111 @@ import (
 	"go.uber.org/zap"
 )
 
+type dmlStream struct {
+	msgStream msgstream.MsgStream
+	valid     bool
+}
+
 type dmlChannels struct {
 	core *Core
 	lock sync.RWMutex
-	dml  map[string]msgstream.MsgStream
+	dml  map[string]*dmlStream
 }
 
 func newDMLChannels(c *Core) *dmlChannels {
 	return &dmlChannels{
 		core: c,
 		lock: sync.RWMutex{},
-		dml:  make(map[string]msgstream.MsgStream),
+		dml:  make(map[string]*dmlStream),
 	}
 }
 
 func (d *dmlChannels) GetNumChannles() int {
 	d.lock.RLock()
 	defer d.lock.RUnlock()
-	return len(d.dml)
+	count := 0
-}
+	for _, ds := range d.dml {
-
+		if ds.valid {
-func (d *dmlChannels) ProduceAll(pack *msgstream.MsgPack) {
+			count++
-	d.lock.RLock()
-	defer d.lock.RUnlock()
-
-	for n, ms := range d.dml {
-		if err := ms.Produce(pack); err != nil {
-			log.Debug("msgstream produce error", zap.String("name", n), zap.Error(err))
-		}
-	}
-}
-
-func (d *dmlChannels) BroadcastMany(channels []string, pack *msgstream.MsgPack) error {
-	d.lock.RLock()
-	defer d.lock.RUnlock()
-	for _, ch := range channels {
-		ms, ok := d.dml[ch]
-		if !ok {
-			return fmt.Errorf("channel %s not exist", ch)
-		}
-		if err := ms.Broadcast(pack); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (d *dmlChannels) BroadcastAll(pack *msgstream.MsgPack) {
-	d.lock.RLock()
-	defer d.lock.RUnlock()
-
-	for n, ms := range d.dml {
-		if err := ms.Broadcast(pack); err != nil {
-			log.Debug("msgstream broadcast error", zap.String("name", n), zap.Error(err))
 		}
 	}
+	return count
 }
 
 func (d *dmlChannels) Produce(name string, pack *msgstream.MsgPack) error {
 	d.lock.Lock()
 	defer d.lock.Unlock()
 
-	var err error
+	ds, ok := d.dml[name]
-	ms, ok := d.dml[name]
 	if !ok {
-		ms, err = d.core.msFactory.NewMsgStream(d.core.ctx)
+		return fmt.Errorf("channel %s not exist", name)
-		if err != nil {
-			return fmt.Errorf("create mstream failed, name = %s, error=%w", name, err)
 	}
-		ms.AsProducer([]string{name})
+	if err := ds.msgStream.Produce(pack); err != nil {
-		d.dml[name] = ms
+		return err
 	}
-	return ms.Produce(pack)
+	if !ds.valid {
-
+		ds.msgStream.Close()
+		delete(d.dml, name)
+	}
+	return nil
 }
 
 func (d *dmlChannels) Broadcast(name string, pack *msgstream.MsgPack) error {
 	d.lock.Lock()
 	defer d.lock.Unlock()
 
-	if len(name) == 0 {
+	ds, ok := d.dml[name]
-		return fmt.Errorf("channel name is empty")
-	}
-	var err error
-	ms, ok := d.dml[name]
 	if !ok {
-		ms, err = d.core.msFactory.NewMsgStream(d.core.ctx)
+		return fmt.Errorf("channel %s not exist", name)
-		if err != nil {
-			return fmt.Errorf("create msgtream failed, name = %s, error=%w", name, err)
 	}
-		ms.AsProducer([]string{name})
+	if err := ds.msgStream.Broadcast(pack); err != nil {
-		d.dml[name] = ms
+		return err
 	}
-	return ms.Broadcast(pack)
+	if !ds.valid {
+		ds.msgStream.Close()
+		delete(d.dml, name)
+	}
+	return nil
+}
+
+func (d *dmlChannels) BroadcastAll(channels []string, pack *msgstream.MsgPack) error {
+	d.lock.Lock()
+	defer d.lock.Unlock()
+
+	for _, ch := range channels {
+		ds, ok := d.dml[ch]
+		if !ok {
+			return fmt.Errorf("channel %s not exist", ch)
+		}
+		if err := ds.msgStream.Broadcast(pack); err != nil {
+			return err
+		}
+		if !ds.valid {
+			ds.msgStream.Close()
+			delete(d.dml, ch)
+		}
+	}
+	return nil
 }
 
 func (d *dmlChannels) AddProducerChannels(names ...string) {
 	d.lock.Lock()
 	defer d.lock.Unlock()
 
-	var err error
 	for _, name := range names {
 		log.Debug("add dml channel", zap.String("channel name", name))
-		ms, ok := d.dml[name]
+		_, ok := d.dml[name]
 		if !ok {
-			ms, err = d.core.msFactory.NewMsgStream(d.core.ctx)
+			ms, err := d.core.msFactory.NewMsgStream(d.core.ctx)
 			if err != nil {
 				log.Debug("add msgstream failed", zap.String("name", name), zap.Error(err))
 				continue
 			}
 			ms.AsProducer([]string{name})
-			d.dml[name] = ms
+			d.dml[name] = &dmlStream{
+				msgStream: ms,
+				valid:     true,
+			}
 		}
 	}
 }
@@ -141,22 +135,8 @@ func (d *dmlChannels) RemoveProducerChannels(names ...string) {
 
 	for _, name := range names {
 		log.Debug("delete dml channel", zap.String("channel name", name))
-		if ms, ok := d.dml[name]; ok {
+		if ds, ok := d.dml[name]; ok {
-			ms.Close()
+			ds.valid = false
-			delete(d.dml, name)
 		}
 	}
 }
-
-func (d *dmlChannels) HasChannel(names ...string) bool {
-	d.lock.Lock()
-	defer d.lock.Unlock()
-
-	for _, name := range names {
-		if _, ok := d.dml[name]; !ok {
-			log.Debug("unknown channel", zap.String("channel name", name))
-			return false
-		}
-	}
-	return true
-}

internal/masterservice/master_service.go

@@ -602,7 +602,7 @@ func (c *Core) setMsgStreams() error {
 			CreateCollectionRequest: *req,
 		}
 		msgPack.Msgs = append(msgPack.Msgs, msg)
-		return c.dmlChannels.BroadcastMany(channelNames, &msgPack)
+		return c.dmlChannels.BroadcastAll(channelNames, &msgPack)
 	}
 
 	c.SendDdDropCollectionReq = func(ctx context.Context, req *internalpb.DropCollectionRequest, channelNames []string) error {
@@ -618,7 +618,7 @@ func (c *Core) setMsgStreams() error {
 			DropCollectionRequest: *req,
 		}
 		msgPack.Msgs = append(msgPack.Msgs, msg)
-		return c.dmlChannels.BroadcastMany(channelNames, &msgPack)
+		return c.dmlChannels.BroadcastAll(channelNames, &msgPack)
 	}
 
 	c.SendDdCreatePartitionReq = func(ctx context.Context, req *internalpb.CreatePartitionRequest, channelNames []string) error {
@@ -634,7 +634,7 @@ func (c *Core) setMsgStreams() error {
 			CreatePartitionRequest: *req,
 		}
 		msgPack.Msgs = append(msgPack.Msgs, msg)
-		return c.dmlChannels.BroadcastMany(channelNames, &msgPack)
+		return c.dmlChannels.BroadcastAll(channelNames, &msgPack)
 	}
 
 	c.SendDdDropPartitionReq = func(ctx context.Context, req *internalpb.DropPartitionRequest, channelNames []string) error {
@@ -650,7 +650,7 @@ func (c *Core) setMsgStreams() error {
 			DropPartitionRequest: *req,
 		}
 		msgPack.Msgs = append(msgPack.Msgs, msg)
-		return c.dmlChannels.BroadcastMany(channelNames, &msgPack)
+		return c.dmlChannels.BroadcastAll(channelNames, &msgPack)
 	}
 
 	if Params.DataServiceSegmentChannel == "" {
@@ -1885,12 +1885,6 @@ func (c *Core) UpdateChannelTimeTick(ctx context.Context, in *internalpb.Channel
 		status.Reason = fmt.Sprintf("UpdateChannelTimeTick receive invalid message %d", in.Base.GetMsgType())
 		return status, nil
 	}
-	if !c.dmlChannels.HasChannel(in.ChannelNames...) {
-		log.Debug("update time tick with unkonw channel", zap.Int("input channel size", len(in.ChannelNames)), zap.Strings("input channels", in.ChannelNames))
-		status.ErrorCode = commonpb.ErrorCode_UnexpectedError
-		status.Reason = fmt.Sprintf("update time tick with unknown channel name, input channels = %v", in.ChannelNames)
-		return status, nil
-	}
 	err := c.chanTimeTick.UpdateTimeTick(in)
 	if err != nil {
 		status.ErrorCode = commonpb.ErrorCode_UnexpectedError

internal/masterservice/timeticksync.go

@@ -45,14 +45,14 @@ func newTimeTickSync(core *Core) *timetickSync {
 // sendToChannel send all channels' timetick to sendChan
 // lock is needed by the invoker
 func (t *timetickSync) sendToChannel() {
+	if len(t.proxyTimeTick) == 0 {
+		return
+	}
 	for _, v := range t.proxyTimeTick {
 		if v == nil {
 			return
 		}
 	}
-	if len(t.proxyTimeTick) == 0 {
-		return
-	}
 	// clear proxyTimeTick and send a clone
 	ptt := make(map[typeutil.UniqueID]*internalpb.ChannelTimeTickMsg)
 	for k, v := range t.proxyTimeTick {
@@ -77,10 +77,12 @@ func (t *timetickSync) UpdateTimeTick(in *internalpb.ChannelTimeTickMsg) error {
 	if !ok {
 		return fmt.Errorf("Skip ChannelTimeTickMsg from un-recognized proxy node %d", in.Base.SourceID)
 	}
+	if in.Base.SourceID == t.core.session.ServerID {
 		if prev != nil && prev.Timestamps[0] >= in.Timestamps[0] {
 			log.Debug("timestamp go back", zap.Int64("source id", in.Base.SourceID), zap.Uint64("prev ts", prev.Timestamps[0]), zap.Uint64("curr ts", in.Timestamps[0]))
 			return nil
 		}
+	}
 	t.proxyTimeTick[in.Base.SourceID] = in
 	t.sendToChannel()
 	return nil