From 5b69f5fba6da4b3f1a29b29c325726d4d7248794 Mon Sep 17 00:00:00 2001
From: aoiasd <zhicheng.yue@zilliz.com>
Date: Thu, 9 Feb 2023 00:52:40 +0800
Subject: [PATCH] Add tickle for datacoord watch event

Signed-off-by: aoiasd <zhicheng.yue@zilliz.com>
---
 configs/milvus.yaml                          |   2 +-
 internal/datacoord/channel_checker.go        |  46 +-
 internal/datacoord/channel_checker_test.go   |  44 +-
 internal/datacoord/channel_manager.go        |  31 +-
 internal/datacoord/channel_manager_test.go   |  23 +-
 internal/datacoord/policy.go                 |   4 +-
 internal/datacoord/policy_test.go            |   4 +-
 internal/datanode/data_node.go               |  17 +-
 internal/datanode/data_node_test.go          |  25 +-
 internal/datanode/data_sync_service.go       |  13 +-
 internal/datanode/data_sync_service_test.go  |   5 +-
 internal/datanode/event_manager.go           | 144 +++--
 internal/datanode/event_manager_test.go      | 213 ++-----
 internal/datanode/flow_graph_manager.go      |   4 +-
 internal/datanode/flow_graph_manager_test.go |   8 +-
 internal/datanode/mock_test.go               |  21 +
 internal/datanode/services_test.go           |  18 +-
 internal/proto/data_coord.proto              |   4 +-
 internal/proto/datapb/data_coord.pb.go       | 596 ++++++++++---------
 internal/util/paramtable/component_param.go  |  31 +-
 20 files changed, 641 insertions(+), 612 deletions(-)

diff --git a/configs/milvus.yaml b/configs/milvus.yaml
index 389f8e6d4cc3..447878fb4d38 100644
--- a/configs/milvus.yaml
+++ b/configs/milvus.yaml
@@ -280,7 +280,7 @@ dataCoord:
   enableActiveStandby: false  # Enable active-standby
 
   channel:
-    maxWatchDuration: 600 # Timeout on watching channels (in seconds). Default 600 seconds.
+    watchTimeoutInterval: 30 # Timeout on watching channels (in seconds). Datanode tickler update watch progress will reset timeout timer.
 
   segment:
     maxSize: 512 # Maximum size of a segment in MB
diff --git a/internal/datacoord/channel_checker.go b/internal/datacoord/channel_checker.go
index 723bc45f0524..03f400f8bfa0 100644
--- a/internal/datacoord/channel_checker.go
+++ b/internal/datacoord/channel_checker.go
@@ -33,10 +33,12 @@ import (
 )
 
 type channelStateTimer struct {
-	watchkv        kv.MetaKv
-	runningTimers  sync.Map // channel name to timer stop channels
-	etcdWatcher    clientv3.WatchChan
-	timeoutWatcher chan *ackEvent
+	watchkv kv.MetaKv
+
+	runningTimers     sync.Map
+	runningTimerStops sync.Map // channel name to timer stop channels
+	etcdWatcher       clientv3.WatchChan
+	timeoutWatcher    chan *ackEvent
 }
 
 func newChannelStateTimer(kv kv.MetaKv) *channelStateTimer {
@@ -49,7 +51,6 @@ func newChannelStateTimer(kv kv.MetaKv) *channelStateTimer {
 func (c *channelStateTimer) getWatchers(prefix string) (clientv3.WatchChan, chan *ackEvent) {
 	if c.etcdWatcher == nil {
 		c.etcdWatcher = c.watchkv.WatchWithPrefix(prefix)
-
 	}
 	return c.etcdWatcher, c.timeoutWatcher
 }
@@ -80,8 +81,8 @@ func (c *channelStateTimer) loadAllChannels(nodeID UniqueID) ([]*datapb.ChannelW
 }
 
 // startOne can write ToWatch or ToRelease states.
-func (c *channelStateTimer) startOne(watchState datapb.ChannelWatchState, channelName string, nodeID UniqueID, timeoutTs int64) {
-	if timeoutTs == 0 {
+func (c *channelStateTimer) startOne(watchState datapb.ChannelWatchState, channelName string, nodeID UniqueID, timeout time.Duration) {
+	if timeout == 0 {
 		log.Info("zero timeoutTs, skip starting timer",
 			zap.String("watch state", watchState.String()),
 			zap.Int64("nodeID", nodeID),
@@ -89,23 +90,29 @@ func (c *channelStateTimer) startOne(watchState datapb.ChannelWatchState, channe
 		)
 		return
 	}
+
 	stop := make(chan struct{})
+	ticker := time.NewTimer(timeout)
 	c.removeTimers([]string{channelName})
-	c.runningTimers.Store(channelName, stop)
-	timeoutT := time.Unix(0, timeoutTs)
+	c.runningTimerStops.Store(channelName, stop)
+	c.runningTimers.Store(channelName, ticker)
+
 	go func() {
 		log.Info("timer started",
 			zap.String("watch state", watchState.String()),
 			zap.Int64("nodeID", nodeID),
 			zap.String("channel name", channelName),
-			zap.Time("timeout time", timeoutT))
+			zap.Duration("check interval", timeout))
+		defer ticker.Stop()
+
 		select {
-		case <-time.NewTimer(time.Until(timeoutT)).C:
+		case <-ticker.C:
+			// check tickle at path as :tickle/[prefix]/{channel_name}
 			log.Info("timeout and stop timer: wait for channel ACK timeout",
 				zap.String("watch state", watchState.String()),
 				zap.Int64("nodeID", nodeID),
 				zap.String("channel name", channelName),
-				zap.Time("timeout time", timeoutT))
+				zap.Duration("timeout interval", timeout))
 			ackType := getAckType(watchState)
 			c.notifyTimeoutWatcher(&ackEvent{ackType, channelName, nodeID})
 		case <-stop:
@@ -113,7 +120,7 @@ func (c *channelStateTimer) startOne(watchState datapb.ChannelWatchState, channe
 				zap.String("watch state", watchState.String()),
 				zap.Int64("nodeID", nodeID),
 				zap.String("channel name", channelName),
-				zap.Time("timeout time", timeoutT))
+				zap.Duration("timeout interval", timeout))
 		}
 	}()
 }
@@ -124,16 +131,25 @@ func (c *channelStateTimer) notifyTimeoutWatcher(e *ackEvent) {
 
 func (c *channelStateTimer) removeTimers(channels []string) {
 	for _, channel := range channels {
-		if stop, ok := c.runningTimers.LoadAndDelete(channel); ok {
+		if stop, ok := c.runningTimerStops.LoadAndDelete(channel); ok {
 			close(stop.(chan struct{}))
+			c.runningTimers.Delete(channel)
 		}
 	}
 }
 
 func (c *channelStateTimer) stopIfExist(e *ackEvent) {
-	stop, ok := c.runningTimers.LoadAndDelete(e.channelName)
+	stop, ok := c.runningTimerStops.LoadAndDelete(e.channelName)
 	if ok && e.ackType != watchTimeoutAck && e.ackType != releaseTimeoutAck {
 		close(stop.(chan struct{}))
+		c.runningTimers.Delete(e.channelName)
+	}
+}
+
+func (c *channelStateTimer) resetIfExist(channel string, interval time.Duration) {
+	if value, ok := c.runningTimers.Load(channel); ok {
+		timer := value.(*time.Timer)
+		timer.Reset(interval)
 	}
 }
 
diff --git a/internal/datacoord/channel_checker_test.go b/internal/datacoord/channel_checker_test.go
index 0c4488c3e1d2..57259cca3587 100644
--- a/internal/datacoord/channel_checker_test.go
+++ b/internal/datacoord/channel_checker_test.go
@@ -52,10 +52,9 @@ func TestChannelStateTimer(t *testing.T) {
 		timer.loadAllChannels(1)
 
 		validWatchInfo := datapb.ChannelWatchInfo{
-			Vchan:     &datapb.VchannelInfo{},
-			StartTs:   time.Now().Unix(),
-			State:     datapb.ChannelWatchState_ToWatch,
-			TimeoutTs: time.Now().Add(20 * time.Millisecond).UnixNano(),
+			Vchan:   &datapb.VchannelInfo{},
+			StartTs: time.Now().Unix(),
+			State:   datapb.ChannelWatchState_ToWatch,
 		}
 		validData, err := proto.Marshal(&validWatchInfo)
 		require.NoError(t, err)
@@ -87,18 +86,20 @@ func TestChannelStateTimer(t *testing.T) {
 	})
 
 	t.Run("test startOne", func(t *testing.T) {
-		normalTimeoutTs := time.Now().Add(20 * time.Second).UnixNano()
-		nowTimeoutTs := time.Now().UnixNano()
-		zeroTimeoutTs := int64(0)
+		normalTimeoutTs := 20 * time.Second
+		nowTimeoutTs := 1 * time.Millisecond
+		zeroTimeoutTs := 0 * time.Second
+		resetTimeoutTs := 30 * time.Second
 		tests := []struct {
 			channelName string
-			timeoutTs   int64
+			timeoutTs   time.Duration
 
 			description string
 		}{
 			{"channel-1", normalTimeoutTs, "test stop"},
 			{"channel-2", nowTimeoutTs, "test timeout"},
 			{"channel-3", zeroTimeoutTs, "not start"},
+			{"channel-4", resetTimeoutTs, "reset timer"},
 		}
 
 		timer := newChannelStateTimer(kv)
@@ -112,6 +113,11 @@ func TestChannelStateTimer(t *testing.T) {
 					e := <-timeoutCh
 					assert.Equal(t, watchTimeoutAck, e.ackType)
 					assert.Equal(t, test.channelName, e.channelName)
+				} else if test.timeoutTs == resetTimeoutTs {
+					timer.resetIfExist(test.channelName, nowTimeoutTs)
+					e := <-timeoutCh
+					assert.Equal(t, watchTimeoutAck, e.ackType)
+					assert.Equal(t, test.channelName, e.channelName)
 				} else {
 					timer.stopIfExist(&ackEvent{watchSuccessAck, test.channelName, 1})
 				}
@@ -123,18 +129,17 @@ func TestChannelStateTimer(t *testing.T) {
 	})
 
 	t.Run("test startOne no leaking issue 17335", func(t *testing.T) {
-		timeoutTs := time.Now().Add(20 * time.Second).UnixNano()
 		timer := newChannelStateTimer(kv)
 
-		timer.startOne(datapb.ChannelWatchState_ToRelease, "channel-1", 1, timeoutTs)
-		stop, ok := timer.runningTimers.Load("channel-1")
+		timer.startOne(datapb.ChannelWatchState_ToRelease, "channel-1", 1, 20*time.Second)
+		stop, ok := timer.runningTimerStops.Load("channel-1")
 		require.True(t, ok)
 
-		timer.startOne(datapb.ChannelWatchState_ToWatch, "channel-1", 1, timeoutTs)
+		timer.startOne(datapb.ChannelWatchState_ToWatch, "channel-1", 1, 20*time.Second)
 		_, ok = <-stop.(chan struct{})
 		assert.False(t, ok)
 
-		stop2, ok := timer.runningTimers.Load("channel-1")
+		stop2, ok := timer.runningTimerStops.Load("channel-1")
 		assert.True(t, ok)
 
 		timer.removeTimers([]string{"channel-1"})
@@ -151,10 +156,9 @@ func TestChannelStateTimer_parses(t *testing.T) {
 
 	t.Run("test parseWatchInfo", func(t *testing.T) {
 		validWatchInfo := datapb.ChannelWatchInfo{
-			Vchan:     &datapb.VchannelInfo{},
-			StartTs:   time.Now().Unix(),
-			State:     datapb.ChannelWatchState_ToWatch,
-			TimeoutTs: time.Now().Add(20 * time.Millisecond).UnixNano(),
+			Vchan:   &datapb.VchannelInfo{},
+			StartTs: time.Now().Unix(),
+			State:   datapb.ChannelWatchState_ToWatch,
 		}
 		validData, err := proto.Marshal(&validWatchInfo)
 		require.NoError(t, err)
@@ -186,7 +190,6 @@ func TestChannelStateTimer_parses(t *testing.T) {
 					assert.NotNil(t, info)
 					assert.Equal(t, info.GetState(), validWatchInfo.GetState())
 					assert.Equal(t, info.GetStartTs(), validWatchInfo.GetStartTs())
-					assert.Equal(t, info.GetTimeoutTs(), validWatchInfo.GetTimeoutTs())
 				} else {
 					assert.Nil(t, info)
 					assert.Error(t, err)
@@ -205,9 +208,8 @@ func TestChannelStateTimer_parses(t *testing.T) {
 				DroppedSegments:     []*datapb.SegmentInfo{{ID: 3}},
 				UnflushedSegmentIds: []int64{1},
 			},
-			StartTs:   time.Now().Unix(),
-			State:     datapb.ChannelWatchState_ToWatch,
-			TimeoutTs: time.Now().Add(20 * time.Millisecond).UnixNano(),
+			StartTs: time.Now().Unix(),
+			State:   datapb.ChannelWatchState_ToWatch,
 		}
 
 		oldData, err := proto.Marshal(&oldWatchInfo)
diff --git a/internal/datacoord/channel_manager.go b/internal/datacoord/channel_manager.go
index 07852f1dd9a5..08ee0c6341ab 100644
--- a/internal/datacoord/channel_manager.go
+++ b/internal/datacoord/channel_manager.go
@@ -192,6 +192,7 @@ func (c *ChannelManager) checkOldNodes(nodes []UniqueID) error {
 	for nodeID, watchInfos := range nodeWatchInfos {
 		for _, info := range watchInfos {
 			channelName := info.GetVchan().GetChannelName()
+			checkInterval := Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second)
 
 			log.Info("processing watch info",
 				zap.String("watch state", info.GetState().String()),
@@ -199,7 +200,7 @@ func (c *ChannelManager) checkOldNodes(nodes []UniqueID) error {
 
 			switch info.GetState() {
 			case datapb.ChannelWatchState_ToWatch, datapb.ChannelWatchState_Uncomplete:
-				c.stateTimer.startOne(datapb.ChannelWatchState_ToWatch, channelName, nodeID, info.GetTimeoutTs())
+				c.stateTimer.startOne(datapb.ChannelWatchState_ToWatch, channelName, nodeID, checkInterval)
 
 			case datapb.ChannelWatchState_WatchFailure:
 				if err := c.Release(nodeID, channelName); err != nil {
@@ -207,7 +208,7 @@ func (c *ChannelManager) checkOldNodes(nodes []UniqueID) error {
 				}
 
 			case datapb.ChannelWatchState_ToRelease:
-				c.stateTimer.startOne(datapb.ChannelWatchState_ToRelease, channelName, nodeID, info.GetTimeoutTs())
+				c.stateTimer.startOne(datapb.ChannelWatchState_ToRelease, channelName, nodeID, checkInterval)
 
 			case datapb.ChannelWatchState_ReleaseSuccess:
 				if err := c.Reassign(nodeID, channelName); err != nil {
@@ -446,11 +447,10 @@ func (c *ChannelManager) fillChannelWatchInfo(op *ChannelOp) {
 	for _, ch := range op.Channels {
 		vcInfo := c.h.GetDataVChanPositions(ch, allPartitionID)
 		info := &datapb.ChannelWatchInfo{
-			Vchan:     vcInfo,
-			StartTs:   time.Now().Unix(),
-			State:     datapb.ChannelWatchState_Uncomplete,
-			TimeoutTs: time.Now().Add(Params.DataCoordCfg.MaxWatchDuration.GetAsDuration(time.Second)).UnixNano(),
-			Schema:    ch.Schema,
+			Vchan:   vcInfo,
+			StartTs: time.Now().Unix(),
+			State:   datapb.ChannelWatchState_Uncomplete,
+			Schema:  ch.Schema,
 		}
 		op.ChannelWatchInfos = append(op.ChannelWatchInfos, info)
 	}
@@ -460,20 +460,19 @@ func (c *ChannelManager) fillChannelWatchInfo(op *ChannelOp) {
 func (c *ChannelManager) fillChannelWatchInfoWithState(op *ChannelOp, state datapb.ChannelWatchState) []string {
 	var channelsWithTimer = []string{}
 	startTs := time.Now().Unix()
-	timeoutTs := time.Now().Add(Params.DataCoordCfg.MaxWatchDuration.GetAsDuration(time.Second)).UnixNano()
+	checkInterval := Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second)
 	for _, ch := range op.Channels {
 		vcInfo := c.h.GetDataVChanPositions(ch, allPartitionID)
 		info := &datapb.ChannelWatchInfo{
-			Vchan:     vcInfo,
-			StartTs:   startTs,
-			State:     state,
-			TimeoutTs: timeoutTs,
-			Schema:    ch.Schema,
+			Vchan:   vcInfo,
+			StartTs: startTs,
+			State:   state,
+			Schema:  ch.Schema,
 		}
 
 		// Only set timer for watchInfo not from bufferID
 		if op.NodeID != bufferID {
-			c.stateTimer.startOne(state, ch.Name, op.NodeID, timeoutTs)
+			c.stateTimer.startOne(state, ch.Name, op.NodeID, checkInterval)
 			channelsWithTimer = append(channelsWithTimer, ch.Name)
 		}
 
@@ -696,11 +695,13 @@ func (c *ChannelManager) watchChannelStatesLoop(ctx context.Context) {
 					continue
 				}
 
-				// ignore these states
+				// runnging states
 				state := watchInfo.GetState()
 				if state == datapb.ChannelWatchState_ToWatch ||
 					state == datapb.ChannelWatchState_ToRelease ||
 					state == datapb.ChannelWatchState_Uncomplete {
+					c.stateTimer.resetIfExist(watchInfo.GetVchan().ChannelName, Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second))
+					log.Info("tickle update, timer delay", zap.String("channel", watchInfo.GetVchan().ChannelName), zap.Int32("progress", watchInfo.Progress))
 					continue
 				}
 
diff --git a/internal/datacoord/channel_manager_test.go b/internal/datacoord/channel_manager_test.go
index 5892af1ef21f..af5b148d6836 100644
--- a/internal/datacoord/channel_manager_test.go
+++ b/internal/datacoord/channel_manager_test.go
@@ -127,7 +127,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 		waitAndCheckState(t, metakv, datapb.ChannelWatchState_WatchSuccess, nodeID, cName, collectionID)
 
 		assert.Eventually(t, func() bool {
-			_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+			_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 			return !loaded
 		}, waitFor, tick)
 
@@ -157,7 +157,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 		waitAndCheckState(t, metakv, datapb.ChannelWatchState_ToRelease, nodeID, cName, collectionID)
 
 		assert.Eventually(t, func() bool {
-			_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+			_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 			return loaded
 		}, waitFor, tick)
 
@@ -193,7 +193,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 
 		waitAndCheckState(t, metakv, datapb.ChannelWatchState_ToRelease, nodeID, cName, collectionID)
 		assert.Eventually(t, func() bool {
-			_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+			_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 			return loaded
 		}, waitFor, tick)
 
@@ -242,7 +242,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 		assert.Error(t, err)
 		assert.Empty(t, w)
 
-		_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+		_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 		assert.True(t, loaded)
 		chManager.stateTimer.removeTimers([]string{cName})
 	})
@@ -279,7 +279,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 		waitAndCheckState(t, metakv, datapb.ChannelWatchState_ToWatch, nodeID, cName, collectionID)
 
 		assert.Eventually(t, func() bool {
-			_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+			_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 			return loaded
 		}, waitFor, tick)
 		cancel()
@@ -331,7 +331,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 		assert.Error(t, err)
 		assert.Empty(t, w)
 
-		_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+		_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 		assert.True(t, loaded)
 		chManager.stateTimer.removeTimers([]string{cName})
 	})
@@ -370,7 +370,7 @@ func TestChannelManager_StateTransfer(t *testing.T) {
 
 		waitAndCheckState(t, metakv, datapb.ChannelWatchState_ToWatch, nodeID, cName, collectionID)
 		assert.Eventually(t, func() bool {
-			_, loaded := chManager.stateTimer.runningTimers.Load(cName)
+			_, loaded := chManager.stateTimer.runningTimerStops.Load(cName)
 			return loaded
 		}, waitFor, tick)
 
@@ -585,7 +585,7 @@ func TestChannelManager(t *testing.T) {
 				bufferID: {bufferID, []*channel{}},
 			},
 		}
-		chManager.stateTimer.startOne(datapb.ChannelWatchState_ToRelease, "channel-1", 1, time.Now().Add(Params.DataCoordCfg.MaxWatchDuration.GetAsDuration(time.Second)).UnixNano())
+		chManager.stateTimer.startOne(datapb.ChannelWatchState_ToRelease, "channel-1", 1, Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second))
 
 		err = chManager.DeleteNode(1)
 		assert.NoError(t, err)
@@ -755,8 +755,7 @@ func TestChannelManager_Reload(t *testing.T) {
 				CollectionID: collectionID,
 				ChannelName:  channelName,
 			},
-			State:     state,
-			TimeoutTs: time.Now().Add(20 * time.Second).UnixNano(),
+			State: state,
 		}
 	}
 
@@ -773,7 +772,7 @@ func TestChannelManager_Reload(t *testing.T) {
 			require.NoError(t, err)
 
 			chManager.checkOldNodes([]UniqueID{nodeID})
-			_, ok := chManager.stateTimer.runningTimers.Load(channelName)
+			_, ok := chManager.stateTimer.runningTimerStops.Load(channelName)
 			assert.True(t, ok)
 			chManager.stateTimer.removeTimers([]string{channelName})
 		})
@@ -789,7 +788,7 @@ func TestChannelManager_Reload(t *testing.T) {
 			err = chManager.checkOldNodes([]UniqueID{nodeID})
 			assert.NoError(t, err)
 
-			_, ok := chManager.stateTimer.runningTimers.Load(channelName)
+			_, ok := chManager.stateTimer.runningTimerStops.Load(channelName)
 			assert.True(t, ok)
 			chManager.stateTimer.removeTimers([]string{channelName})
 		})
diff --git a/internal/datacoord/policy.go b/internal/datacoord/policy.go
index 486ec7b96a3a..8160a6d3a13a 100644
--- a/internal/datacoord/policy.go
+++ b/internal/datacoord/policy.go
@@ -455,14 +455,14 @@ func BgCheckWithMaxWatchDuration(kv kv.TxnKV) ChannelBGChecker {
 					return nil, err
 				}
 				reviseVChannelInfo(watchInfo.GetVchan())
-				// if a channel is not watched after maxWatchDuration,
+				// if a channel is not watched or update watch progress after WatchTimeoutInterval,
 				// then we reallocate it to another node
 				if watchInfo.State == datapb.ChannelWatchState_Complete || watchInfo.State == datapb.ChannelWatchState_WatchSuccess {
 					continue
 				}
 				startTime := time.Unix(watchInfo.StartTs, 0)
 				d := ts.Sub(startTime)
-				if d >= Params.DataCoordCfg.MaxWatchDuration.GetAsDuration(time.Second) {
+				if d >= Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second) {
 					cinfo.Channels = append(cinfo.Channels, c)
 				}
 			}
diff --git a/internal/datacoord/policy_test.go b/internal/datacoord/policy_test.go
index fcb70d782b85..bc933f52f40a 100644
--- a/internal/datacoord/policy_test.go
+++ b/internal/datacoord/policy_test.go
@@ -402,7 +402,7 @@ func TestBgCheckWithMaxWatchDuration(t *testing.T) {
 				getKv([]*watch{{1, "chan1", &datapb.ChannelWatchInfo{StartTs: ts.Unix(), State: datapb.ChannelWatchState_Uncomplete}},
 					{1, "chan2", &datapb.ChannelWatchInfo{StartTs: ts.Unix(), State: datapb.ChannelWatchState_Complete}}}),
 				[]*NodeChannelInfo{{1, []*channel{{Name: "chan1", CollectionID: 1}, {Name: "chan2", CollectionID: 1}}}},
-				ts.Add(Params.DataCoordCfg.MaxWatchDuration.GetAsDuration(time.Second)),
+				ts.Add(Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second)),
 			},
 			[]*NodeChannelInfo{{1, []*channel{{Name: "chan1", CollectionID: 1}}}},
 			nil,
@@ -412,7 +412,7 @@ func TestBgCheckWithMaxWatchDuration(t *testing.T) {
 			args{
 				getKv([]*watch{{1, "chan1", &datapb.ChannelWatchInfo{StartTs: ts.Unix(), State: datapb.ChannelWatchState_Uncomplete}}}),
 				[]*NodeChannelInfo{{1, []*channel{{Name: "chan1", CollectionID: 1}}}},
-				ts.Add(Params.DataCoordCfg.MaxWatchDuration.GetAsDuration(time.Second)).Add(-time.Second),
+				ts.Add(Params.DataCoordCfg.WatchTimeoutInterval.GetAsDuration(time.Second)).Add(-time.Second),
 			},
 			[]*NodeChannelInfo{},
 			nil,
diff --git a/internal/datanode/data_node.go b/internal/datanode/data_node.go
index 5483cbea200c..f30f6be9ba5d 100644
--- a/internal/datanode/data_node.go
+++ b/internal/datanode/data_node.go
@@ -363,6 +363,11 @@ func (node *DataNode) handleWatchInfo(e *event, key string, data []byte) {
 			return
 		}
 
+		if watchInfo.Progress != 0 {
+			log.Info("DataNode received a PUT event with tickler update progress", zap.String("channel", watchInfo.Vchan.ChannelName), zap.Int64("version", e.version))
+			return
+		}
+
 		e.info = watchInfo
 		e.vChanName = watchInfo.GetVchan().GetChannelName()
 		log.Info("DataNode is handling watchInfo PUT event", zap.String("key", key), zap.Any("watch state", watchInfo.GetState().String()))
@@ -410,9 +415,13 @@ func parseDeleteEventKey(key string) string {
 
 func (node *DataNode) handlePutEvent(watchInfo *datapb.ChannelWatchInfo, version int64) (err error) {
 	vChanName := watchInfo.GetVchan().GetChannelName()
+	key := path.Join(Params.CommonCfg.DataCoordWatchSubPath.GetValue(), fmt.Sprintf("%d", node.GetSession().ServerID), vChanName)
+	tickler := newTickler(version, key, watchInfo, node.watchKv, Params.DataNodeCfg.WatchEventTicklerInterval.GetAsDuration(time.Second))
+
 	switch watchInfo.State {
 	case datapb.ChannelWatchState_Uncomplete, datapb.ChannelWatchState_ToWatch:
-		if err := node.flowgraphManager.addAndStart(node, watchInfo.GetVchan(), watchInfo.GetSchema()); err != nil {
+		if err := node.flowgraphManager.addAndStart(node, watchInfo.GetVchan(), watchInfo.GetSchema(), tickler); err != nil {
+			watchInfo.State = datapb.ChannelWatchState_WatchFailure
 			return fmt.Errorf("fail to add and start flowgraph for vChanName: %s, err: %v", vChanName, err)
 		}
 		log.Info("handle put event: new data sync service success", zap.String("vChanName", vChanName))
@@ -429,10 +438,8 @@ func (node *DataNode) handlePutEvent(watchInfo *datapb.ChannelWatchInfo, version
 		return fmt.Errorf("fail to marshal watchInfo with state, vChanName: %s, state: %s ,err: %w", vChanName, watchInfo.State.String(), err)
 	}
 
-	key := path.Join(Params.CommonCfg.DataCoordWatchSubPath.GetValue(), fmt.Sprintf("%d", node.GetSession().ServerID), vChanName)
-
-	success, err := node.watchKv.CompareVersionAndSwap(key, version, string(v))
-	// etcd error, retrying
+	success, err := node.watchKv.CompareVersionAndSwap(key, tickler.version, string(v))
+	// etcd error
 	if err != nil {
 		// flow graph will leak if not release, causing new datanode failed to subscribe
 		node.tryToReleaseFlowgraph(vChanName)
diff --git a/internal/datanode/data_node_test.go b/internal/datanode/data_node_test.go
index 02a60cc9ee3d..ef4aa062a727 100644
--- a/internal/datanode/data_node_test.go
+++ b/internal/datanode/data_node_test.go
@@ -206,7 +206,7 @@ func TestDataNode(t *testing.T) {
 
 		for i, test := range testDataSyncs {
 			if i <= 2 {
-				err = node.flowgraphManager.addAndStart(node, &datapb.VchannelInfo{CollectionID: 1, ChannelName: test.dmChannelName}, nil)
+				err = node.flowgraphManager.addAndStart(node, &datapb.VchannelInfo{CollectionID: 1, ChannelName: test.dmChannelName}, nil, genTestTickler())
 				assert.Nil(t, err)
 				vchanNameCh <- test.dmChannelName
 			}
@@ -277,9 +277,8 @@ func TestWatchChannel(t *testing.T) {
 			UnflushedSegmentIds: []int64{},
 		}
 		info := &datapb.ChannelWatchInfo{
-			State:     datapb.ChannelWatchState_ToWatch,
-			Vchan:     vchan,
-			TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+			State: datapb.ChannelWatchState_ToWatch,
+			Vchan: vchan,
 		}
 		val, err := proto.Marshal(info)
 		assert.Nil(t, err)
@@ -336,9 +335,8 @@ func TestWatchChannel(t *testing.T) {
 			UnflushedSegmentIds: []int64{},
 		}
 		info := &datapb.ChannelWatchInfo{
-			State:     datapb.ChannelWatchState_ToRelease,
-			Vchan:     vchan,
-			TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+			State: datapb.ChannelWatchState_ToRelease,
+			Vchan: vchan,
 		}
 		val, err := proto.Marshal(info)
 		assert.Nil(t, err)
@@ -400,9 +398,8 @@ func TestWatchChannel(t *testing.T) {
 		m.Run()
 
 		info = datapb.ChannelWatchInfo{
-			Vchan:     &datapb.VchannelInfo{ChannelName: ch},
-			State:     datapb.ChannelWatchState_Uncomplete,
-			TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+			Vchan: &datapb.VchannelInfo{ChannelName: ch},
+			State: datapb.ChannelWatchState_Uncomplete,
 		}
 		bs, err = proto.Marshal(&info)
 		assert.NoError(t, err)
@@ -441,9 +438,8 @@ func TestWatchChannel(t *testing.T) {
 		}
 
 		info := datapb.ChannelWatchInfo{
-			Vchan:     &datapb.VchannelInfo{ChannelName: ch},
-			State:     datapb.ChannelWatchState_Uncomplete,
-			TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+			Vchan: &datapb.VchannelInfo{ChannelName: ch},
+			State: datapb.ChannelWatchState_Uncomplete,
 		}
 		bs, err := proto.Marshal(&info)
 		assert.NoError(t, err)
@@ -464,8 +460,7 @@ func TestWatchChannel(t *testing.T) {
 				DroppedSegments:     []*datapb.SegmentInfo{{ID: 3}},
 				UnflushedSegmentIds: []int64{1},
 			},
-			State:     datapb.ChannelWatchState_Uncomplete,
-			TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+			State: datapb.ChannelWatchState_Uncomplete,
 		}
 		bs, err := proto.Marshal(&info)
 		assert.NoError(t, err)
diff --git a/internal/datanode/data_sync_service.go b/internal/datanode/data_sync_service.go
index b6f510dca024..04cbb448c56f 100644
--- a/internal/datanode/data_sync_service.go
+++ b/internal/datanode/data_sync_service.go
@@ -25,6 +25,7 @@ import (
 	"go.uber.org/zap"
 
 	"github.com/milvus-io/milvus-proto/go-api/commonpb"
+	"github.com/milvus-io/milvus/internal/kv"
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/metrics"
 	"github.com/milvus-io/milvus/internal/mq/msgdispatcher"
@@ -63,6 +64,7 @@ type dataSyncService struct {
 	chunkManager     storage.ChunkManager
 	compactor        *compactionExecutor // reference to compaction executor
 
+	kv            kv.MetaKv
 	serverID      int64
 	stopOnce      sync.Once
 	flushListener chan *segmentFlushPack // chan to listen flush event
@@ -81,6 +83,7 @@ func newDataSyncService(ctx context.Context,
 	flushingSegCache *Cache,
 	chunkManager storage.ChunkManager,
 	compactor *compactionExecutor,
+	tickler *tickler,
 	serverID int64,
 ) (*dataSyncService, error) {
 
@@ -117,7 +120,7 @@ func newDataSyncService(ctx context.Context,
 		serverID:         serverID,
 	}
 
-	if err := service.initNodes(vchan); err != nil {
+	if err := service.initNodes(vchan, tickler); err != nil {
 		return nil, err
 	}
 	return service, nil
@@ -179,7 +182,7 @@ func (dsService *dataSyncService) clearGlobalFlushingCache() {
 }
 
 // initNodes inits a TimetickedFlowGraph
-func (dsService *dataSyncService) initNodes(vchanInfo *datapb.VchannelInfo) error {
+func (dsService *dataSyncService) initNodes(vchanInfo *datapb.VchannelInfo, tickler *tickler) error {
 	dsService.fg = flowgraph.NewTimeTickedFlowGraph(dsService.ctx)
 	// initialize flush manager for DataSync Service
 	dsService.flushManager = NewRendezvousFlushManager(dsService.idAllocator, dsService.chunkManager, dsService.channel,
@@ -235,6 +238,7 @@ func (dsService *dataSyncService) initNodes(vchanInfo *datapb.VchannelInfo) erro
 				recoverTs:    vchanInfo.GetSeekPosition().GetTimestamp()}); err != nil {
 				return nil, err
 			}
+			tickler.inc()
 			return nil, nil
 		})
 		futures = append(futures, future)
@@ -270,11 +274,16 @@ func (dsService *dataSyncService) initNodes(vchanInfo *datapb.VchannelInfo) erro
 			}); err != nil {
 				return nil, err
 			}
+			tickler.inc()
 			return nil, nil
 		})
 		futures = append(futures, future)
 	}
 
+	//tickler will update addSegment progress to watchInfo
+	tickler.watch()
+	defer tickler.stop()
+
 	err = concurrency.AwaitAll(futures...)
 	if err != nil {
 		return err
diff --git a/internal/datanode/data_sync_service_test.go b/internal/datanode/data_sync_service_test.go
index bce6da48fb35..be82d929c647 100644
--- a/internal/datanode/data_sync_service_test.go
+++ b/internal/datanode/data_sync_service_test.go
@@ -181,6 +181,7 @@ func TestDataSyncService_newDataSyncService(te *testing.T) {
 				newCache(),
 				cm,
 				newCompactionExecutor(),
+				genTestTickler(),
 				0,
 			)
 
@@ -279,7 +280,7 @@ func TestDataSyncService_Start(t *testing.T) {
 		},
 	}
 
-	sync, err := newDataSyncService(ctx, flushChan, resendTTChan, channel, allocFactory, dispClient, factory, vchan, signalCh, dataCoord, newCache(), cm, newCompactionExecutor(), 0)
+	sync, err := newDataSyncService(ctx, flushChan, resendTTChan, channel, allocFactory, dispClient, factory, vchan, signalCh, dataCoord, newCache(), cm, newCompactionExecutor(), genTestTickler(), 0)
 	assert.Nil(t, err)
 
 	sync.flushListener = make(chan *segmentFlushPack)
@@ -431,7 +432,7 @@ func TestDataSyncService_Close(t *testing.T) {
 	paramtable.Get().Reset(Params.DataNodeCfg.FlushInsertBufferSize.Key)
 
 	channel := newChannel(insertChannelName, collMeta.ID, collMeta.GetSchema(), mockRootCoord, cm)
-	sync, err := newDataSyncService(ctx, flushChan, resendTTChan, channel, allocFactory, dispClient, factory, vchan, signalCh, mockDataCoord, newCache(), cm, newCompactionExecutor(), 0)
+	sync, err := newDataSyncService(ctx, flushChan, resendTTChan, channel, allocFactory, dispClient, factory, vchan, signalCh, mockDataCoord, newCache(), cm, newCompactionExecutor(), genTestTickler(), 0)
 	assert.Nil(t, err)
 
 	sync.flushListener = make(chan *segmentFlushPack, 10)
diff --git a/internal/datanode/event_manager.go b/internal/datanode/event_manager.go
index c6980291d1e5..946473bb9ab6 100644
--- a/internal/datanode/event_manager.go
+++ b/internal/datanode/event_manager.go
@@ -20,9 +20,11 @@ import (
 	"sync"
 	"time"
 
+	"github.com/golang/protobuf/proto"
+	"github.com/milvus-io/milvus/internal/kv"
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/proto/datapb"
-
+	"go.uber.org/atomic"
 	"go.uber.org/zap"
 )
 
@@ -67,7 +69,7 @@ func (e *channelEventManager) Run() {
 			case event := <-e.eventChan:
 				switch event.eventType {
 				case putEventType:
-					e.retryHandlePutEvent(event)
+					e.handlePutEvent(event.info, event.version)
 				case deleteEventType:
 					e.handleDeleteEvent(event.vChanName)
 				}
@@ -78,77 +80,103 @@ func (e *channelEventManager) Run() {
 	}()
 }
 
-func (e *channelEventManager) retryHandlePutEvent(event event) {
-	countdown := time.Until(time.Unix(0, event.info.TimeoutTs))
-	if countdown < 0 {
-		log.Warn("event already timed out", zap.String("vChanName", event.vChanName))
+func (e *channelEventManager) handleEvent(event event) {
+	e.eventChan <- event
+}
+
+func (e *channelEventManager) Close() {
+	e.Do(func() {
+		close(e.closeChan)
+	})
+}
+
+func isEndWatchState(state datapb.ChannelWatchState) bool {
+	return state != datapb.ChannelWatchState_ToWatch && // start watch
+		state != datapb.ChannelWatchState_ToRelease && // start release
+		state != datapb.ChannelWatchState_Uncomplete // legacy state, equal to ToWatch
+}
+
+type tickler struct {
+	progress *atomic.Int32
+	version  int64
+
+	kv        kv.MetaKv
+	path      string
+	watchInfo *datapb.ChannelWatchInfo
+
+	interval time.Duration
+	closeCh  chan struct{}
+	closeWg  sync.WaitGroup
+}
+
+func (t *tickler) inc() {
+	t.progress.Inc()
+}
+
+func (t *tickler) watch() {
+	if t.interval == 0 {
+		log.Info("zero interval, close ticler watch",
+			zap.String("channel name", t.watchInfo.GetVchan().GetChannelName()),
+		)
 		return
 	}
-	// Trigger retry for-loop when fail to handle put event for the first time
-	if err := e.handlePutEvent(event.info, event.version); err != nil {
-		timer := time.NewTimer(countdown)
-		defer timer.Stop()
-		ticker := time.NewTicker(e.retryInterval)
-		defer ticker.Stop()
-		for {
-			log.Warn("handle put event fail, starting retry",
-				zap.String("vChanName", event.vChanName),
-				zap.String("retry interval", e.retryInterval.String()),
-				zap.Error(err))
-
-			// reset the ticker
-			ticker.Reset(e.retryInterval)
 
+	t.closeWg.Add(1)
+	ticker := time.NewTicker(t.interval)
+	go func() {
+		for {
 			select {
 			case <-ticker.C:
-				// ticker notify, do another retry
-			case <-timer.C:
-				// timeout
-				log.Warn("event process timed out", zap.String("vChanName", event.vChanName))
-				return
-			case evt, ok := <-e.eventChan:
-				if !ok {
-					log.Warn("event channel closed", zap.String("vChanName", event.vChanName))
+				nowProgress := t.progress.Load()
+				if t.watchInfo.Progress == nowProgress {
+					continue
+				}
+
+				t.watchInfo.Progress = nowProgress
+				v, err := proto.Marshal(t.watchInfo)
+				if err != nil {
+					log.Error("fail to marshal watchInfo with progress at tickler",
+						zap.String("vChanName", t.watchInfo.Vchan.ChannelName),
+						zap.Int32("progree", nowProgress),
+						zap.Error(err))
 					return
 				}
-				// When got another put event, overwrite current event
-				if evt.eventType == putEventType {
-					// handles only Uncomplete, ToWatch and ToRelease
-					if isEndWatchState(evt.info.State) {
-						return
-					}
-					event = evt
+				success, err := t.kv.CompareVersionAndSwap(t.path, t.version, string(v))
+				if err != nil {
+					log.Error("tickler update failed", zap.Error(err))
+					continue
 				}
-				// When getting a delete event at next retry, exit retry loop
-				// When getting a put event, just continue the retry
-				if evt.eventType == deleteEventType {
-					log.Warn("delete event triggerred, terminating retry.",
-						zap.String("vChanName", event.vChanName))
-					e.handleDeleteEvent(evt.vChanName)
+
+				if !success {
+					log.Error("tickler update failed: failed to compare version and swap",
+						zap.String("key", t.path), zap.Int32("progress", nowProgress), zap.Int64("version", t.version),
+						zap.String("vChanName", t.watchInfo.GetVchan().ChannelName))
 					return
 				}
-			}
-			err = e.handlePutEvent(event.info, event.version)
-			if err == nil {
-				log.Info("handle put event successfully", zap.String("vChanName", event.vChanName))
+				log.Debug("tickler update success", zap.Int32("progress", nowProgress), zap.Int64("version", t.version),
+					zap.String("vChanName", t.watchInfo.GetVchan().ChannelName))
+				t.version++
+			case <-t.closeCh:
+				t.closeWg.Done()
 				return
 			}
 		}
-	}
-}
-
-func (e *channelEventManager) handleEvent(event event) {
-	e.eventChan <- event
+	}()
 }
 
-func (e *channelEventManager) Close() {
-	e.Do(func() {
-		close(e.closeChan)
-	})
+func (t *tickler) stop() {
+	close(t.closeCh)
+	t.closeWg.Wait()
 }
 
-func isEndWatchState(state datapb.ChannelWatchState) bool {
-	return state != datapb.ChannelWatchState_ToWatch && // start watch
-		state != datapb.ChannelWatchState_ToRelease && // start release
-		state != datapb.ChannelWatchState_Uncomplete // legacy state, equal to ToWatch
+func newTickler(version int64, path string, watchInfo *datapb.ChannelWatchInfo, kv kv.MetaKv, interval time.Duration) *tickler {
+	return &tickler{
+		progress:  atomic.NewInt32(0),
+		path:      path,
+		kv:        kv,
+		watchInfo: watchInfo,
+		version:   version,
+		interval:  interval,
+		closeCh:   make(chan struct{}),
+	}
 }
diff --git a/internal/datanode/event_manager_test.go b/internal/datanode/event_manager_test.go
index 39f2907b17b5..46a34455499f 100644
--- a/internal/datanode/event_manager_test.go
+++ b/internal/datanode/event_manager_test.go
@@ -18,12 +18,14 @@ package datanode
 
 import (
 	"errors"
+	"fmt"
+	"path"
 	"testing"
 	"time"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/milvus-io/milvus/internal/proto/datapb"
 	"github.com/stretchr/testify/assert"
-	"go.uber.org/atomic"
 )
 
 func TestChannelEventManager(t *testing.T) {
@@ -41,97 +43,12 @@ func TestChannelEventManager(t *testing.T) {
 			eventType: putEventType,
 			vChanName: "",
 			version:   0,
-			info: &datapb.ChannelWatchInfo{
-				TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
-			},
-		})
-		<-ch
-		assert.True(t, ran)
-	})
-
-	t.Run("event already timeout", func(t *testing.T) {
-		ch := make(chan struct{}, 1)
-		ran := false
-		em := newChannelEventManager(func(info *datapb.ChannelWatchInfo, version int64) error {
-			ran = true
-			ch <- struct{}{}
-			return nil
-		}, func(name string) {}, time.Millisecond*10)
-
-		em.Run()
-		em.handleEvent(event{
-			eventType: putEventType,
-			vChanName: "",
-			version:   0,
-			info: &datapb.ChannelWatchInfo{
-				TimeoutTs: time.Now().Add(-time.Minute).UnixNano(),
-			},
-		})
-		select {
-		case <-ch:
-			t.FailNow()
-		case <-time.NewTimer(time.Millisecond * 100).C:
-		}
-		assert.False(t, ran)
-	})
-
-	t.Run("retry success", func(t *testing.T) {
-		ch := make(chan struct{}, 1)
-		ran := false
-		counter := atomic.Int32{}
-		counter.Store(0)
-		em := newChannelEventManager(func(info *datapb.ChannelWatchInfo, version int64) error {
-			current := counter.Add(1)
-			if current == 2 {
-				ran = true
-				ch <- struct{}{}
-				return nil
-			}
-
-			return errors.New("mocked error")
-		}, func(name string) {}, time.Millisecond*10)
-
-		em.Run()
-		em.handleEvent(event{
-			eventType: putEventType,
-			vChanName: "",
-			version:   0,
-			info: &datapb.ChannelWatchInfo{
-				TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
-			},
+			info:      &datapb.ChannelWatchInfo{},
 		})
 		<-ch
 		assert.True(t, ran)
 	})
 
-	t.Run("retry until timeout", func(t *testing.T) {
-		em := newChannelEventManager(func(info *datapb.ChannelWatchInfo, version int64) error {
-			return errors.New("mocked error")
-		}, func(name string) {}, time.Millisecond*100)
-
-		ch := make(chan struct{}, 1)
-
-		go func() {
-			ddl := time.Now().Add(time.Millisecond * 50)
-			evt := event{
-				eventType: putEventType,
-				vChanName: "",
-				version:   0,
-				info: &datapb.ChannelWatchInfo{
-					TimeoutTs: ddl.UnixNano(),
-				},
-			}
-			em.retryHandlePutEvent(evt)
-			ch <- struct{}{}
-		}()
-
-		select {
-		case <-ch:
-		case <-time.NewTimer(time.Second).C:
-			t.FailNow()
-		}
-	})
-
 	t.Run("close behavior", func(t *testing.T) {
 		ch := make(chan struct{}, 1)
 		em := newChannelEventManager(func(info *datapb.ChannelWatchInfo, version int64) error {
@@ -139,25 +56,22 @@ func TestChannelEventManager(t *testing.T) {
 		}, func(name string) {}, time.Millisecond*10)
 
 		go func() {
-			ddl := time.Now().Add(time.Minute)
 			evt := event{
 				eventType: putEventType,
 				vChanName: "",
 				version:   0,
-				info: &datapb.ChannelWatchInfo{
-					TimeoutTs: ddl.UnixNano(),
-				},
+				info:      &datapb.ChannelWatchInfo{},
 			}
-			em.retryHandlePutEvent(evt)
+			em.handleEvent(evt)
 			ch <- struct{}{}
 		}()
 
-		close(em.eventChan)
 		select {
 		case <-ch:
 		case <-time.NewTimer(time.Second).C:
 			t.FailNow()
 		}
+		close(em.eventChan)
 
 		assert.NotPanics(t, func() {
 			em.Close()
@@ -183,17 +97,13 @@ func TestChannelEventManager(t *testing.T) {
 			eventType: putEventType,
 			vChanName: "",
 			version:   0,
-			info: &datapb.ChannelWatchInfo{
-				TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
-			},
+			info:      &datapb.ChannelWatchInfo{},
 		})
 		em.handleEvent(event{
 			eventType: deleteEventType,
 			vChanName: "",
 			version:   0,
-			info: &datapb.ChannelWatchInfo{
-				TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
-			},
+			info:      &datapb.ChannelWatchInfo{},
 		})
 		<-ch
 		assert.True(t, ran)
@@ -219,8 +129,7 @@ func TestChannelEventManager(t *testing.T) {
 			vChanName: "",
 			version:   0,
 			info: &datapb.ChannelWatchInfo{
-				State:     datapb.ChannelWatchState_ToWatch,
-				TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+				State: datapb.ChannelWatchState_ToWatch,
 			},
 		})
 		em.handleEvent(event{
@@ -228,62 +137,72 @@ func TestChannelEventManager(t *testing.T) {
 			vChanName: "",
 			version:   1,
 			info: &datapb.ChannelWatchInfo{
-				State:     datapb.ChannelWatchState_ToWatch,
-				TimeoutTs: time.Now().Add(time.Minute).UnixNano(),
+				State: datapb.ChannelWatchState_ToWatch,
 			},
 		})
 		<-ch
 		assert.True(t, ran)
 	})
+}
 
-	t.Run("canceled by EndStates", func(t *testing.T) {
-		endStates := []datapb.ChannelWatchState{
-			datapb.ChannelWatchState_Complete,
-			datapb.ChannelWatchState_WatchSuccess,
-			datapb.ChannelWatchState_WatchFailure,
-			datapb.ChannelWatchState_ReleaseSuccess,
-			datapb.ChannelWatchState_ReleaseFailure,
-		}
+func parseWatchInfo(key string, data []byte) (*datapb.ChannelWatchInfo, error) {
+	watchInfo := datapb.ChannelWatchInfo{}
+	if err := proto.Unmarshal(data, &watchInfo); err != nil {
+		return nil, fmt.Errorf("invalid event data: fail to parse ChannelWatchInfo, key: %s, err: %v", key, err)
 
-		for _, es := range endStates {
-			em := newChannelEventManager(
-				func(info *datapb.ChannelWatchInfo, version int64) error {
-					return errors.New("mocked error")
-				},
-				func(name string) {},
-				time.Millisecond*100,
-			)
+	}
 
-			ch := make(chan struct{}, 1)
-			ddl := time.Now().Add(time.Minute)
+	if watchInfo.Vchan == nil {
+		return nil, fmt.Errorf("invalid event: ChannelWatchInfo with nil VChannelInfo, key: %s", key)
+	}
+	reviseVChannelInfo(watchInfo.GetVchan())
 
-			go func() {
-				evt := event{
-					eventType: putEventType,
-					vChanName: "",
-					version:   0,
-					info: &datapb.ChannelWatchInfo{
-						TimeoutTs: ddl.UnixNano(),
-					},
-				}
-				em.retryHandlePutEvent(evt)
-				ch <- struct{}{}
-			}()
+	return &watchInfo, nil
+}
 
-			em.eventChan <- event{
-				eventType: putEventType,
-				vChanName: "",
-				version:   0,
-				info: &datapb.ChannelWatchInfo{
-					State:     es,
-					TimeoutTs: ddl.UnixNano(),
-				},
-			}
-			select {
-			case <-ch:
-			case <-time.NewTimer(time.Minute).C:
-				t.FailNow()
+func TestEventTickler(t *testing.T) {
+	channelName := "test-channel"
+	etcdPrefix := "test_path"
+
+	kv, err := newTestEtcdKV()
+	assert.NoError(t, err)
+	kv.RemoveWithPrefix(etcdPrefix)
+	defer kv.RemoveWithPrefix(etcdPrefix)
+
+	tickler := newTickler(0, path.Join(etcdPrefix, channelName), &datapb.ChannelWatchInfo{
+		Vchan: &datapb.VchannelInfo{
+			ChannelName: channelName,
+		},
+	}, kv, 100*time.Millisecond)
+	defer tickler.stop()
+	endCh := make(chan struct{}, 1)
+	go func() {
+		watchCh := kv.WatchWithPrefix(etcdPrefix)
+		for {
+			event, ok := <-watchCh
+			assert.True(t, ok)
+			for _, evt := range event.Events {
+				key := string(evt.Kv.Key)
+				watchInfo, err := parseWatchInfo(key, evt.Kv.Value)
+				assert.NoError(t, err)
+				if watchInfo.GetVchan().GetChannelName() == channelName {
+					assert.Equal(t, int32(1), watchInfo.Progress)
+					endCh <- struct{}{}
+					return
+				}
 			}
 		}
-	})
+
+	}()
+
+	tickler.inc()
+	tickler.watch()
+	assert.Eventually(t, func() bool {
+		select {
+		case <-endCh:
+			return true
+		default:
+			return false
+		}
+	}, 4*time.Second, 100*time.Millisecond)
 }
diff --git a/internal/datanode/flow_graph_manager.go b/internal/datanode/flow_graph_manager.go
index 8aa24fbef35a..424fe0855ede 100644
--- a/internal/datanode/flow_graph_manager.go
+++ b/internal/datanode/flow_graph_manager.go
@@ -37,7 +37,7 @@ func newFlowgraphManager() *flowgraphManager {
 	return &flowgraphManager{}
 }
 
-func (fm *flowgraphManager) addAndStart(dn *DataNode, vchan *datapb.VchannelInfo, schema *schemapb.CollectionSchema) error {
+func (fm *flowgraphManager) addAndStart(dn *DataNode, vchan *datapb.VchannelInfo, schema *schemapb.CollectionSchema, tickler *tickler) error {
 	if _, ok := fm.flowgraphs.Load(vchan.GetChannelName()); ok {
 		log.Warn("try to add an existed DataSyncService", zap.String("vChannelName", vchan.GetChannelName()))
 		return nil
@@ -48,7 +48,7 @@ func (fm *flowgraphManager) addAndStart(dn *DataNode, vchan *datapb.VchannelInfo
 	var alloc allocatorInterface = newAllocator(dn.rootCoord)
 
 	dataSyncService, err := newDataSyncService(dn.ctx, make(chan flushMsg, 100), make(chan resendTTMsg, 100), channel,
-		alloc, dn.dispClient, dn.factory, vchan, dn.clearSignal, dn.dataCoord, dn.segmentCache, dn.chunkManager, dn.compactionExecutor, dn.GetSession().ServerID)
+		alloc, dn.dispClient, dn.factory, vchan, dn.clearSignal, dn.dataCoord, dn.segmentCache, dn.chunkManager, dn.compactionExecutor, tickler, dn.GetSession().ServerID)
 	if err != nil {
 		log.Warn("new data sync service fail", zap.String("vChannelName", vchan.GetChannelName()), zap.Error(err))
 		return err
diff --git a/internal/datanode/flow_graph_manager_test.go b/internal/datanode/flow_graph_manager_test.go
index 28d6e74f9bce..6ad77b6a7e96 100644
--- a/internal/datanode/flow_graph_manager_test.go
+++ b/internal/datanode/flow_graph_manager_test.go
@@ -64,7 +64,7 @@ func TestFlowGraphManager(t *testing.T) {
 		}
 		require.False(t, fm.exist(vchanName))
 
-		err := fm.addAndStart(node, vchan, nil)
+		err := fm.addAndStart(node, vchan, nil, genTestTickler())
 		assert.NoError(t, err)
 		assert.True(t, fm.exist(vchanName))
 
@@ -79,7 +79,7 @@ func TestFlowGraphManager(t *testing.T) {
 		}
 		require.False(t, fm.exist(vchanName))
 
-		err := fm.addAndStart(node, vchan, nil)
+		err := fm.addAndStart(node, vchan, nil, genTestTickler())
 		assert.NoError(t, err)
 		assert.True(t, fm.exist(vchanName))
 
@@ -97,7 +97,7 @@ func TestFlowGraphManager(t *testing.T) {
 		}
 		require.False(t, fm.exist(vchanName))
 
-		err := fm.addAndStart(node, vchan, nil)
+		err := fm.addAndStart(node, vchan, nil, genTestTickler())
 		assert.NoError(t, err)
 		assert.True(t, fm.exist(vchanName))
 		fg, ok := fm.getFlowgraphService(vchanName)
@@ -145,7 +145,7 @@ func TestFlowGraphManager(t *testing.T) {
 		}
 		require.False(t, fm.exist(vchanName))
 
-		err := fm.addAndStart(node, vchan, nil)
+		err := fm.addAndStart(node, vchan, nil, genTestTickler())
 		assert.NoError(t, err)
 		assert.True(t, fm.exist(vchanName))
 
diff --git a/internal/datanode/mock_test.go b/internal/datanode/mock_test.go
index 5c1624478d4e..034220116a32 100644
--- a/internal/datanode/mock_test.go
+++ b/internal/datanode/mock_test.go
@@ -33,6 +33,7 @@ import (
 	"github.com/milvus-io/milvus-proto/go-api/milvuspb"
 	"github.com/milvus-io/milvus-proto/go-api/schemapb"
 	"github.com/milvus-io/milvus/internal/common"
+	"github.com/milvus-io/milvus/internal/kv"
 	etcdkv "github.com/milvus-io/milvus/internal/kv/etcd"
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/mq/msgdispatcher"
@@ -136,6 +137,22 @@ func makeNewChannelNames(names []string, suffix string) []string {
 	return ret
 }
 
+func newTestEtcdKV() (kv.MetaKv, error) {
+	etcdCli, err := etcd.GetEtcdClient(
+		Params.EtcdCfg.UseEmbedEtcd.GetAsBool(),
+		Params.EtcdCfg.EtcdUseSSL.GetAsBool(),
+		Params.EtcdCfg.Endpoints.GetAsStrings(),
+		Params.EtcdCfg.EtcdTLSCert.GetValue(),
+		Params.EtcdCfg.EtcdTLSKey.GetValue(),
+		Params.EtcdCfg.EtcdTLSCACert.GetValue(),
+		Params.EtcdCfg.EtcdTLSMinVersion.GetValue())
+	if err != nil {
+		return nil, err
+	}
+
+	return etcdkv.NewEtcdKV(etcdCli, Params.EtcdCfg.MetaRootPath.GetValue()), nil
+}
+
 func clearEtcd(rootPath string) error {
 	client, err := etcd.GetEtcdClient(
 		Params.EtcdCfg.UseEmbedEtcd.GetAsBool(),
@@ -1293,3 +1310,7 @@ func genTimestamp() typeutil.Timestamp {
 	gb := time.Date(2009, time.Month(11), 10, 23, 0, 0, 0, time.UTC)
 	return tsoutil.ComposeTSByTime(gb, 0)
 }
+
+func genTestTickler() *tickler {
+	return newTickler(0, "", nil, nil, 0)
+}
diff --git a/internal/datanode/services_test.go b/internal/datanode/services_test.go
index f853bbc236c3..796cd905cdb9 100644
--- a/internal/datanode/services_test.go
+++ b/internal/datanode/services_test.go
@@ -185,7 +185,7 @@ func (s *DataNodeServicesSuite) TestFlushSegments() {
 		FlushedSegmentIds:   []int64{},
 	}
 
-	err := s.node.flowgraphManager.addAndStart(s.node, vchan, nil)
+	err := s.node.flowgraphManager.addAndStart(s.node, vchan, nil, genTestTickler())
 	s.Require().NoError(err)
 
 	fgservice, ok := s.node.flowgraphManager.getFlowgraphService(dmChannelName)
@@ -391,14 +391,14 @@ func (s *DataNodeServicesSuite) TestImport() {
 			ChannelName:         chName1,
 			UnflushedSegmentIds: []int64{},
 			FlushedSegmentIds:   []int64{},
-		}, nil)
+		}, nil, genTestTickler())
 		s.Require().Nil(err)
 		err = s.node.flowgraphManager.addAndStart(s.node, &datapb.VchannelInfo{
 			CollectionID:        100,
 			ChannelName:         chName2,
 			UnflushedSegmentIds: []int64{},
 			FlushedSegmentIds:   []int64{},
-		}, nil)
+		}, nil, genTestTickler())
 		s.Require().Nil(err)
 
 		_, ok := s.node.flowgraphManager.getFlowgraphService(chName1)
@@ -452,14 +452,14 @@ func (s *DataNodeServicesSuite) TestImport() {
 			ChannelName:         chName1,
 			UnflushedSegmentIds: []int64{},
 			FlushedSegmentIds:   []int64{},
-		}, nil)
+		}, nil, genTestTickler())
 		s.Require().Nil(err)
 		err = s.node.flowgraphManager.addAndStart(s.node, &datapb.VchannelInfo{
 			CollectionID:        999, // wrong collection ID.
 			ChannelName:         chName2,
 			UnflushedSegmentIds: []int64{},
 			FlushedSegmentIds:   []int64{},
-		}, nil)
+		}, nil, genTestTickler())
 		s.Require().Nil(err)
 
 		_, ok := s.node.flowgraphManager.getFlowgraphService(chName1)
@@ -564,14 +564,14 @@ func (s *DataNodeServicesSuite) TestAddImportSegment() {
 			ChannelName:         chName1,
 			UnflushedSegmentIds: []int64{},
 			FlushedSegmentIds:   []int64{},
-		}, nil)
+		}, nil, genTestTickler())
 		s.Require().NoError(err)
 		err = s.node.flowgraphManager.addAndStart(s.node, &datapb.VchannelInfo{
 			CollectionID:        100,
 			ChannelName:         chName2,
 			UnflushedSegmentIds: []int64{},
 			FlushedSegmentIds:   []int64{},
-		}, nil)
+		}, nil, genTestTickler())
 		s.Require().NoError(err)
 
 		_, ok := s.node.flowgraphManager.getFlowgraphService(chName1)
@@ -612,7 +612,7 @@ func (s *DataNodeServicesSuite) TestSyncSegments() {
 		ChannelName:         chanName,
 		UnflushedSegmentIds: []int64{},
 		FlushedSegmentIds:   []int64{100, 200, 300},
-	}, nil)
+	}, nil, genTestTickler())
 	s.Require().NoError(err)
 	fg, ok := s.node.flowgraphManager.getFlowgraphService(chanName)
 	s.Assert().True(ok)
@@ -696,7 +696,7 @@ func (s *DataNodeServicesSuite) TestResendSegmentStats() {
 		FlushedSegmentIds:   []int64{},
 	}
 
-	err := s.node.flowgraphManager.addAndStart(s.node, vChan, nil)
+	err := s.node.flowgraphManager.addAndStart(s.node, vChan, nil, genTestTickler())
 	s.Require().Nil(err)
 
 	fgService, ok := s.node.flowgraphManager.getFlowgraphService(dmChannelName)
diff --git a/internal/proto/data_coord.proto b/internal/proto/data_coord.proto
index a60cf9524af9..f98202a213bc 100644
--- a/internal/proto/data_coord.proto
+++ b/internal/proto/data_coord.proto
@@ -413,10 +413,12 @@ message ChannelWatchInfo {
     int64 startTs = 2;
     ChannelWatchState state = 3;
     // the timeout ts, datanode shall do nothing after it
-    // if the timeout is not set(= 0), original infinite retry logic shall be applied
+    // NOT USED.
     int64 timeoutTs = 4;
     // the schema of the collection to watch, to avoid get schema rpc issues.
     schema.CollectionSchema schema = 5;
+    // watch progress
+    int32 progress = 6;
 }
 
 enum CompactionType {
diff --git a/internal/proto/datapb/data_coord.pb.go b/internal/proto/datapb/data_coord.pb.go
index da7406be1061..68707bc18afa 100644
--- a/internal/proto/datapb/data_coord.pb.go
+++ b/internal/proto/datapb/data_coord.pb.go
@@ -2757,13 +2757,15 @@ type ChannelWatchInfo struct {
 	StartTs int64             `protobuf:"varint,2,opt,name=startTs,proto3" json:"startTs,omitempty"`
 	State   ChannelWatchState `protobuf:"varint,3,opt,name=state,proto3,enum=milvus.proto.data.ChannelWatchState" json:"state,omitempty"`
 	// the timeout ts, datanode shall do nothing after it
-	// if the timeout is not set(= 0), original infinite retry logic shall be applied
+	// NOT USED.
 	TimeoutTs int64 `protobuf:"varint,4,opt,name=timeoutTs,proto3" json:"timeoutTs,omitempty"`
 	// the schema of the collection to watch, to avoid get schema rpc issues.
-	Schema               *schemapb.CollectionSchema `protobuf:"bytes,5,opt,name=schema,proto3" json:"schema,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}                   `json:"-"`
-	XXX_unrecognized     []byte                     `json:"-"`
-	XXX_sizecache        int32                      `json:"-"`
+	Schema *schemapb.CollectionSchema `protobuf:"bytes,5,opt,name=schema,proto3" json:"schema,omitempty"`
+	// watch progress
+	Progress             int32    `protobuf:"varint,6,opt,name=progress,proto3" json:"progress,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
 func (m *ChannelWatchInfo) Reset()         { *m = ChannelWatchInfo{} }
@@ -2826,6 +2828,13 @@ func (m *ChannelWatchInfo) GetSchema() *schemapb.CollectionSchema {
 	return nil
 }
 
+func (m *ChannelWatchInfo) GetProgress() int32 {
+	if m != nil {
+		return m.Progress
+	}
+	return 0
+}
+
 type CompactionStateRequest struct {
 	Base                 *commonpb.MsgBase `protobuf:"bytes,1,opt,name=base,proto3" json:"base,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
@@ -4969,299 +4978,300 @@ func init() {
 func init() { proto.RegisterFile("data_coord.proto", fileDescriptor_82cd95f524594f49) }
 
 var fileDescriptor_82cd95f524594f49 = []byte{
-	// 4667 bytes of a gzipped FileDescriptorProto
+	// 4678 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe4, 0x7c, 0x4b, 0x8c, 0x1c, 0x49,
 	0x5a, 0xb0, 0xb3, 0x5e, 0x5d, 0xf5, 0xd5, 0xa3, 0xab, 0xc3, 0x9e, 0x76, 0xb9, 0x66, 0xfc, 0x4a,
 	0xdb, 0xe3, 0x1e, 0x8f, 0xc7, 0xf6, 0x78, 0xfe, 0xd1, 0xfa, 0x5f, 0xef, 0xcc, 0xe2, 0xee, 0x76,
 	0x7b, 0x0a, 0xdc, 0xbd, 0xbd, 0xd9, 0xed, 0x31, 0x9a, 0x45, 0x2a, 0x65, 0x57, 0x46, 0x57, 0xe7,
 	0x76, 0x55, 0x66, 0x39, 0x33, 0xab, 0xdb, 0xbd, 0x48, 0xec, 0x00, 0x12, 0xd2, 0x20, 0x04, 0x08,
-	0x09, 0x21, 0x6e, 0x88, 0xd3, 0xb2, 0x68, 0x11, 0xd2, 0xc2, 0x85, 0x0b, 0xd7, 0x11, 0x1c, 0x56,
-	0x08, 0x89, 0x23, 0x47, 0xe0, 0x8e, 0xc4, 0x89, 0x03, 0x8a, 0x47, 0x46, 0xbe, 0x22, 0xab, 0xb2,
-	0xab, 0xec, 0xb1, 0x04, 0xb7, 0x8a, 0xc8, 0x2f, 0xbe, 0xf8, 0x22, 0xbe, 0xf7, 0x17, 0x11, 0x05,
-	0x4d, 0x43, 0xf7, 0xf4, 0x6e, 0xcf, 0xb6, 0x1d, 0xe3, 0xce, 0xc8, 0xb1, 0x3d, 0x1b, 0x2d, 0x0d,
-	0xcd, 0xc1, 0xd1, 0xd8, 0x65, 0xad, 0x3b, 0xe4, 0x73, 0xbb, 0xd6, 0xb3, 0x87, 0x43, 0xdb, 0x62,
-	0x5d, 0xed, 0x86, 0x69, 0x79, 0xd8, 0xb1, 0xf4, 0x01, 0x6f, 0xd7, 0xc2, 0x03, 0xda, 0x35, 0xb7,
-	0x77, 0x80, 0x87, 0x3a, 0x6f, 0x2d, 0x99, 0x96, 0x81, 0x5f, 0x86, 0xf1, 0xab, 0x0b, 0x50, 0x7c,
-	0x3c, 0x1c, 0x79, 0x27, 0xea, 0xdf, 0x28, 0x50, 0xdb, 0x18, 0x8c, 0xdd, 0x03, 0x0d, 0xbf, 0x18,
-	0x63, 0xd7, 0x43, 0xf7, 0xa0, 0xb0, 0xa7, 0xbb, 0xb8, 0xa5, 0x5c, 0x51, 0x56, 0xaa, 0xf7, 0xdf,
-	0xb9, 0x13, 0x21, 0x84, 0x93, 0xb0, 0xe9, 0xf6, 0x57, 0x75, 0x17, 0x6b, 0x14, 0x12, 0x21, 0x28,
-	0x18, 0x7b, 0x9d, 0xf5, 0x56, 0xee, 0x8a, 0xb2, 0x92, 0xd7, 0xe8, 0x6f, 0x74, 0x09, 0xc0, 0xc5,
-	0xfd, 0x21, 0xb6, 0xbc, 0xce, 0xba, 0xdb, 0xca, 0x5f, 0xc9, 0xaf, 0xe4, 0xb5, 0x50, 0x0f, 0x52,
-	0xa1, 0xd6, 0xb3, 0x07, 0x03, 0xdc, 0xf3, 0x4c, 0xdb, 0xea, 0xac, 0xb7, 0x0a, 0x74, 0x6c, 0xa4,
-	0x0f, 0xb5, 0xa1, 0x6c, 0xba, 0x9d, 0xe1, 0xc8, 0x76, 0xbc, 0x56, 0xf1, 0x8a, 0xb2, 0x52, 0xd6,
-	0x44, 0x5b, 0xfd, 0x37, 0x05, 0xea, 0x9c, 0x6c, 0x77, 0x64, 0x5b, 0x2e, 0x46, 0x1f, 0x41, 0xc9,
-	0xf5, 0x74, 0x6f, 0xec, 0x72, 0xca, 0xdf, 0x96, 0x52, 0xbe, 0x43, 0x41, 0x34, 0x0e, 0x2a, 0x25,
-	0x3d, 0x4e, 0x5a, 0x5e, 0x42, 0x5a, 0x74, 0x79, 0x85, 0xc4, 0xf2, 0x56, 0x60, 0x71, 0x9f, 0x50,
-	0xb7, 0x13, 0x00, 0x15, 0x29, 0x50, 0xbc, 0x9b, 0x60, 0xf2, 0xcc, 0x21, 0xfe, 0xde, 0xfe, 0x0e,
-	0xd6, 0x07, 0xad, 0x12, 0x9d, 0x2b, 0xd4, 0xa3, 0xfe, 0x93, 0x02, 0x4d, 0x01, 0xee, 0xf3, 0xe8,
-	0x1c, 0x14, 0x7b, 0xf6, 0xd8, 0xf2, 0xe8, 0x52, 0xeb, 0x1a, 0x6b, 0xa0, 0xab, 0x50, 0xeb, 0x1d,
-	0xe8, 0x96, 0x85, 0x07, 0x5d, 0x4b, 0x1f, 0x62, 0xba, 0xa8, 0x8a, 0x56, 0xe5, 0x7d, 0x5b, 0xfa,
-	0x10, 0x67, 0x5a, 0xdb, 0x15, 0xa8, 0x8e, 0x74, 0xc7, 0x33, 0x23, 0x9c, 0x09, 0x77, 0x4d, 0x62,
-	0x0c, 0x99, 0xc1, 0xa4, 0xbf, 0x76, 0x75, 0xf7, 0xb0, 0xb3, 0xce, 0x57, 0x14, 0xe9, 0x53, 0xff,
-	0x4c, 0x81, 0xe5, 0x47, 0xae, 0x6b, 0xf6, 0xad, 0xc4, 0xca, 0x96, 0xa1, 0x64, 0xd9, 0x06, 0xee,
-	0xac, 0xd3, 0xa5, 0xe5, 0x35, 0xde, 0x42, 0x6f, 0x43, 0x65, 0x84, 0xb1, 0xd3, 0x75, 0xec, 0x81,
-	0xbf, 0xb0, 0x32, 0xe9, 0xd0, 0xec, 0x01, 0x46, 0xdf, 0x87, 0x25, 0x37, 0x86, 0x88, 0xc9, 0x5c,
-	0xf5, 0xfe, 0xb5, 0x3b, 0x09, 0x45, 0xba, 0x13, 0x9f, 0x54, 0x4b, 0x8e, 0x56, 0xbf, 0xcc, 0xc1,
-	0x59, 0x01, 0xc7, 0x68, 0x25, 0xbf, 0xc9, 0xce, 0xbb, 0xb8, 0x2f, 0xc8, 0x63, 0x8d, 0x2c, 0x3b,
-	0x2f, 0x58, 0x96, 0x0f, 0xb3, 0x2c, 0x8b, 0x1a, 0xc4, 0xf8, 0x51, 0x4c, 0xf2, 0xe3, 0x32, 0x54,
-	0xf1, 0xcb, 0x91, 0xe9, 0xe0, 0x2e, 0x11, 0x1c, 0xba, 0xe5, 0x05, 0x0d, 0x58, 0xd7, 0xae, 0x39,
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+	0x44, 0x3d, 0x38, 0x2b, 0xa9, 0x4b, 0x48, 0x5d, 0x4e, 0x7a, 0xfd, 0x62, 0xda, 0x24, 0xfb, 0xd0,
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+	0x58, 0x2d, 0xad, 0x28, 0x4c, 0x9b, 0x67, 0x0f, 0xaa, 0x94, 0x95, 0xec, 0xef, 0x29, 0x90, 0xdc,
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+	0xc7, 0x32, 0xf0, 0xcb, 0xb8, 0xbf, 0xa2, 0x2f, 0x73, 0xef, 0x84, 0x00, 0x32, 0xef, 0x50, 0x9d,
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+	0x21, 0x4f, 0x7f, 0x2e, 0x1c, 0xe6, 0x89, 0xe9, 0xee, 0xa6, 0x20, 0x49, 0x40, 0xfa, 0xb3, 0xde,
+	0xcb, 0x3e, 0x20, 0xec, 0x19, 0x7c, 0xba, 0x3a, 0xf4, 0x3c, 0xe7, 0xe6, 0x24, 0xd2, 0xc3, 0xb1,
+	0xdb, 0xca, 0x74, 0x40, 0x31, 0xcb, 0x36, 0x54, 0x88, 0x74, 0x32, 0xf6, 0x5c, 0x97, 0x0d, 0x14,
+	0x9f, 0xb3, 0x33, 0x67, 0x1d, 0xbb, 0x3d, 0xc7, 0xdc, 0xe3, 0x4c, 0x97, 0x92, 0x13, 0x01, 0x99,
+	0xc8, 0x9c, 0x18, 0xa4, 0xa0, 0xfc, 0x37, 0x68, 0xb4, 0x4e, 0x7b, 0x57, 0xc7, 0xe6, 0xc0, 0xd8,
+	0xe6, 0x17, 0x5e, 0xd1, 0xbd, 0x49, 0xcb, 0x8f, 0x80, 0xa6, 0x46, 0x62, 0x13, 0x46, 0x88, 0xf9,
+	0x7f, 0x15, 0x2a, 0xa2, 0x7c, 0x84, 0x64, 0x37, 0xb6, 0xe2, 0x85, 0xab, 0xf6, 0xf5, 0xc9, 0x40,
+	0x3e, 0xe6, 0xfb, 0x5f, 0x57, 0xa0, 0xec, 0xbf, 0x00, 0xfa, 0x86, 0xeb, 0x1e, 0x6f, 0xa0, 0x10,
+	0xf1, 0x03, 0x58, 0x8c, 0xbd, 0xc6, 0x97, 0xda, 0x38, 0xf9, 0x8b, 0xfd, 0x69, 0xc2, 0xf8, 0x9c,
+	0xff, 0x81, 0x9c, 0xc8, 0x49, 0x6e, 0xa6, 0x15, 0x33, 0xe2, 0xe9, 0xc8, 0x14, 0xc4, 0xff, 0xbb,
+	0x93, 0x80, 0x2d, 0x80, 0x50, 0xf8, 0x3f, 0xf9, 0x2e, 0x2c, 0x89, 0x68, 0xa7, 0xed, 0xd6, 0x50,
+	0x1a, 0xe1, 0xbf, 0x97, 0xe5, 0x5e, 0x61, 0x7a, 0x8c, 0x96, 0x1e, 0xd7, 0x3f, 0x83, 0x5a, 0xf8,
+	0x96, 0x3a, 0x92, 0xfe, 0x5d, 0x59, 0xf2, 0x1a, 0xfb, 0xb4, 0x55, 0x6c, 0x9e, 0x32, 0xf4, 0x9b,
+	0x82, 0xce, 0x05, 0x94, 0x3c, 0xdf, 0x94, 0x86, 0xca, 0xa9, 0xa7, 0xaa, 0xd2, 0x50, 0x39, 0xfd,
+	0xd0, 0x94, 0xd5, 0xb4, 0xe2, 0x87, 0x76, 0xd2, 0x9a, 0x56, 0xca, 0x31, 0xa8, 0xb4, 0xa6, 0x95,
+	0x76, 0x0a, 0xa8, 0x9e, 0x59, 0xfd, 0xe8, 0x8b, 0x0f, 0xfb, 0xa6, 0x77, 0x30, 0xde, 0x23, 0xab,
+	0xbf, 0xcb, 0x86, 0x7e, 0x60, 0xda, 0xfc, 0xd7, 0x5d, 0x5f, 0xdc, 0xef, 0x52, 0x6c, 0x77, 0x09,
+	0xb6, 0xd1, 0xde, 0x5e, 0x89, 0xb6, 0x3e, 0xfa, 0x9f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x6d, 0xf9,
+	0xa2, 0x18, 0x31, 0x53, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/internal/util/paramtable/component_param.go b/internal/util/paramtable/component_param.go
index afffe7fd258b..ad7bc1a906c3 100644
--- a/internal/util/paramtable/component_param.go
+++ b/internal/util/paramtable/component_param.go
@@ -176,6 +176,7 @@ type commonConfig struct {
 	DataCoordSegmentInfo  ParamItem `refreshable:"true"`
 	DataCoordSubName      ParamItem `refreshable:"false"`
 	DataCoordWatchSubPath ParamItem `refreshable:"false"`
+	DataCoordTicklePath   ParamItem `refreshable:"false"`
 	DataNodeSubName       ParamItem `refreshable:"false"`
 
 	DefaultPartitionName ParamItem `refreshable:"false"`
@@ -366,6 +367,14 @@ func (p *commonConfig) init(base *BaseTable) {
 	}
 	p.DataCoordWatchSubPath.Init(base.mgr)
 
+	p.DataCoordTicklePath = ParamItem{
+		Key:          "msgChannel.subNamePrefix.dataCoordWatchSubPath",
+		Version:      "2.2.3",
+		DefaultValue: "tickle",
+		PanicIfEmpty: true,
+	}
+	p.DataCoordTicklePath.Init(base.mgr)
+
 	p.DataNodeSubName = ParamItem{
 		Key:          "msgChannel.subNamePrefix.dataNodeSubNamePrefix",
 		Version:      "2.1.0",
@@ -1367,7 +1376,7 @@ func (p *queryNodeConfig) init(base *BaseTable) {
 type dataCoordConfig struct {
 
 	// --- CHANNEL ---
-	MaxWatchDuration ParamItem `refreshable:"false"`
+	WatchTimeoutInterval ParamItem `refreshable:"false"`
 
 	// --- SEGMENTS ---
 	SegmentMaxSize                 ParamItem `refreshable:"false"`
@@ -1414,12 +1423,12 @@ type dataCoordConfig struct {
 
 func (p *dataCoordConfig) init(base *BaseTable) {
 
-	p.MaxWatchDuration = ParamItem{
-		Key:          "dataCoord.channel.maxWatchDuration",
-		Version:      "2.2.1",
-		DefaultValue: "600",
+	p.WatchTimeoutInterval = ParamItem{
+		Key:          "dataCoord.channel.watchTimeoutInterval",
+		Version:      "2.2.3",
+		DefaultValue: "30",
 	}
-	p.MaxWatchDuration.Init(base.mgr)
+	p.WatchTimeoutInterval.Init(base.mgr)
 
 	p.SegmentMaxSize = ParamItem{
 		Key:          "dataCoord.segment.maxSize",
@@ -1664,6 +1673,9 @@ type dataNodeConfig struct {
 	BinLogMaxSize          ParamItem `refreshable:"true"`
 	SyncPeriod             ParamItem `refreshable:"true"`
 
+	// watchEvent
+	WatchEventTicklerInterval ParamItem `refreshable:"false"`
+
 	// io concurrency to fetch stats logs
 	IOConcurrency ParamItem `refreshable:"false"`
 }
@@ -1713,6 +1725,13 @@ func (p *dataNodeConfig) init(base *BaseTable) {
 	}
 	p.SyncPeriod.Init(base.mgr)
 
+	p.WatchEventTicklerInterval = ParamItem{
+		Key:          "datanode.segment.watchEventTicklerInterval",
+		Version:      "2.2.3",
+		DefaultValue: "15",
+	}
+	p.WatchEventTicklerInterval.Init(base.mgr)
+
 	p.IOConcurrency = ParamItem{
 		Key:          "dataNode.dataSync.ioConcurrency",
 		Version:      "2.0.0",