Add segment expire logic for proxy

Signed-off-by: zhenshan.cao <zhenshan.cao@zilliz.com>

internal/allocator/allocator.go

@@ -58,6 +58,7 @@ type segRequest struct {
 	partition string
 	segInfo   map[UniqueID]uint32
 	channelID int32
+	timestamp Timestamp
 }
 
 type syncRequest struct {
@@ -122,15 +123,17 @@ type Allocator struct {
 	countPerRPC   uint32
 
 	toDoReqs  []request
-
+	canDoReqs []request
 	syncReqs  []request
 
 	tChan         tickerChan
 	forceSyncChan chan request
 
-	syncFunc    func()
+	syncFunc    func() bool
 	processFunc func(req request) error
-	checkFunc   func(timeout bool) bool
+
+	checkSyncFunc func(timeout bool) bool
+	pickCanDoFunc func()
 }
 
 func (ta *Allocator) Start() error {
@@ -145,7 +148,6 @@ func (ta *Allocator) Start() error {
 }
 
 func (ta *Allocator) connectMaster() error {
-	log.Printf("Connected to master, master_addr=%s", ta.masterAddress)
 	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
 	defer cancel()
 	conn, err := grpc.DialContext(ctx, ta.masterAddress, grpc.WithInsecure(), grpc.WithBlock())
@@ -182,7 +184,13 @@ func (ta *Allocator) mainLoop() {
 			ta.finishSyncRequest()
 
 		case <-ta.tChan.Chan():
-			ta.sync(true)
+			ta.pickCanDo()
+			ta.finishRequest()
+			if ta.sync(true) {
+				ta.pickCanDo()
+				ta.finishRequest()
+			}
+			ta.failRemainRequest()
 
 		case first := <-ta.reqs:
 			ta.toDoReqs = append(ta.toDoReqs, first)
@@ -190,9 +198,13 @@ func (ta *Allocator) mainLoop() {
 			for i := 0; i < pending; i++ {
 				ta.toDoReqs = append(ta.toDoReqs, <-ta.reqs)
 			}
-			ta.sync(false)
+			ta.pickCanDo()
-
 			ta.finishRequest()
+			if ta.sync(false) {
+				ta.pickCanDo()
+				ta.finishRequest()
+			}
+			ta.failRemainRequest()
 
 		case <-loopCtx.Done():
 			return
@@ -201,19 +213,32 @@ func (ta *Allocator) mainLoop() {
 	}
 }
 
-func (ta *Allocator) sync(timeout bool) {
+func (ta *Allocator) pickCanDo() {
-	if ta.syncFunc == nil {
+	if ta.pickCanDoFunc == nil {
 		return
 	}
-	if ta.checkFunc == nil || !ta.checkFunc(timeout) {
+	ta.pickCanDoFunc()
-		return
+}
+
+func (ta *Allocator) sync(timeout bool) bool {
+	if ta.syncFunc == nil || ta.checkSyncFunc == nil {
+		ta.canDoReqs = ta.toDoReqs
+		ta.toDoReqs = ta.toDoReqs[0:0]
+		return true
+	}
+	if !timeout && len(ta.toDoReqs) == 0 {
+		return false
+	}
+	if !ta.checkSyncFunc(timeout) {
+		return false
 	}
 
-	ta.syncFunc()
+	ret := ta.syncFunc()
 
 	if !timeout {
 		ta.tChan.Reset()
 	}
+	return ret
 }
 
 func (ta *Allocator) finishSyncRequest() {
@@ -225,14 +250,23 @@ func (ta *Allocator) finishSyncRequest() {
 	ta.syncReqs = ta.syncReqs[0:0]
 }
 
-func (ta *Allocator) finishRequest() {
+func (ta *Allocator) failRemainRequest() {
 	for _, req := range ta.toDoReqs {
+		if req != nil {
+			req.Notify(errors.New("failed: unexpected error"))
+		}
+	}
+	ta.toDoReqs = []request{}
+}
+
+func (ta *Allocator) finishRequest() {
+	for _, req := range ta.canDoReqs {
 		if req != nil {
 			err := ta.processFunc(req)
 			req.Notify(err)
 		}
 	}
-	ta.toDoReqs = ta.toDoReqs[0:0]
+	ta.canDoReqs = []request{}
 }
 
 func (ta *Allocator) revokeRequest(err error) {

internal/allocator/id.go

@@ -21,6 +21,8 @@ type IDAllocator struct {
 
 	idStart UniqueID
 	idEnd   UniqueID
+
+	PeerID UniqueID
 }
 
 func NewIDAllocator(ctx context.Context, masterAddr string) (*IDAllocator, error) {
@@ -37,16 +39,17 @@ func NewIDAllocator(ctx context.Context, masterAddr string) (*IDAllocator, error
 	a.tChan = &emptyTicker{}
 	a.Allocator.syncFunc = a.syncID
 	a.Allocator.processFunc = a.processFunc
-	a.Allocator.checkFunc = a.checkFunc
+	a.Allocator.checkSyncFunc = a.checkSyncFunc
+	a.Allocator.pickCanDoFunc = a.pickCanDoFunc
 	a.init()
 	return a, nil
 }
 
-func (ia *IDAllocator) syncID() {
+func (ia *IDAllocator) syncID() bool {
 	fmt.Println("syncID")
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	req := &internalpb.IDRequest{
-		PeerID: 1,
+		PeerID: ia.PeerID,
 		Role:   internalpb.PeerRole_Proxy,
 		Count:  ia.countPerRPC,
 	}
@@ -55,22 +58,32 @@ func (ia *IDAllocator) syncID() {
 	cancel()
 	if err != nil {
 		log.Println("syncID Failed!!!!!")
-		return
+		return false
 	}
 	ia.idStart = resp.GetID()
 	ia.idEnd = ia.idStart + int64(resp.GetCount())
+	return true
 }
 
-func (ia *IDAllocator) checkFunc(timeout bool) bool {
+func (ia *IDAllocator) checkSyncFunc(timeout bool) bool {
-	if timeout {
+	return timeout || len(ia.toDoReqs) > 0
-		return timeout
+}
-	}
+
+func (ia *IDAllocator) pickCanDoFunc() {
+	total := uint32(ia.idEnd - ia.idStart)
 	need := uint32(0)
+	idx := 0
 	for _, req := range ia.toDoReqs {
 		iReq := req.(*idRequest)
 		need += iReq.count
+		if need <= total {
+			ia.canDoReqs = append(ia.canDoReqs, req)
+			idx++
+		} else {
+			break
 		}
-	return ia.idStart+int64(need) >= ia.idEnd
+	}
+	ia.toDoReqs = ia.toDoReqs[idx:]
 }
 
 func (ia *IDAllocator) processFunc(req request) error {

internal/allocator/segment.go

@@ -5,10 +5,9 @@ import (
 	"context"
 	"fmt"
 	"log"
-	"sort"
 	"time"
 
-	"github.com/cznic/mathutil"
+	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
 
 	"github.com/zilliztech/milvus-distributed/internal/errors"
 	"github.com/zilliztech/milvus-distributed/internal/proto/internalpb"
@@ -16,42 +15,101 @@ import (
 
 const (
 	SegCountPerRPC     = 20000
-	ActiveTimeDuration = 100 // Second
+	ActiveTimeDuration = 100 //second
 )
 
+type segInfo struct {
+	segID      UniqueID
+	count      uint32
+	expireTime Timestamp
+}
+
 type assignInfo struct {
 	collName       string
 	partitionTag   string
 	channelID      int32
-	segInfo        map[UniqueID]uint32 // segmentID->count map
+	segID          UniqueID
-	expireTime     time.Time
+	segInfos       *list.List
+	segCapacity    uint32
 	lastInsertTime time.Time
 }
 
-func (info *assignInfo) IsExpired(now time.Time) bool {
+func (info *segInfo) IsExpired(ts Timestamp) bool {
-	return now.Sub(info.expireTime) >= 0
+	return ts > info.expireTime || info.count <= 0
+}
+
+func (info *segInfo) Capacity(ts Timestamp) uint32 {
+	if info.IsExpired(ts) {
+		return 0
+	}
+	return info.count
+}
+
+func (info *segInfo) Assign(ts Timestamp, count uint32) uint32 {
+	if info.IsExpired(ts) {
+		return 0
+	}
+	ret := uint32(0)
+	if info.count >= count {
+		info.count -= count
+		ret = count
+	} else {
+		info.count = 0
+		ret = info.count
+	}
+	return ret
+}
+
+func (info *assignInfo) RemoveExpired(ts Timestamp) {
+	for e := info.segInfos.Front(); e != nil; e = e.Next() {
+		segInfo := e.Value.(*segInfo)
+		if segInfo.IsExpired(ts) {
+			info.segInfos.Remove(e)
+		}
+	}
+}
+
+func (info *assignInfo) Capacity(ts Timestamp) uint32 {
+	ret := uint32(0)
+	for e := info.segInfos.Front(); e != nil; e = e.Next() {
+		segInfo := e.Value.(*segInfo)
+		ret += segInfo.Capacity(ts)
+	}
+	return ret
+}
+
+func (info *assignInfo) Assign(ts Timestamp, count uint32) (map[UniqueID]uint32, error) {
+	capacity := info.Capacity(ts)
+	if capacity < count {
+		errMsg := fmt.Sprintf("AssignSegment Failed: capacity:%d is less than count:%d", capacity, count)
+		return nil, errors.New(errMsg)
+	}
+
+	result := make(map[UniqueID]uint32)
+	for e := info.segInfos.Front(); e != nil && count != 0; e = e.Next() {
+		segInfo := e.Value.(*segInfo)
+		cur := segInfo.Assign(ts, count)
+		count -= cur
+		if cur > 0 {
+			result[segInfo.segID] += cur
+		}
+	}
+	return result, nil
 }
 
 func (info *assignInfo) IsActive(now time.Time) bool {
 	return now.Sub(info.lastInsertTime) <= ActiveTimeDuration*time.Second
 }
 
-func (info *assignInfo) IsEnough(count uint32) bool {
-	total := uint32(0)
-	for _, count := range info.segInfo {
-		total += count
-	}
-	return total >= count
-}
-
 type SegIDAssigner struct {
 	Allocator
 	assignInfos map[string]*list.List // collectionName -> *list.List
 	segReqs     []*internalpb.SegIDRequest
-	canDoReqs   []request
+	getTickFunc func() Timestamp
+	PeerID      UniqueID
 }
 
-func NewSegIDAssigner(ctx context.Context, masterAddr string) (*SegIDAssigner, error) {
+func NewSegIDAssigner(ctx context.Context, masterAddr string, getTickFunc func() Timestamp) (*SegIDAssigner, error) {
 	ctx1, cancel := context.WithCancel(ctx)
 	sa := &SegIDAssigner{
 		Allocator: Allocator{reqs: make(chan request, maxConcurrentRequests),
@@ -61,72 +119,80 @@ func NewSegIDAssigner(ctx context.Context, masterAddr string) (*SegIDAssigner, e
 			countPerRPC:   SegCountPerRPC,
 		},
 		assignInfos: make(map[string]*list.List),
+		getTickFunc: getTickFunc,
 	}
 	sa.tChan = &ticker{
 		updateInterval: time.Second,
 	}
 	sa.Allocator.syncFunc = sa.syncSegments
 	sa.Allocator.processFunc = sa.processFunc
-	sa.Allocator.checkFunc = sa.checkFunc
+	sa.Allocator.checkSyncFunc = sa.checkSyncFunc
+	sa.Allocator.pickCanDoFunc = sa.pickCanDoFunc
 	return sa, nil
 }
 
 func (sa *SegIDAssigner) collectExpired() {
-	now := time.Now()
+	ts := sa.getTickFunc()
+	//now := time.Now()
 	for _, info := range sa.assignInfos {
 		for e := info.Front(); e != nil; e = e.Next() {
 			assign := e.Value.(*assignInfo)
-			if !assign.IsActive(now) || !assign.IsExpired(now) {
+			assign.RemoveExpired(ts)
-				continue
+			if assign.Capacity(ts) == 0 {
+				info.Remove(e)
+				//if assign.IsActive(now) {
+				//	sa.segReqs = append(sa.segReqs, &internalpb.SegIDRequest{
+				//		ChannelID:    assign.channelID,
+				//		Count:        0, // intend to set zero
+				//		CollName:     assign.collName,
+				//		PartitionTag: assign.partitionTag,
+				//	})
+				//} else {
+				//	info.Remove(e)
+				//}
 			}
-			sa.segReqs = append(sa.segReqs, &internalpb.SegIDRequest{
-				ChannelID:    assign.channelID,
-				Count:        sa.countPerRPC,
-				CollName:     assign.collName,
-				PartitionTag: assign.partitionTag,
-			})
 		}
 	}
 }
 
-func (sa *SegIDAssigner) checkToDoReqs() {
+func (sa *SegIDAssigner) pickCanDoFunc() {
 	if sa.toDoReqs == nil {
 		return
 	}
-	now := time.Now()
+	records := make(map[string]map[string]map[int32]uint32)
+	newTodoReqs := sa.toDoReqs[0:0]
 	for _, req := range sa.toDoReqs {
 		segRequest := req.(*segRequest)
+		colName := segRequest.colName
+		partition := segRequest.partition
+		channelID := segRequest.channelID
+
+		if _, ok := records[colName]; !ok {
+			records[colName] = make(map[string]map[int32]uint32)
+		}
+		if _, ok := records[colName][partition]; !ok {
+			records[colName][partition] = make(map[int32]uint32)
+		}
+
+		if _, ok := records[colName][partition][channelID]; !ok {
+			records[colName][partition][channelID] = 0
+		}
+
+		records[colName][partition][channelID] += segRequest.count
 		assign := sa.getAssign(segRequest.colName, segRequest.partition, segRequest.channelID)
-		if assign == nil || assign.IsExpired(now) || !assign.IsEnough(segRequest.count) {
+		if assign == nil || assign.Capacity(segRequest.timestamp) < records[colName][partition][channelID] {
 			sa.segReqs = append(sa.segReqs, &internalpb.SegIDRequest{
 				ChannelID:    segRequest.channelID,
 				Count:        segRequest.count,
 				CollName:     segRequest.colName,
 				PartitionTag: segRequest.partition,
 			})
+			newTodoReqs = append(newTodoReqs, req)
+		} else {
+			sa.canDoReqs = append(sa.canDoReqs, req)
 		}
 	}
-}
+	sa.toDoReqs = newTodoReqs
-
-func (sa *SegIDAssigner) removeSegInfo(colName, partition string, channelID int32) {
-	assignInfos, ok := sa.assignInfos[colName]
-	if !ok {
-		return
-	}
-
-	cnt := assignInfos.Len()
-	if cnt == 0 {
-		return
-	}
-
-	for e := assignInfos.Front(); e != nil; e = e.Next() {
-		assign := e.Value.(*assignInfo)
-		if assign.partitionTag != partition || assign.channelID != channelID {
-			continue
-		}
-		assignInfos.Remove(e)
-	}
-
 }
 
 func (sa *SegIDAssigner) getAssign(colName, partition string, channelID int32) *assignInfo {
@@ -145,72 +211,109 @@ func (sa *SegIDAssigner) getAssign(colName, partition string, channelID int32) *
 	return nil
 }
 
-func (sa *SegIDAssigner) checkFunc(timeout bool) bool {
+func (sa *SegIDAssigner) checkSyncFunc(timeout bool) bool {
-	if timeout {
 	sa.collectExpired()
-	} else {
+	return timeout || len(sa.segReqs) != 0
-		sa.checkToDoReqs()
-	}
-
-	return len(sa.segReqs) != 0
 }
 
-func (sa *SegIDAssigner) syncSegments() {
+func (sa *SegIDAssigner) checkSegReqEqual(req1, req2 *internalpb.SegIDRequest) bool {
+	if req1 == nil || req2 == nil {
+		return false
+	}
+
+	if req1 == req2 {
+		return true
+	}
+	return req1.CollName == req2.CollName && req1.PartitionTag == req2.PartitionTag && req1.ChannelID == req2.ChannelID
+}
+
+func (sa *SegIDAssigner) reduceSegReqs() {
+
 	if len(sa.segReqs) == 0 {
 		return
 	}
 
+	var newSegReqs []*internalpb.SegIDRequest
+	for _, req1 := range sa.segReqs {
+		var req2 *internalpb.SegIDRequest
+		for _, req3 := range newSegReqs {
+			if sa.checkSegReqEqual(req1, req3) {
+				req2 = req3
+				break
+			}
+		}
+		if req2 == nil { // not found
+			newSegReqs = append(newSegReqs, req1)
+		} else {
+			req2.Count += req1.Count
+		}
+	}
+
+	for _, req := range newSegReqs {
+		if req.Count == 0 {
+			req.Count = sa.countPerRPC
+		}
+	}
+	sa.segReqs = newSegReqs
+}
+
+func (sa *SegIDAssigner) syncSegments() bool {
+	if len(sa.segReqs) == 0 {
+		return true
+	}
+	sa.reduceSegReqs()
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	req := &internalpb.AssignSegIDRequest{
-		PeerID:        1,
+		PeerID:        sa.PeerID,
 		Role:          internalpb.PeerRole_Proxy,
 		PerChannelReq: sa.segReqs,
 	}
 
-	sa.segReqs = sa.segReqs[0:0]
+	sa.segReqs = []*internalpb.SegIDRequest{}
-	fmt.Println("OOOOO", req.PerChannelReq)
 	resp, err := sa.masterClient.AssignSegmentID(ctx, req)
 
-	//if resp.Status.GetErrorCode() != commonpb.ErrorCode_SUCCESS {
+	if err != nil {
-	//	log.Println("GRPC AssignSegmentID Failed", resp, err)
+		log.Println("GRPC AssignSegmentID Failed", resp, err)
-	//	return
+		return false
-	//}
-
-	now := time.Now()
-	expiredTime := now.Add(time.Millisecond * time.Duration(1000))
-	for _, info := range resp.PerChannelAssignment {
-		sa.removeSegInfo(info.CollName, info.PartitionTag, info.ChannelID)
 	}
 
+	now := time.Now()
+	success := false
 	for _, info := range resp.PerChannelAssignment {
+		if info.Status.GetErrorCode() != commonpb.ErrorCode_SUCCESS {
+			log.Println("SyncSegment Error:", info.Status.Reason)
+			continue
+		}
 		assign := sa.getAssign(info.CollName, info.PartitionTag, info.ChannelID)
+		segInfo := &segInfo{
+			segID:      info.SegID,
+			count:      info.Count,
+			expireTime: info.ExpireTime,
+		}
 		if assign == nil {
 			colInfos, ok := sa.assignInfos[info.CollName]
 			if !ok {
 				colInfos = list.New()
 			}
-			segInfo := make(map[UniqueID]uint32)
+			segInfos := list.New()
-			segInfo[info.SegID] = info.Count
+
-			newAssign := &assignInfo{
+			segInfos.PushBack(segInfo)
+			assign = &assignInfo{
 				collName:     info.CollName,
 				partitionTag: info.PartitionTag,
 				channelID:    info.ChannelID,
-				segInfo:      segInfo,
+				segInfos:     segInfos,
 			}
-			colInfos.PushBack(newAssign)
+			colInfos.PushBack(assign)
 			sa.assignInfos[info.CollName] = colInfos
 		} else {
-			assign.segInfo[info.SegID] = info.Count
+			assign.segInfos.PushBack(segInfo)
-			assign.expireTime = expiredTime
+		}
 		assign.lastInsertTime = now
+		success = true
 	}
-	}
+	return success
-
-	if err != nil {
-		log.Println("syncSemgnet Failed!!!!!")
-		return
-	}
 }
 
 func (sa *SegIDAssigner) processFunc(req request) error {
@@ -219,43 +322,19 @@ func (sa *SegIDAssigner) processFunc(req request) error {
 	if assign == nil {
 		return errors.New("Failed to GetSegmentID")
 	}
-
+	result, err := assign.Assign(segRequest.timestamp, segRequest.count)
-	keys := make([]UniqueID, len(assign.segInfo))
+	segRequest.segInfo = result
-	i := 0
+	return err
-	for key := range assign.segInfo {
-		keys[i] = key
-		i++
-	}
-	reqCount := segRequest.count
-
-	resultSegInfo := make(map[UniqueID]uint32)
-	sort.Slice(keys, func(i, j int) bool { return keys[i] < keys[j] })
-	for _, key := range keys {
-		if reqCount <= 0 {
-			break
-		}
-		cur := assign.segInfo[key]
-		minCnt := mathutil.MinUint32(cur, reqCount)
-		resultSegInfo[key] = minCnt
-		cur -= minCnt
-		reqCount -= minCnt
-		if cur <= 0 {
-			delete(assign.segInfo, key)
-		} else {
-			assign.segInfo[key] = cur
-		}
-	}
-	segRequest.segInfo = resultSegInfo
-	return nil
 }
 
-func (sa *SegIDAssigner) GetSegmentID(colName, partition string, channelID int32, count uint32) (map[UniqueID]uint32, error) {
+func (sa *SegIDAssigner) GetSegmentID(colName, partition string, channelID int32, count uint32, ts Timestamp) (map[UniqueID]uint32, error) {
 	req := &segRequest{
 		baseRequest: baseRequest{done: make(chan error), valid: false},
 		colName:     colName,
 		partition:   partition,
 		channelID:   channelID,
 		count:       count,
+		timestamp:   ts,
 	}
 	sa.reqs <- req
 	req.Wait()

internal/allocator/timestamp.go

@@ -19,6 +19,7 @@ type TimestampAllocator struct {
 	Allocator
 	lastTsBegin Timestamp
 	lastTsEnd   Timestamp
+	PeerID      UniqueID
 }
 
 func NewTimestampAllocator(ctx context.Context, masterAddr string) (*TimestampAllocator, error) {
@@ -36,26 +37,36 @@ func NewTimestampAllocator(ctx context.Context, masterAddr string) (*TimestampAl
 	}
 	a.Allocator.syncFunc = a.syncTs
 	a.Allocator.processFunc = a.processFunc
-	a.Allocator.checkFunc = a.checkFunc
+	a.Allocator.checkSyncFunc = a.checkSyncFunc
+	a.Allocator.pickCanDoFunc = a.pickCanDoFunc
 	return a, nil
 }
 
-func (ta *TimestampAllocator) checkFunc(timeout bool) bool {
+func (ta *TimestampAllocator) checkSyncFunc(timeout bool) bool {
-	if timeout {
+	return timeout || len(ta.toDoReqs) > 0
-		return true
-	}
-	need := uint32(0)
-	for _, req := range ta.toDoReqs {
-		iReq := req.(*tsoRequest)
-		need += iReq.count
-	}
-	return ta.lastTsBegin+Timestamp(need) >= ta.lastTsEnd
 }
 
-func (ta *TimestampAllocator) syncTs() {
+func (ta *TimestampAllocator) pickCanDoFunc() {
+	total := uint32(ta.lastTsEnd - ta.lastTsBegin)
+	need := uint32(0)
+	idx := 0
+	for _, req := range ta.toDoReqs {
+		tReq := req.(*tsoRequest)
+		need += tReq.count
+		if need <= total {
+			ta.canDoReqs = append(ta.canDoReqs, req)
+			idx++
+		} else {
+			break
+		}
+	}
+	ta.toDoReqs = ta.toDoReqs[idx:]
+}
+
+func (ta *TimestampAllocator) syncTs() bool {
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	req := &internalpb.TsoRequest{
-		PeerID: 1,
+		PeerID: ta.PeerID,
 		Role:   internalpb.PeerRole_Proxy,
 		Count:  ta.countPerRPC,
 	}
@@ -64,10 +75,11 @@ func (ta *TimestampAllocator) syncTs() {
 	cancel()
 	if err != nil {
 		log.Println("syncTimestamp Failed!!!!!")
-		return
+		return false
 	}
 	ta.lastTsBegin = resp.GetTimestamp()
 	ta.lastTsEnd = ta.lastTsBegin + uint64(resp.GetCount())
+	return true
 }
 
 func (ta *TimestampAllocator) processFunc(req request) error {

internal/master/meta_table.go

@@ -377,7 +377,7 @@ func (mt *metaTable) DeletePartition(collID UniqueID, tag string) error {
 	for _, s := range collMeta.SegmentIDs {
 		sm, ok := mt.segID2Meta[s]
 		if !ok {
-			return errors.Errorf("can't find segment id = %d", s)
+			return errors.Errorf("DeletePartition:can't find segment id = %d", s)
 		}
 		if sm.PartitionTag != tag {
 			seg = append(seg, s)
@@ -444,7 +444,7 @@ func (mt *metaTable) GetSegmentByID(segID UniqueID) (*pb.SegmentMeta, error) {
 
 	sm, ok := mt.segID2Meta[segID]
 	if !ok {
-		return nil, errors.Errorf("can't find segment id = %d", segID)
+		return nil, errors.Errorf("GetSegmentByID:can't find segment id = %d", segID)
 	}
 	return &sm, nil
 }
@@ -455,7 +455,7 @@ func (mt *metaTable) DeleteSegment(segID UniqueID) error {
 
 	segMeta, ok := mt.segID2Meta[segID]
 	if !ok {
-		return errors.Errorf("can't find segment. id = " + strconv.FormatInt(segID, 10))
+		return errors.Errorf("DeleteSegment:can't find segment. id = " + strconv.FormatInt(segID, 10))
 	}
 
 	collMeta, ok := mt.collID2Meta[segMeta.CollectionID]
@@ -483,7 +483,7 @@ func (mt *metaTable) CloseSegment(segID UniqueID, closeTs Timestamp) error {
 
 	segMeta, ok := mt.segID2Meta[segID]
 	if !ok {
-		return errors.Errorf("can't find segment id = " + strconv.FormatInt(segID, 10))
+		return errors.Errorf("CloseSegment:can't find segment id = " + strconv.FormatInt(segID, 10))
 	}
 
 	segMeta.CloseTime = closeTs

internal/master/segment_assigner.go

@@ -98,7 +98,7 @@ func (assigner *SegmentAssigner) Assign(segmentID UniqueID, numRows int) (*Assig
 		return res, err
 	}
 	physicalTs, logicalTs := tsoutil.ParseTS(ts)
-	expirePhysicalTs := physicalTs.Add(time.Duration(assigner.segmentExpireDuration))
+	expirePhysicalTs := physicalTs.Add(time.Duration(assigner.segmentExpireDuration) * time.Millisecond)
 	expireTs := tsoutil.ComposeTS(expirePhysicalTs.UnixNano()/int64(time.Millisecond), int64(logicalTs))
 	status.lastExpireTime = expireTs
 	status.assignments = append(status.assignments, &Assignment{

internal/proxy/proxy.go

@@ -69,18 +69,21 @@ func CreateProxy(ctx context.Context) (*Proxy, error) {
 		return nil, err
 	}
 	p.idAllocator = idAllocator
+	p.idAllocator.PeerID = Params.ProxyID()
 
 	tsoAllocator, err := allocator.NewTimestampAllocator(p.proxyLoopCtx, masterAddr)
 	if err != nil {
 		return nil, err
 	}
 	p.tsoAllocator = tsoAllocator
+	p.tsoAllocator.PeerID = Params.ProxyID()
 
-	segAssigner, err := allocator.NewSegIDAssigner(p.proxyLoopCtx, masterAddr)
+	segAssigner, err := allocator.NewSegIDAssigner(p.proxyLoopCtx, masterAddr, p.lastTick)
 	if err != nil {
 		panic(err)
 	}
 	p.segAssigner = segAssigner
+	p.segAssigner.PeerID = Params.ProxyID()
 
 	p.manipulationMsgStream = msgstream.NewPulsarMsgStream(p.proxyLoopCtx, Params.MsgStreamInsertBufSize())
 	p.manipulationMsgStream.SetPulsarClient(pulsarAddress)
@@ -105,6 +108,10 @@ func (p *Proxy) AddStartCallback(callbacks ...func()) {
 	p.startCallbacks = append(p.startCallbacks, callbacks...)
 }
 
+func (p *Proxy) lastTick() Timestamp {
+	return p.tick.LastTick()
+}
+
 func (p *Proxy) startProxy() error {
 	err := p.connectMaster()
 	if err != nil {

internal/proxy/proxy_test.go

@@ -10,6 +10,9 @@ import (
 	"strings"
 	"sync"
 	"testing"
+	"time"
+
+	"github.com/zilliztech/milvus-distributed/internal/util/tsoutil"
 
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
@@ -399,8 +402,9 @@ func TestProxy_AssignSegID(t *testing.T) {
 	collectionName := "CreateCollection1"
 	createCollection(t, collectionName)
 	testNum := 1
+	futureTS := tsoutil.ComposeTS(time.Now().Add(time.Second*-1000).UnixNano()/int64(time.Millisecond), 0)
 	for i := 0; i < testNum; i++ {
-		segID, err := proxyServer.segAssigner.GetSegmentID(collectionName, Params.defaultPartitionTag(), int32(i), 200000)
+		segID, err := proxyServer.segAssigner.GetSegmentID(collectionName, Params.defaultPartitionTag(), int32(i), 200000, futureTS)
 		assert.Nil(t, err)
 		fmt.Println("segID", segID)
 	}

internal/proxy/repack_func.go

@@ -4,6 +4,8 @@ import (
 	"log"
 	"sort"
 
+	"github.com/zilliztech/milvus-distributed/internal/util/typeutil"
+
 	"github.com/zilliztech/milvus-distributed/internal/allocator"
 	"github.com/zilliztech/milvus-distributed/internal/errors"
 	"github.com/zilliztech/milvus-distributed/internal/msgstream"
@@ -19,6 +21,7 @@ func insertRepackFunc(tsMsgs []msgstream.TsMsg,
 	result := make(map[int32]*msgstream.MsgPack)
 
 	channelCountMap := make(map[UniqueID]map[int32]uint32)    //  reqID --> channelID to count
+	channelMaxTSMap := make(map[UniqueID]map[int32]Timestamp) //  reqID --> channelID to max Timestamp
 	reqSchemaMap := make(map[UniqueID][]string)
 
 	for i, request := range tsMsgs {
@@ -45,12 +48,23 @@ func insertRepackFunc(tsMsgs []msgstream.TsMsg,
 			channelCountMap[reqID] = make(map[int32]uint32)
 		}
 
+		if _, ok := channelMaxTSMap[reqID]; !ok {
+			channelMaxTSMap[reqID] = make(map[int32]Timestamp)
+		}
+
 		if _, ok := reqSchemaMap[reqID]; !ok {
 			reqSchemaMap[reqID] = []string{insertRequest.CollectionName, insertRequest.PartitionTag}
 		}
 
-		for _, channelID := range keys {
+		for idx, channelID := range keys {
 			channelCountMap[reqID][channelID]++
+			if _, ok := channelMaxTSMap[reqID][channelID]; !ok {
+				channelMaxTSMap[reqID][channelID] = typeutil.ZeroTimestamp
+			}
+			ts := insertRequest.Timestamps[idx]
+			if channelMaxTSMap[reqID][channelID] < ts {
+				channelMaxTSMap[reqID][channelID] = ts
+			}
 		}
 
 	}
@@ -64,7 +78,12 @@ func insertRepackFunc(tsMsgs []msgstream.TsMsg,
 		schema := reqSchemaMap[reqID]
 		collName, partitionTag := schema[0], schema[1]
 		for channelID, count := range countInfo {
-			mapInfo, err := segIDAssigner.GetSegmentID(collName, partitionTag, channelID, count)
+			ts, ok := channelMaxTSMap[reqID][channelID]
+			if !ok {
+				ts = typeutil.ZeroTimestamp
+				log.Println("Warning: did not get max Timstamp!")
+			}
+			mapInfo, err := segIDAssigner.GetSegmentID(collName, partitionTag, channelID, count, ts)
 			if err != nil {
 				return nil, err
 			}

internal/proxy/timetick.go

@@ -104,6 +104,10 @@ func (tt *timeTick) tickLoop() {
 	}
 }
 
+func (tt *timeTick) LastTick() Timestamp {
+	return tt.lastTick
+}
+
 func (tt *timeTick) Start() error {
 	tt.lastTick = 0
 	ts, err := tt.tsoAllocator.AllocOne()

internal/writenode/data_sync_service_test.go

@@ -24,7 +24,7 @@ import (
 // NOTE: start pulsar before test
 func TestDataSyncService_Start(t *testing.T) {
 	newMeta()
-	const ctxTimeInMillisecond = 200
+	const ctxTimeInMillisecond = 2000
 	const closeWithDeadline = true
 	var ctx context.Context