diff --git a/internal/core/src/common/LoadInfo.h b/internal/core/src/common/LoadInfo.h
index d2401563d5..ec6655af46 100644
--- a/internal/core/src/common/LoadInfo.h
+++ b/internal/core/src/common/LoadInfo.h
@@ -16,6 +16,7 @@
 #include "knowhere/index/vector_index/VecIndex.h"
 
 struct LoadIndexInfo {
+    std::string field_name;
     int64_t field_id;
     std::map<std::string, std::string> index_params;
     milvus::knowhere::VecIndexPtr index;
diff --git a/internal/core/src/segcore/load_index_c.cpp b/internal/core/src/segcore/load_index_c.cpp
index b58295b049..21d5637f1b 100644
--- a/internal/core/src/segcore/load_index_c.cpp
+++ b/internal/core/src/segcore/load_index_c.cpp
@@ -59,9 +59,11 @@ AppendIndexParam(CLoadIndexInfo c_load_index_info, const char* c_index_key, cons
 }
 
 CStatus
-AppendFieldInfo(CLoadIndexInfo c_load_index_info, int64_t field_id) {
+AppendFieldInfo(CLoadIndexInfo c_load_index_info, const char* c_field_name, int64_t field_id) {
     try {
         auto load_index_info = (LoadIndexInfo*)c_load_index_info;
+        std::string field_name(c_field_name);
+        load_index_info->field_name = field_name;
         load_index_info->field_id = field_id;
 
         auto status = CStatus();
@@ -95,6 +97,7 @@ AppendIndex(CLoadIndexInfo c_load_index_info, CBinarySet c_binary_set) {
         load_index_info->index =
             milvus::knowhere::VecIndexFactory::GetInstance().CreateVecIndex(index_params["index_type"], mode);
         load_index_info->index->Load(*binary_set);
+
         auto status = CStatus();
         status.error_code = Success;
         status.error_msg = "";
diff --git a/internal/core/src/segcore/load_index_c.h b/internal/core/src/segcore/load_index_c.h
index 85df9c4079..0718d59406 100644
--- a/internal/core/src/segcore/load_index_c.h
+++ b/internal/core/src/segcore/load_index_c.h
@@ -33,7 +33,7 @@ CStatus
 AppendIndexParam(CLoadIndexInfo c_load_index_info, const char* index_key, const char* index_value);
 
 CStatus
-AppendFieldInfo(CLoadIndexInfo c_load_index_info, int64_t field_id);
+AppendFieldInfo(CLoadIndexInfo c_load_index_info, const char* field_name, int64_t field_id);
 
 CStatus
 AppendIndex(CLoadIndexInfo c_load_index_info, CBinarySet c_binary_set);
diff --git a/internal/core/unittest/test_c_api.cpp b/internal/core/unittest/test_c_api.cpp
index 2e972fc244..73a32d9391 100644
--- a/internal/core/unittest/test_c_api.cpp
+++ b/internal/core/unittest/test_c_api.cpp
@@ -781,7 +781,7 @@ TEST(CApiTest, LoadIndexInfo) {
     status = AppendIndexParam(c_load_index_info, index_param_key2.data(), index_param_value2.data());
     assert(status.error_code == Success);
     std::string field_name = "field0";
-    status = AppendFieldInfo(c_load_index_info, 0);
+    status = AppendFieldInfo(c_load_index_info, field_name.data(), 0);
     assert(status.error_code == Success);
     status = AppendIndex(c_load_index_info, c_binary_set);
     assert(status.error_code == Success);
@@ -937,7 +937,7 @@ TEST(CApiTest, UpdateSegmentIndex_Without_Predicate) {
     AppendIndexParam(c_load_index_info, index_type_key.c_str(), index_type_value.c_str());
     AppendIndexParam(c_load_index_info, index_mode_key.c_str(), index_mode_value.c_str());
     AppendIndexParam(c_load_index_info, metric_type_key.c_str(), metric_type_value.c_str());
-    AppendFieldInfo(c_load_index_info, 100);
+    AppendFieldInfo(c_load_index_info, "fakevec", 100);
     AppendIndex(c_load_index_info, (CBinarySet)&binary_set);
 
     status = UpdateSegmentIndex(segment, c_load_index_info);
@@ -1074,7 +1074,7 @@ TEST(CApiTest, UpdateSegmentIndex_With_float_Predicate_Range) {
     AppendIndexParam(c_load_index_info, index_type_key.c_str(), index_type_value.c_str());
     AppendIndexParam(c_load_index_info, index_mode_key.c_str(), index_mode_value.c_str());
     AppendIndexParam(c_load_index_info, metric_type_key.c_str(), metric_type_value.c_str());
-    AppendFieldInfo(c_load_index_info, 100);
+    AppendFieldInfo(c_load_index_info, "fakevec", 100);
     AppendIndex(c_load_index_info, (CBinarySet)&binary_set);
 
     status = UpdateSegmentIndex(segment, c_load_index_info);
@@ -1211,7 +1211,7 @@ TEST(CApiTest, UpdateSegmentIndex_With_float_Predicate_Term) {
     AppendIndexParam(c_load_index_info, index_type_key.c_str(), index_type_value.c_str());
     AppendIndexParam(c_load_index_info, index_mode_key.c_str(), index_mode_value.c_str());
     AppendIndexParam(c_load_index_info, metric_type_key.c_str(), metric_type_value.c_str());
-    AppendFieldInfo(c_load_index_info, 100);
+    AppendFieldInfo(c_load_index_info, "fakevec", 100);
     AppendIndex(c_load_index_info, (CBinarySet)&binary_set);
 
     status = UpdateSegmentIndex(segment, c_load_index_info);
@@ -1350,7 +1350,7 @@ TEST(CApiTest, UpdateSegmentIndex_With_binary_Predicate_Range) {
     AppendIndexParam(c_load_index_info, index_type_key.c_str(), index_type_value.c_str());
     AppendIndexParam(c_load_index_info, index_mode_key.c_str(), index_mode_value.c_str());
     AppendIndexParam(c_load_index_info, metric_type_key.c_str(), metric_type_value.c_str());
-    AppendFieldInfo(c_load_index_info, 100);
+    AppendFieldInfo(c_load_index_info, "fakevec", 100);
     AppendIndex(c_load_index_info, (CBinarySet)&binary_set);
 
     status = UpdateSegmentIndex(segment, c_load_index_info);
@@ -1488,7 +1488,7 @@ TEST(CApiTest, UpdateSegmentIndex_With_binary_Predicate_Term) {
     AppendIndexParam(c_load_index_info, index_type_key.c_str(), index_type_value.c_str());
     AppendIndexParam(c_load_index_info, index_mode_key.c_str(), index_mode_value.c_str());
     AppendIndexParam(c_load_index_info, metric_type_key.c_str(), metric_type_value.c_str());
-    AppendFieldInfo(c_load_index_info, 100);
+    AppendFieldInfo(c_load_index_info, "fakevec", 100);
     AppendIndex(c_load_index_info, (CBinarySet)&binary_set);
 
     status = UpdateSegmentIndex(segment, c_load_index_info);
@@ -1665,7 +1665,7 @@ TEST(CApiTest, SealedSegment_search_float_Predicate_Range) {
     AppendIndexParam(c_load_index_info, index_type_key.c_str(), index_type_value.c_str());
     AppendIndexParam(c_load_index_info, index_mode_key.c_str(), index_mode_value.c_str());
     AppendIndexParam(c_load_index_info, metric_type_key.c_str(), metric_type_value.c_str());
-    AppendFieldInfo(c_load_index_info, 100);
+    AppendFieldInfo(c_load_index_info, "fakevec", 100);
     AppendIndex(c_load_index_info, (CBinarySet)&binary_set);
 
     auto load_index_info = (LoadIndexInfo*)c_load_index_info;
diff --git a/internal/core/unittest/test_sealed.cpp b/internal/core/unittest/test_sealed.cpp
index 08ad60375e..0c4ffe5182 100644
--- a/internal/core/unittest/test_sealed.cpp
+++ b/internal/core/unittest/test_sealed.cpp
@@ -105,6 +105,7 @@ TEST(Sealed, without_predicate) {
     auto ref_result = QueryResultToJson(qr);
 
     LoadIndexInfo load_info;
+    load_info.field_name = "fakevec";
     load_info.field_id = fake_id.get();
     load_info.index = indexing;
     load_info.index_params["metric_type"] = "L2";
@@ -197,6 +198,7 @@ TEST(Sealed, with_predicate) {
     auto result = indexing->Query(query_dataset, conf, nullptr);
 
     LoadIndexInfo load_info;
+    load_info.field_name = "fakevec";
     load_info.field_id = fake_id.get();
     load_info.index = indexing;
     load_info.index_params["metric_type"] = "L2";
@@ -310,6 +312,7 @@ TEST(Sealed, LoadFieldData) {
 
     LoadIndexInfo vec_info;
     vec_info.field_id = fakevec_id.get();
+    vec_info.field_name = "fakevec";
     vec_info.index = indexing;
     vec_info.index_params["metric_type"] = milvus::knowhere::Metric::L2;
     segment->LoadIndex(vec_info);
diff --git a/internal/dataservice/channel.go b/internal/dataservice/channel.go
index d67b16c95a..f2a18c3c91 100644
--- a/internal/dataservice/channel.go
+++ b/internal/dataservice/channel.go
@@ -1,76 +1,38 @@
 package dataservice
 
 import (
-	"fmt"
 	"strconv"
 	"sync"
 )
 
 type (
-	channelGroup         []string
 	insertChannelManager struct {
 		mu            sync.RWMutex
 		count         int
-		channelGroups map[UniqueID][]channelGroup // collection id to channel ranges
+		channelGroups map[UniqueID][]string // collection id to channel ranges
 	}
 )
 
-func (cr channelGroup) Contains(channelName string) bool {
-	for _, name := range cr {
-		if name == channelName {
-			return true
-		}
-	}
-	return false
-}
-
 func newInsertChannelManager() *insertChannelManager {
 	return &insertChannelManager{
 		count:         0,
-		channelGroups: make(map[UniqueID][]channelGroup),
+		channelGroups: make(map[UniqueID][]string),
 	}
 }
 
-func (cm *insertChannelManager) GetChannels(collectionID UniqueID, groupNum int) ([]channelGroup, error) {
+func (cm *insertChannelManager) GetChannels(collectionID UniqueID) ([]string, error) {
 	cm.mu.Lock()
 	defer cm.mu.Unlock()
 	if _, ok := cm.channelGroups[collectionID]; ok {
 		return cm.channelGroups[collectionID], nil
 	}
 	channels := Params.InsertChannelNumPerCollection
-	m, n := channels/int64(groupNum), channels%int64(groupNum)
-	cg := make([]channelGroup, 0)
-	var i, j int64 = 0, 0
-	for i < channels {
-		var group []string
-		if j < n {
-			group = make([]string, m+1)
-		} else {
-			group = make([]string, m)
-		}
-		for k := 0; k < len(group); k++ {
-			group[k] = Params.InsertChannelPrefixName + strconv.Itoa(cm.count)
-			cm.count++
-		}
-		i += int64(len(group))
-		j++
-		cg = append(cg, group)
+	cg := make([]string, channels)
+	var i int64 = 0
+	for ; i < channels; i++ {
+		cg[i] = Params.InsertChannelPrefixName + strconv.Itoa(cm.count)
+		cm.count++
 	}
 	cm.channelGroups[collectionID] = cg
 	return cg, nil
 }
-
-func (cm *insertChannelManager) GetChannelGroup(collectionID UniqueID, channelName string) (channelGroup, error) {
-	cm.mu.RLock()
-	defer cm.mu.RUnlock()
-	_, ok := cm.channelGroups[collectionID]
-	if !ok {
-		return nil, fmt.Errorf("can not find collection %d", collectionID)
-	}
-	for _, cr := range cm.channelGroups[collectionID] {
-		if cr.Contains(channelName) {
-			return cr, nil
-		}
-	}
-	return nil, fmt.Errorf("channel name %s not found", channelName)
-}
diff --git a/internal/dataservice/channel_test.go b/internal/dataservice/channel_test.go
index 70a1dab871..c38f442629 100644
--- a/internal/dataservice/channel_test.go
+++ b/internal/dataservice/channel_test.go
@@ -1,33 +1,21 @@
 package dataservice
 
 import (
+	"strconv"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 )
 
-func TestChannelAllocation(t *testing.T) {
+func TestGetChannel(t *testing.T) {
 	Params.Init()
 	Params.InsertChannelNumPerCollection = 4
+	Params.InsertChannelPrefixName = "channel"
 	manager := newInsertChannelManager()
-	cases := []struct {
-		collectionID   UniqueID
-		groupNum       int
-		expectGroupNum int
-	}{
-		{1, 4, 4},
-		{1, 4, 4},
-		{2, 1, 1},
-		{3, 5, 4},
-	}
-	for _, c := range cases {
-		channels, err := manager.GetChannels(c.collectionID, c.expectGroupNum)
-		assert.Nil(t, err)
-		assert.EqualValues(t, c.expectGroupNum, len(channels))
-		total := 0
-		for _, channel := range channels {
-			total += len(channel)
-		}
-		assert.EqualValues(t, Params.InsertChannelNumPerCollection, total)
+	channels, err := manager.GetChannels(1)
+	assert.Nil(t, err)
+	assert.EqualValues(t, Params.InsertChannelNumPerCollection, len(channels))
+	for i := 0; i < len(channels); i++ {
+		assert.EqualValues(t, Params.InsertChannelPrefixName+strconv.Itoa(i), channels[i])
 	}
 }
diff --git a/internal/dataservice/cluster.go b/internal/dataservice/cluster.go
index 9964b34504..d0c92da48d 100644
--- a/internal/dataservice/cluster.go
+++ b/internal/dataservice/cluster.go
@@ -23,16 +23,18 @@ type (
 		channelNum int
 	}
 	dataNodeCluster struct {
-		mu       sync.RWMutex
-		finishCh chan struct{}
-		nodes    []*dataNode
+		mu                sync.RWMutex
+		finishCh          chan struct{}
+		nodes             []*dataNode
+		watchedCollection map[UniqueID]bool
 	}
 )
 
 func newDataNodeCluster(finishCh chan struct{}) *dataNodeCluster {
 	return &dataNodeCluster{
-		finishCh: finishCh,
-		nodes:    make([]*dataNode, 0),
+		finishCh:          finishCh,
+		nodes:             make([]*dataNode, 0),
+		watchedCollection: make(map[UniqueID]bool),
 	}
 }
 
@@ -49,7 +51,7 @@ func (c *dataNodeCluster) Register(dataNode *dataNode) {
 
 func (c *dataNodeCluster) checkDataNodeNotExist(ip string, port int64) bool {
 	for _, node := range c.nodes {
-		if node.address.ip == ip || node.address.port == port {
+		if node.address.ip == ip && node.address.port == port {
 			return false
 		}
 	}
@@ -70,12 +72,25 @@ func (c *dataNodeCluster) GetNodeIDs() []int64 {
 	return ret
 }
 
-func (c *dataNodeCluster) WatchInsertChannels(groups []channelGroup) {
+func (c *dataNodeCluster) WatchInsertChannels(collectionID UniqueID, channels []string) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
+	if c.watchedCollection[collectionID] {
+		return
+	}
 	sort.Slice(c.nodes, func(i, j int) bool { return c.nodes[i].channelNum < c.nodes[j].channelNum })
+	var groups [][]string
+	if len(channels) < len(c.nodes) {
+		groups = make([][]string, len(channels))
+	} else {
+		groups = make([][]string, len(c.nodes))
+	}
+	length := len(groups)
+	for i, channel := range channels {
+		groups[i%length] = append(groups[i%length], channel)
+	}
 	for i, group := range groups {
-		_, err := c.nodes[i%len(c.nodes)].client.WatchDmChannels(&datapb.WatchDmChannelRequest{
+		resp, err := c.nodes[i].client.WatchDmChannels(&datapb.WatchDmChannelRequest{
 			Base: &commonpb.MsgBase{
 				MsgType:   commonpb.MsgType_kDescribeCollection,
 				MsgID:     -1, // todo
@@ -88,7 +103,13 @@ func (c *dataNodeCluster) WatchInsertChannels(groups []channelGroup) {
 			log.Println(err.Error())
 			continue
 		}
+		if resp.ErrorCode != commonpb.ErrorCode_SUCCESS {
+			log.Println(resp.Reason)
+			continue
+		}
+		c.nodes[i].channelNum += len(group)
 	}
+	c.watchedCollection[collectionID] = true
 }
 
 func (c *dataNodeCluster) GetDataNodeStates() ([]*internalpb2.ComponentInfo, error) {
@@ -125,3 +146,12 @@ func (c *dataNodeCluster) ShutDownClients() {
 		}
 	}
 }
+
+// Clear only for test
+func (c *dataNodeCluster) Clear() {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.finishCh = make(chan struct{})
+	c.nodes = make([]*dataNode, 0)
+	c.watchedCollection = make(map[UniqueID]bool)
+}
diff --git a/internal/dataservice/cluster_test.go b/internal/dataservice/cluster_test.go
new file mode 100644
index 0000000000..a8fbc60e3b
--- /dev/null
+++ b/internal/dataservice/cluster_test.go
@@ -0,0 +1,42 @@
+package dataservice
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWatchChannels(t *testing.T) {
+	Params.Init()
+	Params.DataNodeNum = 3
+	cases := []struct {
+		collectionID UniqueID
+		channels     []string
+		channelNums  []int
+	}{
+		{1, []string{"c1"}, []int{1, 0, 0}},
+		{1, []string{"c1", "c2", "c3"}, []int{1, 1, 1}},
+		{1, []string{"c1", "c2", "c3", "c4"}, []int{2, 1, 1}},
+		{1, []string{"c1", "c2", "c3", "c4", "c5", "c6", "c7"}, []int{3, 2, 2}},
+	}
+
+	cluster := newDataNodeCluster(make(chan struct{}))
+	for _, c := range cases {
+		for i := 0; i < Params.DataNodeNum; i++ {
+			cluster.Register(&dataNode{
+				id: int64(i),
+				address: struct {
+					ip   string
+					port int64
+				}{"localhost", int64(9999 + i)},
+				client:     newMockDataNodeClient(),
+				channelNum: 0,
+			})
+		}
+		cluster.WatchInsertChannels(c.collectionID, c.channels)
+		for i := 0; i < len(cluster.nodes); i++ {
+			assert.EqualValues(t, c.channelNums[i], cluster.nodes[i].channelNum)
+		}
+		cluster.Clear()
+	}
+}
diff --git a/internal/dataservice/meta.go b/internal/dataservice/meta.go
index f6ff1bb116..6a2c5ca06c 100644
--- a/internal/dataservice/meta.go
+++ b/internal/dataservice/meta.go
@@ -386,16 +386,16 @@ func (meta *meta) removeSegments(segIDs []UniqueID) error {
 	return meta.client.MultiRemove(segmentPaths)
 }
 
-func BuildSegment(collectionID UniqueID, partitionID UniqueID, segmentID UniqueID, channelRange []string) (*datapb.SegmentInfo, error) {
+func BuildSegment(collectionID UniqueID, partitionID UniqueID, segmentID UniqueID, channelName string) (*datapb.SegmentInfo, error) {
 	return &datapb.SegmentInfo{
-		SegmentID:      segmentID,
-		CollectionID:   collectionID,
-		PartitionID:    partitionID,
-		InsertChannels: channelRange,
-		OpenTime:       0,
-		SealedTime:     0,
-		NumRows:        0,
-		MemSize:        0,
-		State:          datapb.SegmentState_SegmentGrowing,
+		SegmentID:     segmentID,
+		CollectionID:  collectionID,
+		PartitionID:   partitionID,
+		InsertChannel: channelName,
+		OpenTime:      0,
+		SealedTime:    0,
+		NumRows:       0,
+		MemSize:       0,
+		State:         datapb.SegmentState_SegmentGrowing,
 	}, nil
 }
diff --git a/internal/dataservice/meta_test.go b/internal/dataservice/meta_test.go
index c03eb1a6c2..437ca3c41f 100644
--- a/internal/dataservice/meta_test.go
+++ b/internal/dataservice/meta_test.go
@@ -48,7 +48,7 @@ func TestSegment(t *testing.T) {
 	assert.Nil(t, err)
 	segID, err := mockAllocator.allocID()
 	assert.Nil(t, err)
-	segmentInfo, err := BuildSegment(id, 100, segID, []string{"c1", "c2"})
+	segmentInfo, err := BuildSegment(id, 100, segID, "c1")
 	assert.Nil(t, err)
 	err = meta.AddSegment(segmentInfo)
 	assert.Nil(t, err)
@@ -114,14 +114,14 @@ func TestGetCount(t *testing.T) {
 	nums, err := meta.GetNumRowsOfCollection(id)
 	assert.Nil(t, err)
 	assert.EqualValues(t, 0, nums)
-	segment, err := BuildSegment(id, 100, segID, []string{"c1"})
+	segment, err := BuildSegment(id, 100, segID, "c1")
 	assert.Nil(t, err)
 	segment.NumRows = 100
 	err = meta.AddSegment(segment)
 	assert.Nil(t, err)
 	segID, err = mockAllocator.allocID()
 	assert.Nil(t, err)
-	segment, err = BuildSegment(id, 100, segID, []string{"c1"})
+	segment, err = BuildSegment(id, 100, segID, "c1")
 	assert.Nil(t, err)
 	segment.NumRows = 300
 	err = meta.AddSegment(segment)
diff --git a/internal/dataservice/mock.go b/internal/dataservice/mock.go
index 2922d33abf..105d958c7d 100644
--- a/internal/dataservice/mock.go
+++ b/internal/dataservice/mock.go
@@ -4,6 +4,10 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
+	"github.com/zilliztech/milvus-distributed/internal/proto/datapb"
+	"github.com/zilliztech/milvus-distributed/internal/proto/internalpb2"
+
 	"github.com/zilliztech/milvus-distributed/internal/proto/schemapb"
 
 	memkv "github.com/zilliztech/milvus-distributed/internal/kv/mem"
@@ -46,3 +50,27 @@ func newTestSchema() *schemapb.CollectionSchema {
 		},
 	}
 }
+
+type mockDataNodeClient struct {
+}
+
+func newMockDataNodeClient() *mockDataNodeClient {
+	return &mockDataNodeClient{}
+}
+
+func (c *mockDataNodeClient) WatchDmChannels(in *datapb.WatchDmChannelRequest) (*commonpb.Status, error) {
+	return &commonpb.Status{ErrorCode: commonpb.ErrorCode_SUCCESS}, nil
+}
+
+func (c *mockDataNodeClient) GetComponentStates(empty *commonpb.Empty) (*internalpb2.ComponentStates, error) {
+	// todo
+	return nil, nil
+}
+
+func (c *mockDataNodeClient) FlushSegments(in *datapb.FlushSegRequest) (*commonpb.Status, error) {
+	return &commonpb.Status{ErrorCode: commonpb.ErrorCode_SUCCESS}, nil
+}
+
+func (c *mockDataNodeClient) Stop() error {
+	return nil
+}
diff --git a/internal/dataservice/segment_allocator.go b/internal/dataservice/segment_allocator.go
index f9d13892a3..d15d3b66a0 100644
--- a/internal/dataservice/segment_allocator.go
+++ b/internal/dataservice/segment_allocator.go
@@ -54,7 +54,7 @@ type (
 		sealed         bool
 		lastExpireTime Timestamp
 		allocations    []*allocation
-		channelGroup   channelGroup
+		insertChannel  string
 	}
 	allocation struct {
 		rowNums    int
@@ -100,7 +100,7 @@ func (allocator *segmentAllocatorImpl) OpenSegment(segmentInfo *datapb.SegmentIn
 		total:          totalRows,
 		sealed:         false,
 		lastExpireTime: 0,
-		channelGroup:   segmentInfo.InsertChannels,
+		insertChannel:  segmentInfo.InsertChannel,
 	}
 	return nil
 }
@@ -112,7 +112,7 @@ func (allocator *segmentAllocatorImpl) AllocSegment(collectionID UniqueID,
 
 	for _, segStatus := range allocator.segments {
 		if segStatus.sealed || segStatus.collectionID != collectionID || segStatus.partitionID != partitionID ||
-			!segStatus.channelGroup.Contains(channelName) {
+			segStatus.insertChannel != channelName {
 			continue
 		}
 		var success bool
diff --git a/internal/dataservice/segment_allocator_test.go b/internal/dataservice/segment_allocator_test.go
index 03697593ae..d0e248edc0 100644
--- a/internal/dataservice/segment_allocator_test.go
+++ b/internal/dataservice/segment_allocator_test.go
@@ -1,11 +1,14 @@
 package dataservice
 
 import (
+	"log"
 	"math"
 	"strconv"
 	"testing"
 	"time"
 
+	"github.com/zilliztech/milvus-distributed/internal/util/tsoutil"
+
 	"github.com/stretchr/testify/assert"
 )
 
@@ -27,7 +30,7 @@ func TestAllocSegment(t *testing.T) {
 	assert.Nil(t, err)
 	id, err := mockAllocator.allocID()
 	assert.Nil(t, err)
-	segmentInfo, err := BuildSegment(collID, 100, id, []string{"c1", "c2"})
+	segmentInfo, err := BuildSegment(collID, 100, id, "c1")
 	assert.Nil(t, err)
 	err = meta.AddSegment(segmentInfo)
 	assert.Nil(t, err)
@@ -80,7 +83,7 @@ func TestSealSegment(t *testing.T) {
 	for i := 0; i < 10; i++ {
 		id, err := mockAllocator.allocID()
 		assert.Nil(t, err)
-		segmentInfo, err := BuildSegment(collID, 100, id, []string{"c" + strconv.Itoa(i)})
+		segmentInfo, err := BuildSegment(collID, 100, id, "c"+strconv.Itoa(i))
 		assert.Nil(t, err)
 		err = meta.AddSegment(segmentInfo)
 		assert.Nil(t, err)
@@ -115,21 +118,32 @@ func TestExpireSegment(t *testing.T) {
 	assert.Nil(t, err)
 	id, err := mockAllocator.allocID()
 	assert.Nil(t, err)
-	segmentInfo, err := BuildSegment(collID, 100, id, []string{"c1", "c2"})
+	segmentInfo, err := BuildSegment(collID, 100, id, "c1")
 	assert.Nil(t, err)
 	err = meta.AddSegment(segmentInfo)
 	assert.Nil(t, err)
 	err = segAllocator.OpenSegment(segmentInfo)
 	assert.Nil(t, err)
 
-	id1, _, _, err := segAllocator.AllocSegment(collID, 100, "c1", 10)
+	id1, _, et, err := segAllocator.AllocSegment(collID, 100, "c1", 10)
+	ts2, _ := tsoutil.ParseTS(et)
+	log.Printf("physical ts: %s", ts2.String())
 	assert.Nil(t, err)
-	time.Sleep(time.Duration(Params.SegIDAssignExpiration) * time.Millisecond)
+
 	ts, err := mockAllocator.allocTimestamp()
 	assert.Nil(t, err)
+	t1, _ := tsoutil.ParseTS(ts)
+	log.Printf("before ts: %s", t1.String())
+	time.Sleep(time.Duration(Params.SegIDAssignExpiration+1000) * time.Millisecond)
+	ts, err = mockAllocator.allocTimestamp()
+	assert.Nil(t, err)
 	err = segAllocator.ExpireAllocations(ts)
 	assert.Nil(t, err)
 	expired, err := segAllocator.IsAllocationsExpired(id1, ts)
+	if et > ts {
+		tsPhy, _ := tsoutil.ParseTS(ts)
+		log.Printf("ts %s", tsPhy.String())
+	}
 	assert.Nil(t, err)
 	assert.True(t, expired)
 	assert.EqualValues(t, 0, len(segAllocator.segments[id1].allocations))
diff --git a/internal/dataservice/server.go b/internal/dataservice/server.go
index a9a028c2da..a0f9349230 100644
--- a/internal/dataservice/server.go
+++ b/internal/dataservice/server.go
@@ -555,16 +555,11 @@ func (s *Server) AssignSegmentID(req *datapb.AssignSegIDRequest) (*datapb.Assign
 }
 
 func (s *Server) openNewSegment(collectionID UniqueID, partitionID UniqueID, channelName string) error {
-	group, err := s.insertChannelMgr.GetChannelGroup(collectionID, channelName)
-	if err != nil {
-		return err
-	}
-
 	id, err := s.allocator.allocID()
 	if err != nil {
 		return err
 	}
-	segmentInfo, err := BuildSegment(collectionID, partitionID, id, group)
+	segmentInfo, err := BuildSegment(collectionID, partitionID, id, channelName)
 	if err != nil {
 		return err
 	}
@@ -683,16 +678,12 @@ func (s *Server) GetInsertChannels(req *datapb.InsertChannelRequest) ([]string,
 	if !s.checkStateIsHealthy() {
 		return nil, errors.New("server is initializing")
 	}
-	channelGroups, err := s.insertChannelMgr.GetChannels(req.CollectionID, s.cluster.GetNumOfNodes())
+	channels, err := s.insertChannelMgr.GetChannels(req.CollectionID)
 	if err != nil {
 		return nil, err
 	}
 
-	channels := make([]string, 0)
-	for _, group := range channelGroups {
-		channels = append(channels, group...)
-	}
-	s.cluster.WatchInsertChannels(channelGroups)
+	s.cluster.WatchInsertChannels(req.CollectionID, channels)
 	return channels, nil
 }
 
diff --git a/internal/dataservice/watcher_test.go b/internal/dataservice/watcher_test.go
index 85af18e530..e476f9f02a 100644
--- a/internal/dataservice/watcher_test.go
+++ b/internal/dataservice/watcher_test.go
@@ -52,7 +52,7 @@ func TestDataNodeTTWatcher(t *testing.T) {
 		segID, err := allocator.allocID()
 		segmentIDs[i] = segID
 		assert.Nil(t, err)
-		segmentInfo, err := BuildSegment(id, 100, segID, []string{"channel" + strconv.Itoa(i)})
+		segmentInfo, err := BuildSegment(id, 100, segID, "channel"+strconv.Itoa(i))
 		assert.Nil(t, err)
 		err = meta.AddSegment(segmentInfo)
 		assert.Nil(t, err)
@@ -64,7 +64,7 @@ func TestDataNodeTTWatcher(t *testing.T) {
 		}
 	}
 
-	time.Sleep(time.Duration(Params.SegIDAssignExpiration) * time.Millisecond)
+	time.Sleep(time.Duration(Params.SegIDAssignExpiration+1000) * time.Millisecond)
 	for i, c := range cases {
 		if c.allocation && !c.expired {
 			_, _, _, err := segAllocator.AllocSegment(id, 100, "channel"+strconv.Itoa(i), 100)
diff --git a/internal/distributed/masterservice/masterservice_test.go b/internal/distributed/masterservice/masterservice_test.go
index fca7ce4d02..f473ea5a18 100644
--- a/internal/distributed/masterservice/masterservice_test.go
+++ b/internal/distributed/masterservice/masterservice_test.go
@@ -98,7 +98,7 @@ func TestGrpcService(t *testing.T) {
 
 	var binlogLock sync.Mutex
 	binlogPathArray := make([]string, 0, 16)
-	core.BuildIndexReq = func(binlog []string, typeParams []*commonpb.KeyValuePair, indexParams []*commonpb.KeyValuePair, indexID typeutil.UniqueID, indexName string) (typeutil.UniqueID, error) {
+	core.BuildIndexReq = func(binlog []string, typeParams []*commonpb.KeyValuePair, indexParams []*commonpb.KeyValuePair) (typeutil.UniqueID, error) {
 		binlogLock.Lock()
 		defer binlogLock.Unlock()
 		binlogPathArray = append(binlogPathArray, binlog...)
diff --git a/internal/masterservice/master_service.go b/internal/masterservice/master_service.go
index e164ce7ba9..0b62fd1482 100644
--- a/internal/masterservice/master_service.go
+++ b/internal/masterservice/master_service.go
@@ -152,7 +152,7 @@ type Core struct {
 	GetBinlogFilePathsFromDataServiceReq func(segID typeutil.UniqueID, fieldID typeutil.UniqueID) ([]string, error)
 
 	//TODO, call index builder's client to build index, return build id
-	BuildIndexReq func(binlog []string, typeParams []*commonpb.KeyValuePair, indexParams []*commonpb.KeyValuePair, indexID typeutil.UniqueID, indexName string) (typeutil.UniqueID, error)
+	BuildIndexReq func(binlog []string, typeParams []*commonpb.KeyValuePair, indexParams []*commonpb.KeyValuePair) (typeutil.UniqueID, error)
 
 	//TODO, proxy service interface, notify proxy service to drop collection
 	InvalidateCollectionMetaCache func(ts typeutil.Timestamp, dbName string, collectionName string) error
@@ -671,13 +671,11 @@ func (c *Core) SetDataService(s DataServiceInterface) error {
 }
 
 func (c *Core) SetIndexService(s IndexServiceInterface) error {
-	c.BuildIndexReq = func(binlog []string, typeParams []*commonpb.KeyValuePair, indexParams []*commonpb.KeyValuePair, indexID typeutil.UniqueID, indexName string) (typeutil.UniqueID, error) {
+	c.BuildIndexReq = func(binlog []string, typeParams []*commonpb.KeyValuePair, indexParams []*commonpb.KeyValuePair) (typeutil.UniqueID, error) {
 		rsp, err := s.BuildIndex(&indexpb.BuildIndexRequest{
 			DataPaths:   binlog,
 			TypeParams:  typeParams,
 			IndexParams: indexParams,
-			IndexID:     indexID,
-			IndexName:   indexName,
 		})
 		if err != nil {
 			return 0, err
diff --git a/internal/masterservice/task.go b/internal/masterservice/task.go
index 2d6648d4f1..3586151c28 100644
--- a/internal/masterservice/task.go
+++ b/internal/masterservice/task.go
@@ -628,7 +628,7 @@ func (t *CreateIndexTask) BuildIndex() error {
 			})
 		}
 	}
-	bldID, err = t.core.BuildIndexReq(binlogs, t.fieldSchema.TypeParams, t.indexParams, idxID, t.indexName)
+	bldID, err = t.core.BuildIndexReq(binlogs, t.fieldSchema.TypeParams, t.indexParams)
 	if err != nil {
 		return err
 	}
diff --git a/internal/proto/data_service.proto b/internal/proto/data_service.proto
index a30b822e4d..60dcdd8f87 100644
--- a/internal/proto/data_service.proto
+++ b/internal/proto/data_service.proto
@@ -137,7 +137,7 @@ message SegmentInfo {
   int64 segmentID = 1;
   int64 collectionID = 2;
   int64 partitionID = 3;
-  repeated string insert_channels = 4;
+  string insert_channel = 4;
   uint64 open_time = 5;
   uint64 sealed_time = 6;
   uint64 flushed_time = 7;
diff --git a/internal/proto/datapb/data_service.pb.go b/internal/proto/datapb/data_service.pb.go
index 712fdfc410..432444baa3 100644
--- a/internal/proto/datapb/data_service.pb.go
+++ b/internal/proto/datapb/data_service.pb.go
@@ -1064,7 +1064,7 @@ type SegmentInfo struct {
 	SegmentID            int64                      `protobuf:"varint,1,opt,name=segmentID,proto3" json:"segmentID,omitempty"`
 	CollectionID         int64                      `protobuf:"varint,2,opt,name=collectionID,proto3" json:"collectionID,omitempty"`
 	PartitionID          int64                      `protobuf:"varint,3,opt,name=partitionID,proto3" json:"partitionID,omitempty"`
-	InsertChannels       []string                   `protobuf:"bytes,4,rep,name=insert_channels,json=insertChannels,proto3" json:"insert_channels,omitempty"`
+	InsertChannel        string                     `protobuf:"bytes,4,opt,name=insert_channel,json=insertChannel,proto3" json:"insert_channel,omitempty"`
 	OpenTime             uint64                     `protobuf:"varint,5,opt,name=open_time,json=openTime,proto3" json:"open_time,omitempty"`
 	SealedTime           uint64                     `protobuf:"varint,6,opt,name=sealed_time,json=sealedTime,proto3" json:"sealed_time,omitempty"`
 	FlushedTime          uint64                     `protobuf:"varint,7,opt,name=flushed_time,json=flushedTime,proto3" json:"flushed_time,omitempty"`
@@ -1124,11 +1124,11 @@ func (m *SegmentInfo) GetPartitionID() int64 {
 	return 0
 }
 
-func (m *SegmentInfo) GetInsertChannels() []string {
+func (m *SegmentInfo) GetInsertChannel() string {
 	if m != nil {
-		return m.InsertChannels
+		return m.InsertChannel
 	}
-	return nil
+	return ""
 }
 
 func (m *SegmentInfo) GetOpenTime() uint64 {
@@ -1732,109 +1732,109 @@ func init() {
 func init() { proto.RegisterFile("data_service.proto", fileDescriptor_3385cd32ad6cfe64) }
 
 var fileDescriptor_3385cd32ad6cfe64 = []byte{
-	// 1631 bytes of a gzipped FileDescriptorProto
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+	0x5f, 0x72, 0x16, 0xe8, 0x88, 0x79, 0xd8, 0x0e, 0x67, 0x5c, 0xc1, 0x2c, 0x76, 0xc2, 0x19, 0x69,
+	0xfc, 0xa0, 0x05, 0x57, 0xb9, 0x50, 0xe3, 0xe9, 0x34, 0xf8, 0x06, 0x00, 0xa1, 0x6d, 0x45, 0x25,
+	0xc2, 0xf5, 0xbc, 0x59, 0x20, 0xf4, 0xbe, 0x14, 0xa0, 0x0f, 0x60, 0x4e, 0xd8, 0xa7, 0xb5, 0x6c,
+	0x52, 0x3c, 0x44, 0x5f, 0xc4, 0x4f, 0x60, 0xaa, 0x0d, 0xc6, 0x27, 0x50, 0x6a, 0x34, 0x1e, 0x86,
+	0x7e, 0x8c, 0xa7, 0x4e, 0x4b, 0x48, 0xdd, 0x14, 0x67, 0x8c, 0x37, 0xdc, 0x3d, 0xfe, 0x64, 0x7c,
+	0xf5, 0x0d, 0xd7, 0x8b, 0xf6, 0x9b, 0xf2, 0xe1, 0x79, 0xae, 0x66, 0xc1, 0x4b, 0x58, 0x3a, 0x22,
+	0x17, 0xb7, 0x5c, 0xf1, 0x41, 0x23, 0xa0, 0x5f, 0x34, 0x1f, 0xcc, 0xb7, 0x5d, 0xd7, 0xc1, 0xd5,
+	0x19, 0xb4, 0x20, 0xde, 0xe2, 0x52, 0xc0, 0xb6, 0x8e, 0x08, 0x65, 0x55, 0x0d, 0x21, 0xa8, 0x28,
+	0xe1, 0xb6, 0xe7, 0x1e, 0x12, 0xa7, 0x5f, 0x9d, 0x45, 0xe7, 0xa0, 0xec, 0x6b, 0x12, 0x63, 0xa5,
+	0xaa, 0x47, 0x60, 0x2a, 0xd7, 0xd5, 0xcc, 0xc6, 0x3f, 0x00, 0xc5, 0x86, 0xc5, 0xac, 0x96, 0xfc,
+	0x54, 0x85, 0x2c, 0x28, 0x45, 0xbf, 0xf1, 0xa0, 0xeb, 0x09, 0xd9, 0x4f, 0xf8, 0x0c, 0x55, 0xbf,
+	0x91, 0x8a, 0x93, 0xc1, 0x32, 0x66, 0xd0, 0x36, 0x64, 0x85, 0x7d, 0x94, 0x34, 0x7c, 0xa2, 0x4f,
+	0xd1, 0xfa, 0x69, 0x81, 0x34, 0x66, 0x50, 0x07, 0xe6, 0x83, 0x57, 0xb5, 0xaa, 0xed, 0x6b, 0x09,
+	0x2a, 0x27, 0x3f, 0xa7, 0xd4, 0xaf, 0xa7, 0xc1, 0x02, 0x67, 0xdb, 0x50, 0x8a, 0x3c, 0x00, 0x69,
+	0xa2, 0x81, 0xc9, 0x37, 0x6c, 0xa2, 0x81, 0x84, 0x87, 0xa4, 0x31, 0x83, 0xfa, 0x50, 0xdd, 0xc6,
+	0x2c, 0x76, 0xe7, 0x47, 0x37, 0x52, 0xa6, 0xb2, 0xcf, 0xb0, 0xf5, 0xd5, 0x74, 0x60, 0x60, 0xc8,
+	0x83, 0xc5, 0x6d, 0xcc, 0x26, 0x6e, 0xd9, 0xe8, 0x56, 0x82, 0x8e, 0x13, 0xee, 0xfd, 0xf5, 0xb7,
+	0xa6, 0xc0, 0x46, 0x6d, 0x5a, 0x70, 0x2e, 0xb0, 0xa9, 0x2e, 0x46, 0xc9, 0xa7, 0x4b, 0xba, 0x54,
+	0xd7, 0xd3, 0x2f, 0xf3, 0xe2, 0x58, 0xe7, 0xb7, 0x31, 0x8b, 0x8f, 0x42, 0x42, 0x19, 0xe9, 0x52,
+	0x74, 0x33, 0xc1, 0x50, 0xf2, 0xe0, 0xae, 0xdf, 0x9a, 0x06, 0x1a, 0x1c, 0xcb, 0x85, 0xe5, 0x6d,
+	0xcc, 0x62, 0xe3, 0x44, 0x99, 0x4c, 0x4a, 0x48, 0xe2, 0x70, 0xac, 0xdf, 0x9c, 0x02, 0x19, 0x18,
+	0xdc, 0x07, 0x24, 0x0e, 0x69, 0x0f, 0x5d, 0x27, 0x2c, 0x93, 0x7a, 0x62, 0x7b, 0x6c, 0xd9, 0x43,
+	0xf6, 0x6c, 0xbc, 0x00, 0x83, 0xd8, 0x8d, 0xe9, 0x30, 0x66, 0xd0, 0x63, 0xa1, 0x9b, 0x5f, 0x29,
+	0x1f, 0x91, 0xee, 0x17, 0xfe, 0xf5, 0xf5, 0x34, 0xdd, 0x63, 0xaf, 0x48, 0xb5, 0x90, 0x59, 0x89,
+	0x38, 0xfd, 0x99, 0x28, 0xb8, 0x30, 0x38, 0x2f, 0x50, 0xf5, 0x3e, 0x2c, 0x85, 0x4d, 0xc3, 0x6f,
+	0x67, 0x2f, 0x50, 0x77, 0x17, 0xf2, 0x22, 0xd6, 0x23, 0x87, 0xa5, 0x54, 0x50, 0x74, 0x12, 0xa5,
+	0x54, 0x50, 0x6c, 0x60, 0x18, 0x33, 0x1b, 0x3f, 0xcf, 0x42, 0x9e, 0xd3, 0xae, 0xe0, 0xd8, 0x97,
+	0x99, 0xdd, 0x7d, 0x98, 0x8f, 0x3f, 0x17, 0x93, 0x6b, 0x34, 0xf1, 0x49, 0x99, 0xc6, 0xbf, 0x26,
+	0x94, 0xfd, 0xa7, 0xa1, 0x24, 0x47, 0xe3, 0x24, 0x42, 0x0f, 0x1f, 0x8f, 0x29, 0x3a, 0x37, 0x3f,
+	0xde, 0xff, 0xa8, 0x4f, 0xd8, 0xc1, 0xa8, 0xc3, 0xff, 0x59, 0x3f, 0x26, 0x83, 0x01, 0x39, 0x66,
+	0xb8, 0x7b, 0xb0, 0x2e, 0x77, 0xbd, 0xdd, 0x23, 0x94, 0x79, 0xa4, 0x33, 0x62, 0xb8, 0xb7, 0xee,
+	0x1f, 0x7b, 0x5d, 0xa8, 0x5a, 0xe7, 0xe6, 0x86, 0x9d, 0xce, 0x9c, 0x58, 0xdd, 0xfe, 0x2f, 0x00,
+	0x00, 0xff, 0xff, 0x12, 0x7a, 0x41, 0x93, 0x83, 0x19, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/internal/querynode/collection_replica.go b/internal/querynode/collection_replica.go
index d6ca26c9b5..901ce5db57 100644
--- a/internal/querynode/collection_replica.go
+++ b/internal/querynode/collection_replica.go
@@ -41,7 +41,7 @@ type collectionReplica interface {
 	getCollectionByID(collectionID UniqueID) (*Collection, error)
 	getCollectionByName(collectionName string) (*Collection, error)
 	hasCollection(collectionID UniqueID) bool
-	getVecFieldsByCollectionID(collectionID UniqueID) ([]int64, error)
+	getVecFieldsByCollectionID(collectionID UniqueID) (map[int64]string, error)
 
 	// partition
 	// Partition tags in different collections are not unique,
@@ -175,7 +175,7 @@ func (colReplica *collectionReplicaImpl) hasCollection(collectionID UniqueID) bo
 	return false
 }
 
-func (colReplica *collectionReplicaImpl) getVecFieldsByCollectionID(collectionID UniqueID) ([]int64, error) {
+func (colReplica *collectionReplicaImpl) getVecFieldsByCollectionID(collectionID UniqueID) (map[int64]string, error) {
 	colReplica.mu.RLock()
 	defer colReplica.mu.RUnlock()
 
@@ -184,10 +184,10 @@ func (colReplica *collectionReplicaImpl) getVecFieldsByCollectionID(collectionID
 		return nil, err
 	}
 
-	vecFields := make([]int64, 0)
+	vecFields := make(map[int64]string)
 	for _, field := range col.Schema().Fields {
 		if field.DataType == schemapb.DataType_VECTOR_BINARY || field.DataType == schemapb.DataType_VECTOR_FLOAT {
-			vecFields = append(vecFields, field.FieldID)
+			vecFields[field.FieldID] = field.Name
 		}
 	}
 
diff --git a/internal/querynode/index.go b/internal/querynode/index.go
index e0539990a7..8c8f84b17e 100644
--- a/internal/querynode/index.go
+++ b/internal/querynode/index.go
@@ -29,7 +29,7 @@ func (s *Segment) buildIndex(collection *Collection) commonpb.Status {
 	return commonpb.Status{ErrorCode: commonpb.ErrorCode_SUCCESS}
 }
 
-func (s *Segment) dropIndex(fieldID int64) commonpb.Status {
+func (s *Segment) dropIndex(fieldName string) commonpb.Status {
 	// WARN: Not support yet
 
 	return commonpb.Status{ErrorCode: commonpb.ErrorCode_SUCCESS}
diff --git a/internal/querynode/load_index_info.go b/internal/querynode/load_index_info.go
index 37032ffe18..d56cca4f21 100644
--- a/internal/querynode/load_index_info.go
+++ b/internal/querynode/load_index_info.go
@@ -51,9 +51,10 @@ func (li *LoadIndexInfo) appendIndexParam(indexKey string, indexValue string) er
 	return nil
 }
 
-func (li *LoadIndexInfo) appendFieldInfo(fieldID int64) error {
+func (li *LoadIndexInfo) appendFieldInfo(fieldName string, fieldID int64) error {
+	cFieldName := C.CString(fieldName)
 	cFieldID := C.long(fieldID)
-	status := C.AppendFieldInfo(li.cLoadIndexInfo, cFieldID)
+	status := C.AppendFieldInfo(li.cLoadIndexInfo, cFieldName, cFieldID)
 	errorCode := status.error_code
 
 	if errorCode != 0 {
diff --git a/internal/querynode/load_index_info_test.go b/internal/querynode/load_index_info_test.go
index 9cfd4f14a9..95261c7002 100644
--- a/internal/querynode/load_index_info_test.go
+++ b/internal/querynode/load_index_info_test.go
@@ -1,64 +1,12 @@
 package querynode
 
 import (
-	"strconv"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/zilliztech/milvus-distributed/internal/indexnode"
 	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
 )
 
-func genIndexBinarySet() ([][]byte, error) {
-	const (
-		msgLength = 1000
-		DIM       = 16
-	)
-
-	indexParams := make(map[string]string)
-	indexParams["index_type"] = "IVF_PQ"
-	indexParams["index_mode"] = "cpu"
-	indexParams["dim"] = "16"
-	indexParams["k"] = "10"
-	indexParams["nlist"] = "100"
-	indexParams["nprobe"] = "10"
-	indexParams["m"] = "4"
-	indexParams["nbits"] = "8"
-	indexParams["metric_type"] = "L2"
-	indexParams["SLICE_SIZE"] = "4"
-
-	typeParams := make(map[string]string)
-	typeParams["dim"] = strconv.Itoa(DIM)
-	var indexRowData []float32
-	for n := 0; n < msgLength; n++ {
-		for i := 0; i < DIM; i++ {
-			indexRowData = append(indexRowData, float32(n*i))
-		}
-	}
-
-	index, err := indexnode.NewCIndex(typeParams, indexParams)
-	if err != nil {
-		return nil, err
-	}
-
-	err = index.BuildFloatVecIndexWithoutIds(indexRowData)
-	if err != nil {
-		return nil, err
-	}
-
-	// save index to minio
-	binarySet, err := index.Serialize()
-	if err != nil {
-		return nil, err
-	}
-
-	bytesSet := make([][]byte, 0)
-	for i := range binarySet {
-		bytesSet = append(bytesSet, binarySet[i].Value)
-	}
-	return bytesSet, nil
-}
-
 func TestLoadIndexInfo(t *testing.T) {
 	indexParams := make([]*commonpb.KeyValuePair, 0)
 	indexParams = append(indexParams, &commonpb.KeyValuePair{
@@ -70,21 +18,19 @@ func TestLoadIndexInfo(t *testing.T) {
 		Value: "cpu",
 	})
 
-	indexBytes, err := genIndexBinarySet()
-	assert.NoError(t, err)
+	indexBytes := make([][]byte, 0)
+	indexValue := make([]byte, 10)
+	indexBytes = append(indexBytes, indexValue)
 	indexPaths := make([]string, 0)
-	indexPaths = append(indexPaths, "IVF")
+	indexPaths = append(indexPaths, "index-0")
 
 	loadIndexInfo, err := newLoadIndexInfo()
 	assert.Nil(t, err)
 	for _, indexParam := range indexParams {
-		err = loadIndexInfo.appendIndexParam(indexParam.Key, indexParam.Value)
-		assert.NoError(t, err)
+		loadIndexInfo.appendIndexParam(indexParam.Key, indexParam.Value)
 	}
-	err = loadIndexInfo.appendFieldInfo(0)
-	assert.NoError(t, err)
-	err = loadIndexInfo.appendIndex(indexBytes, indexPaths)
-	assert.NoError(t, err)
+	loadIndexInfo.appendFieldInfo("field0", 0)
+	loadIndexInfo.appendIndex(indexBytes, indexPaths)
 
 	deleteLoadIndexInfo(loadIndexInfo)
 }
diff --git a/internal/querynode/load_service.go b/internal/querynode/load_service.go
index 1ce28cb54a..bec0170ef8 100644
--- a/internal/querynode/load_service.go
+++ b/internal/querynode/load_service.go
@@ -47,6 +47,7 @@ type loadService struct {
 type loadIndex struct {
 	segmentID  UniqueID
 	fieldID    int64
+	fieldName  string
 	indexPaths []string
 }
 
@@ -261,7 +262,7 @@ func (s *loadService) updateSegmentIndex(indexParams indexParam, bytesIndex [][]
 	if err != nil {
 		return err
 	}
-	err = loadIndexInfo.appendFieldInfo(l.fieldID)
+	err = loadIndexInfo.appendFieldInfo(l.fieldName, l.fieldID)
 	if err != nil {
 		return err
 	}
@@ -421,9 +422,10 @@ func (s *loadService) loadIndexImmediate(segment *Segment, indexPaths []string)
 	if err != nil {
 		return err
 	}
-	for _, id := range vecFieldIDs {
+	for id, name := range vecFieldIDs {
 		l := &loadIndex{
 			segmentID:  segment.ID(),
+			fieldName:  name,
 			fieldID:    id,
 			indexPaths: indexPaths,
 		}
@@ -447,9 +449,10 @@ func (s *loadService) loadIndexDelayed(collectionID, segmentID UniqueID, indexPa
 	if err != nil {
 		return err
 	}
-	for _, id := range vecFieldIDs {
+	for id, name := range vecFieldIDs {
 		l := &loadIndex{
 			segmentID:  segmentID,
+			fieldName:  name,
 			fieldID:    id,
 			indexPaths: indexPaths,
 		}
@@ -484,18 +487,10 @@ func (s *loadService) getInsertBinlogPaths(segmentID UniqueID) ([]*internalpb2.S
 	return pathResponse.Paths, pathResponse.FieldIDs, nil
 }
 
-func (s *loadService) filterOutVectorFields(fieldIDs []int64, vectorFields []int64) []int64 {
-	containsFunc := func(s []int64, e int64) bool {
-		for _, a := range s {
-			if a == e {
-				return true
-			}
-		}
-		return false
-	}
+func (s *loadService) filterOutVectorFields(fieldIDs []int64, vectorFields map[int64]string) []int64 {
 	targetFields := make([]int64, 0)
 	for _, id := range fieldIDs {
-		if !containsFunc(vectorFields, id) {
+		if _, ok := vectorFields[id]; !ok {
 			targetFields = append(targetFields, id)
 		}
 	}