Implement segment manager and loadSegment

Signed-off-by: bigsheeper <yihao.dai@zilliz.com>

internal/core/src/common/LoadIndex.h

@@ -13,7 +13,7 @@
 #include <string>
 #include <map>
 
-#include "knowhere/index/vector_index/VecIndex.h"
+#include "../index/knowhere/knowhere/index/vector_index/VecIndex.h"
 
 struct LoadIndexInfo {
     std::string field_name;
@@ -21,9 +21,3 @@ struct LoadIndexInfo {
     std::map<std::string, std::string> index_params;
     milvus::knowhere::VecIndexPtr index;
 };
-
-struct LoadFieldDataInfo {
-    int64_t field_id;
-    void* blob;
-    int64_t row_count;
-};

internal/core/src/segcore/SegmentGrowing.h

@@ -18,7 +18,7 @@
 
 #include "query/deprecated/GeneralQuery.h"
 #include "query/Plan.h"
-#include "common/LoadInfo.h"
+#include "common/LoadIndex.h"
 #include "segcore/SegmentInterface.h"
 
 namespace milvus {

internal/core/src/segcore/SegmentSealed.h

@@ -10,20 +10,17 @@
 // or implied. See the License for the specific language governing permissions and limitations under the License
 
 #include "SegmentInterface.h"
-#include "common/LoadInfo.h"
 
-namespace milvus::segcore {
+// class SegmentSealed : public SegmentInternalInterface {
-
+//  public:
-class SegmentSealed {
+//     const Schema& get_schema() = 0;
- public:
+//     int64_t get_num_chunk() = 0;
-    virtual const Schema&
+//
-    get_schema() = 0;
+//     explicit SegmentSealed(SchemaPtr schema);
-    virtual int64_t
+//     void set_size();
-    get_row_count() = 0;
+//     void load_data(FieldId field_id, void* blob, int64_t blob_size);
-    virtual void
+//
-    LoadIndex(const LoadIndexInfo& info) = 0;
+//
-    virtual void
+//  private:
-    LoadFieldData(const LoadFieldDataInfo& info) = 0;
+//     SchemaPtr schema_;
-};
+// }
-
-}  // namespace milvus::segcore

internal/core/src/segcore/load_index_c.cpp

@@ -12,7 +12,7 @@
 #include "index/knowhere/knowhere/common/BinarySet.h"
 #include "index/knowhere/knowhere/index/vector_index/VecIndexFactory.h"
 #include "segcore/load_index_c.h"
-#include "common/LoadInfo.h"
+#include "common/LoadIndex.h"
 #include "utils/EasyAssert.h"
 
 CStatus

internal/core/src/segcore/segment_c.cpp

@@ -19,7 +19,7 @@
 #include <knowhere/index/vector_index/VecIndexFactory.h>
 #include <cstdint>
 #include <boost/concept_check.hpp>
-#include "common/LoadInfo.h"
+#include "common/LoadIndex.h"
 
 CSegmentBase
 NewSegment(CCollection collection, uint64_t segment_id) {

internal/core/unittest/CMakeLists.txt

@@ -18,7 +18,6 @@ set(MILVUS_TEST_FILES
         test_reduce.cpp
         test_interface.cpp
         test_span.cpp
-        test_load.cpp
         )
 add_executable(all_tests
         ${MILVUS_TEST_FILES}

internal/core/unittest/test_c_api.cpp

@@ -23,7 +23,7 @@
 #include <index/knowhere/knowhere/index/vector_index/adapter/VectorAdapter.h>
 #include <index/knowhere/knowhere/index/vector_index/VecIndexFactory.h>
 #include <index/knowhere/knowhere/index/vector_index/IndexIVFPQ.h>
-#include <common/LoadInfo.h>
+#include <common/LoadIndex.h>
 #include <utils/Types.h>
 #include <segcore/Collection.h>
 #include "test_utils/DataGen.h"

internal/core/unittest/test_load.cpp

@@ -1,6 +0,0 @@
-#include <gtest/gtest.h>
-#include "segcore/SegmentSealed.h"
-
-TEST(Load, Naive) {
-
-}

internal/distributed/querynode/client.go

@@ -3,10 +3,60 @@ package querynode
 import (
 	"context"
 
+	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
+	"github.com/zilliztech/milvus-distributed/internal/proto/internalpb2"
 	"github.com/zilliztech/milvus-distributed/internal/proto/querypb"
 )
 
 type Client struct {
-	ctx context.Context
+	ctx        context.Context
-	querypb.QueryNodeClient
+	grpcClient querypb.QueryNodeClient
+}
+
+func (c *Client) Init() {
+	panic("implement me")
+}
+
+func (c *Client) Start() {
+	panic("implement me")
+}
+
+func (c *Client) Stop() {
+	panic("implement me")
+}
+
+func (c *Client) GetServiceStates() (internalpb2.ServiceStates, error) {
+	panic("implement me")
+}
+
+func (c *Client) GetTimeTickChannel() (string, error) {
+	panic("implement me")
+}
+
+func (c *Client) GetStatisticsChannel() (string, error) {
+	panic("implement me")
+}
+
+func (c *Client) AddQueryChannel(in *querypb.AddQueryChannelsRequest) (*commonpb.Status, error) {
+	return c.grpcClient.AddQueryChannel(context.TODO(), in)
+}
+
+func (c *Client) RemoveQueryChannel(in *querypb.RemoveQueryChannelsRequest) (*commonpb.Status, error) {
+	return c.grpcClient.RemoveQueryChannel(context.TODO(), in)
+}
+
+func (c *Client) WatchDmChannels(in *querypb.WatchDmChannelsRequest) (*commonpb.Status, error) {
+	return c.grpcClient.WatchDmChannels(context.TODO(), in)
+}
+
+func (c *Client) LoadSegments(in *querypb.LoadSegmentRequest) (*commonpb.Status, error) {
+	return c.grpcClient.LoadSegments(context.TODO(), in)
+}
+
+func (c *Client) ReleaseSegments(in *querypb.ReleaseSegmentRequest) (*commonpb.Status, error) {
+	return c.grpcClient.ReleaseSegments(context.TODO(), in)
+}
+
+func (c *Client) GetPartitionState(in *querypb.PartitionStatesRequest) (*querypb.PartitionStatesResponse, error) {
+	return c.grpcClient.GetPartitionState(context.TODO(), in)
 }

internal/distributed/querynode/service.go

@@ -44,25 +44,31 @@ func (s *Server) Start() {
 }
 
 func (s *Server) AddQueryChannel(ctx context.Context, in *querypb.AddQueryChannelsRequest) (*commonpb.Status, error) {
-	return s.node.AddQueryChannel(ctx, in)
+	// ignore ctx
+	return s.node.AddQueryChannel(in)
 }
 
 func (s *Server) RemoveQueryChannel(ctx context.Context, in *querypb.RemoveQueryChannelsRequest) (*commonpb.Status, error) {
-	return s.node.RemoveQueryChannel(ctx, in)
+	// ignore ctx
+	return s.node.RemoveQueryChannel(in)
 }
 
 func (s *Server) WatchDmChannels(ctx context.Context, in *querypb.WatchDmChannelsRequest) (*commonpb.Status, error) {
-	return s.node.WatchDmChannels(ctx, in)
+	// ignore ctx
+	return s.node.WatchDmChannels(in)
 }
 
 func (s *Server) LoadSegments(ctx context.Context, in *querypb.LoadSegmentRequest) (*commonpb.Status, error) {
-	return s.node.LoadSegments(ctx, in)
+	// ignore ctx
+	return s.node.LoadSegments(in)
 }
 
 func (s *Server) ReleaseSegments(ctx context.Context, in *querypb.ReleaseSegmentRequest) (*commonpb.Status, error) {
-	return s.node.ReleaseSegments(ctx, in)
+	// ignore ctx
+	return s.node.ReleaseSegments(in)
 }
 
 func (s *Server) GetPartitionState(ctx context.Context, in *querypb.PartitionStatesRequest) (*querypb.PartitionStatesResponse, error) {
-	return s.node.GetPartitionState(ctx, in)
+	// ignore ctx
+	return s.node.GetPartitionState(in)
 }

internal/querynode/api.go

@@ -1,7 +1,6 @@
 package querynode
 
 import (
-	"context"
 	"errors"
 
 	"github.com/zilliztech/milvus-distributed/internal/msgstream"
@@ -9,187 +8,168 @@ import (
 	queryPb "github.com/zilliztech/milvus-distributed/internal/proto/querypb"
 )
 
-func (node *QueryNode) AddQueryChannel(ctx context.Context, in *queryPb.AddQueryChannelsRequest) (*commonpb.Status, error) {
+func (node *QueryNode) AddQueryChannel(in *queryPb.AddQueryChannelsRequest) (*commonpb.Status, error) {
-	select {
+	if node.searchService == nil || node.searchService.searchMsgStream == nil {
-	case <-ctx.Done():
+		errMsg := "null search service or null search message stream"
-		errMsg := "context exceeded"
 		status := &commonpb.Status{
 			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
 			Reason:    errMsg,
 		}
 
 		return status, errors.New(errMsg)
-	default:
-		if node.searchService == nil || node.searchService.searchMsgStream == nil {
-			errMsg := "null search service or null search message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		searchStream, ok := node.searchService.searchMsgStream.(*msgstream.PulsarMsgStream)
-		if !ok {
-			errMsg := "type assertion failed for search message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		resultStream, ok := node.searchService.searchResultMsgStream.(*msgstream.PulsarMsgStream)
-		if !ok {
-			errMsg := "type assertion failed for search result message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		// add request channel
-		pulsarBufSize := Params.SearchPulsarBufSize
-		consumeChannels := []string{in.RequestChannelID}
-		consumeSubName := Params.MsgChannelSubName
-		unmarshalDispatcher := msgstream.NewUnmarshalDispatcher()
-		searchStream.CreatePulsarConsumers(consumeChannels, consumeSubName, unmarshalDispatcher, pulsarBufSize)
-
-		// add result channel
-		producerChannels := []string{in.ResultChannelID}
-		resultStream.CreatePulsarProducers(producerChannels)
-
-		status := &commonpb.Status{
-			ErrorCode: commonpb.ErrorCode_SUCCESS,
-		}
-		return status, nil
 	}
-}
 
-func (node *QueryNode) RemoveQueryChannel(ctx context.Context, in *queryPb.RemoveQueryChannelsRequest) (*commonpb.Status, error) {
+	searchStream, ok := node.searchService.searchMsgStream.(*msgstream.PulsarMsgStream)
-	select {
+	if !ok {
-	case <-ctx.Done():
+		errMsg := "type assertion failed for search message stream"
-		errMsg := "context exceeded"
 		status := &commonpb.Status{
 			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
 			Reason:    errMsg,
 		}
 
 		return status, errors.New(errMsg)
-	default:
-		if node.searchService == nil || node.searchService.searchMsgStream == nil {
-			errMsg := "null search service or null search result message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		searchStream, ok := node.searchService.searchMsgStream.(*msgstream.PulsarMsgStream)
-		if !ok {
-			errMsg := "type assertion failed for search message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		resultStream, ok := node.searchService.searchResultMsgStream.(*msgstream.PulsarMsgStream)
-		if !ok {
-			errMsg := "type assertion failed for search result message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		// remove request channel
-		pulsarBufSize := Params.SearchPulsarBufSize
-		consumeChannels := []string{in.RequestChannelID}
-		consumeSubName := Params.MsgChannelSubName
-		unmarshalDispatcher := msgstream.NewUnmarshalDispatcher()
-		// TODO: searchStream.RemovePulsarConsumers(producerChannels)
-		searchStream.CreatePulsarConsumers(consumeChannels, consumeSubName, unmarshalDispatcher, pulsarBufSize)
-
-		// remove result channel
-		producerChannels := []string{in.ResultChannelID}
-		// TODO: resultStream.RemovePulsarProducer(producerChannels)
-		resultStream.CreatePulsarProducers(producerChannels)
-
-		status := &commonpb.Status{
-			ErrorCode: commonpb.ErrorCode_SUCCESS,
-		}
-		return status, nil
 	}
-}
 
-func (node *QueryNode) WatchDmChannels(ctx context.Context, in *queryPb.WatchDmChannelsRequest) (*commonpb.Status, error) {
+	resultStream, ok := node.searchService.searchResultMsgStream.(*msgstream.PulsarMsgStream)
-	select {
+	if !ok {
-	case <-ctx.Done():
+		errMsg := "type assertion failed for search result message stream"
-		errMsg := "context exceeded"
 		status := &commonpb.Status{
 			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
 			Reason:    errMsg,
 		}
 
 		return status, errors.New(errMsg)
-	default:
-		if node.dataSyncService == nil || node.dataSyncService.dmStream == nil {
-			errMsg := "null data sync service or null data manipulation stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		fgDMMsgStream, ok := node.dataSyncService.dmStream.(*msgstream.PulsarMsgStream)
-		if !ok {
-			errMsg := "type assertion failed for dm message stream"
-			status := &commonpb.Status{
-				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
-				Reason:    errMsg,
-			}
-
-			return status, errors.New(errMsg)
-		}
-
-		// add request channel
-		pulsarBufSize := Params.SearchPulsarBufSize
-		consumeChannels := in.ChannelIDs
-		consumeSubName := Params.MsgChannelSubName
-		unmarshalDispatcher := msgstream.NewUnmarshalDispatcher()
-		fgDMMsgStream.CreatePulsarConsumers(consumeChannels, consumeSubName, unmarshalDispatcher, pulsarBufSize)
-
-		status := &commonpb.Status{
-			ErrorCode: commonpb.ErrorCode_SUCCESS,
-		}
-		return status, nil
 	}
+
+	// add request channel
+	pulsarBufSize := Params.SearchPulsarBufSize
+	consumeChannels := []string{in.RequestChannelID}
+	consumeSubName := Params.MsgChannelSubName
+	unmarshalDispatcher := msgstream.NewUnmarshalDispatcher()
+	searchStream.CreatePulsarConsumers(consumeChannels, consumeSubName, unmarshalDispatcher, pulsarBufSize)
+
+	// add result channel
+	producerChannels := []string{in.ResultChannelID}
+	resultStream.CreatePulsarProducers(producerChannels)
+
+	status := &commonpb.Status{
+		ErrorCode: commonpb.ErrorCode_SUCCESS,
+	}
+	return status, nil
 }
 
-func (node *QueryNode) LoadSegments(ctx context.Context, in *queryPb.LoadSegmentRequest) (*commonpb.Status, error) {
+func (node *QueryNode) RemoveQueryChannel(in *queryPb.RemoveQueryChannelsRequest) (*commonpb.Status, error) {
+	if node.searchService == nil || node.searchService.searchMsgStream == nil {
+		errMsg := "null search service or null search result message stream"
+		status := &commonpb.Status{
+			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
+			Reason:    errMsg,
+		}
+
+		return status, errors.New(errMsg)
+	}
+
+	searchStream, ok := node.searchService.searchMsgStream.(*msgstream.PulsarMsgStream)
+	if !ok {
+		errMsg := "type assertion failed for search message stream"
+		status := &commonpb.Status{
+			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
+			Reason:    errMsg,
+		}
+
+		return status, errors.New(errMsg)
+	}
+
+	resultStream, ok := node.searchService.searchResultMsgStream.(*msgstream.PulsarMsgStream)
+	if !ok {
+		errMsg := "type assertion failed for search result message stream"
+		status := &commonpb.Status{
+			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
+			Reason:    errMsg,
+		}
+
+		return status, errors.New(errMsg)
+	}
+
+	// remove request channel
+	pulsarBufSize := Params.SearchPulsarBufSize
+	consumeChannels := []string{in.RequestChannelID}
+	consumeSubName := Params.MsgChannelSubName
+	unmarshalDispatcher := msgstream.NewUnmarshalDispatcher()
+	// TODO: searchStream.RemovePulsarConsumers(producerChannels)
+	searchStream.CreatePulsarConsumers(consumeChannels, consumeSubName, unmarshalDispatcher, pulsarBufSize)
+
+	// remove result channel
+	producerChannels := []string{in.ResultChannelID}
+	// TODO: resultStream.RemovePulsarProducer(producerChannels)
+	resultStream.CreatePulsarProducers(producerChannels)
+
+	status := &commonpb.Status{
+		ErrorCode: commonpb.ErrorCode_SUCCESS,
+	}
+	return status, nil
+}
+
+func (node *QueryNode) WatchDmChannels(in *queryPb.WatchDmChannelsRequest) (*commonpb.Status, error) {
+	if node.dataSyncService == nil || node.dataSyncService.dmStream == nil {
+		errMsg := "null data sync service or null data manipulation stream"
+		status := &commonpb.Status{
+			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
+			Reason:    errMsg,
+		}
+
+		return status, errors.New(errMsg)
+	}
+
+	fgDMMsgStream, ok := node.dataSyncService.dmStream.(*msgstream.PulsarMsgStream)
+	if !ok {
+		errMsg := "type assertion failed for dm message stream"
+		status := &commonpb.Status{
+			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
+			Reason:    errMsg,
+		}
+
+		return status, errors.New(errMsg)
+	}
+
+	// add request channel
+	pulsarBufSize := Params.SearchPulsarBufSize
+	consumeChannels := in.ChannelIDs
+	consumeSubName := Params.MsgChannelSubName
+	unmarshalDispatcher := msgstream.NewUnmarshalDispatcher()
+	fgDMMsgStream.CreatePulsarConsumers(consumeChannels, consumeSubName, unmarshalDispatcher, pulsarBufSize)
+
+	status := &commonpb.Status{
+		ErrorCode: commonpb.ErrorCode_SUCCESS,
+	}
+	return status, nil
+}
+
+func (node *QueryNode) LoadSegments(in *queryPb.LoadSegmentRequest) (*commonpb.Status, error) {
+	// TODO: support db
+	for _, segmentID := range in.SegmentIDs {
+		hasBeenBuiltIndex := segmentID > 0 // TODO: ???
+		indexID := UniqueID(0)             // TODO: ???
+		err := node.segManager.loadSegment(segmentID, hasBeenBuiltIndex, indexID, in.FieldIDs)
+		if err != nil {
+			// TODO: return or continue
+			status := &commonpb.Status{
+				ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
+				Reason:    err.Error(),
+			}
+			return status, err
+		}
+	}
+
+	return nil, nil
+}
+
+func (node *QueryNode) ReleaseSegments(in *queryPb.ReleaseSegmentRequest) (*commonpb.Status, error) {
 	// TODO: implement
 	return nil, nil
 }
 
-func (node *QueryNode) ReleaseSegments(ctx context.Context, in *queryPb.ReleaseSegmentRequest) (*commonpb.Status, error) {
+func (node *QueryNode) GetPartitionState(in *queryPb.PartitionStatesRequest) (*queryPb.PartitionStatesResponse, error) {
-	// TODO: implement
-	return nil, nil
-}
-
-func (node *QueryNode) GetPartitionState(ctx context.Context, in *queryPb.PartitionStatesRequest) (*queryPb.PartitionStatesResponse, error) {
 	// TODO: implement
 	return nil, nil
 }

internal/querynode/query_node.go

@@ -29,12 +29,12 @@ type Node interface {
 	Start() error
 	Close()
 
-	AddQueryChannel(ctx context.Context, in *queryPb.AddQueryChannelsRequest) (*commonpb.Status, error)
+	AddQueryChannel(in *queryPb.AddQueryChannelsRequest) (*commonpb.Status, error)
-	RemoveQueryChannel(ctx context.Context, in *queryPb.RemoveQueryChannelsRequest) (*commonpb.Status, error)
+	RemoveQueryChannel(in *queryPb.RemoveQueryChannelsRequest) (*commonpb.Status, error)
-	WatchDmChannels(ctx context.Context, in *queryPb.WatchDmChannelsRequest) (*commonpb.Status, error)
+	WatchDmChannels(in *queryPb.WatchDmChannelsRequest) (*commonpb.Status, error)
-	LoadSegments(ctx context.Context, in *queryPb.LoadSegmentRequest) (*commonpb.Status, error)
+	LoadSegments(in *queryPb.LoadSegmentRequest) (*commonpb.Status, error)
-	ReleaseSegments(ctx context.Context, in *queryPb.ReleaseSegmentRequest) (*commonpb.Status, error)
+	ReleaseSegments(in *queryPb.ReleaseSegmentRequest) (*commonpb.Status, error)
-	GetPartitionState(ctx context.Context, in *queryPb.PartitionStatesRequest) (*queryPb.PartitionStatesResponse, error)
+	GetPartitionState(in *queryPb.PartitionStatesRequest) (*queryPb.PartitionStatesResponse, error)
 }
 
 type QueryNode struct {
@@ -53,6 +53,8 @@ type QueryNode struct {
 	loadIndexService *loadIndexService
 	statsService     *statsService
 
+	segManager *segmentManager
+
 	//opentracing
 	tracer opentracing.Tracer
 	closer io.Closer

internal/querynode/segment_manager.go

@@ -0,0 +1,126 @@
+package querynode
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/zilliztech/milvus-distributed/internal/kv"
+	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
+	"github.com/zilliztech/milvus-distributed/internal/proto/datapb"
+	"github.com/zilliztech/milvus-distributed/internal/proto/indexpb"
+	queryPb "github.com/zilliztech/milvus-distributed/internal/proto/querypb"
+	"github.com/zilliztech/milvus-distributed/internal/querynode/client"
+	"github.com/zilliztech/milvus-distributed/internal/storage"
+)
+
+type segmentManager struct {
+	replica collectionReplica
+
+	// TODO: replace by client instead of grpc client
+	dataClient         datapb.DataServiceClient
+	indexBuilderClient indexpb.IndexServiceClient
+
+	queryNodeClient *client.Client
+	kv              kv.Base // minio kv
+	iCodec          storage.InsertCodec
+}
+
+func (s *segmentManager) loadSegment(segmentID UniqueID, hasBeenBuiltIndex bool, indexID UniqueID, vecFieldIDs []int64) error {
+	// 1. load segment
+	req := &datapb.InsertBinlogPathRequest{
+		SegmentID: segmentID,
+	}
+
+	pathResponse, err := s.dataClient.GetInsertBinlogPaths(context.TODO(), req)
+	if err != nil {
+		return err
+	}
+
+	if len(pathResponse.FieldIDs) != len(pathResponse.Paths) {
+		return errors.New("illegal InsertBinlogPathsResponse")
+	}
+
+	for fieldID, i := range pathResponse.FieldIDs {
+		paths := pathResponse.Paths[i].Values
+		blobs := make([]*storage.Blob, 0)
+		for _, path := range paths {
+			binLog, err := s.kv.Load(path)
+			if err != nil {
+				// TODO: return or continue?
+				return err
+			}
+			blobs = append(blobs, &storage.Blob{
+				Key:   "", // TODO: key???
+				Value: []byte(binLog),
+			})
+		}
+		_, _, insertData, err := s.iCodec.Deserialize(blobs)
+		if err != nil {
+			// TODO: return or continue
+			return err
+		}
+		if len(insertData.Data) != 1 {
+			return errors.New("we expect only one field in deserialized insert data")
+		}
+
+		for _, value := range insertData.Data {
+			switch fieldData := value.(type) {
+			case storage.BoolFieldData:
+				numRows := fieldData.NumRows
+				data := fieldData.Data
+				fmt.Println(numRows, data, fieldID)
+				// TODO: s.replica.addSegment()
+			case storage.Int8FieldData:
+				// TODO: s.replica.addSegment()
+			case storage.Int16FieldData:
+				// TODO: s.replica.addSegment()
+			case storage.Int32FieldData:
+				// TODO: s.replica.addSegment()
+			case storage.Int64FieldData:
+				// TODO: s.replica.addSegment()
+			case storage.FloatFieldData:
+				// TODO: s.replica.addSegment()
+			case storage.DoubleFieldData:
+				// TODO: s.replica.addSegment()
+			default:
+				// TODO: what if the index has not been built ?
+				// does the info from hasBeenBuiltIndex is synced with the dataService?
+				return errors.New("unsupported field data type")
+			}
+		}
+	}
+
+	// 2. load index
+	// does the info from hasBeenBuiltIndex is synced with the dataService?
+	if !hasBeenBuiltIndex {
+		req := &indexpb.IndexFilePathRequest{
+			IndexID: indexID,
+		}
+		pathResponse, err := s.indexBuilderClient.GetIndexFilePaths(context.TODO(), req)
+		if err != nil || pathResponse.Status.ErrorCode != commonpb.ErrorCode_SUCCESS {
+			return err
+		}
+		targetSegment, err := s.replica.getSegmentByID(segmentID)
+		if err != nil {
+			return err
+		}
+		for _, vecFieldID := range vecFieldIDs {
+			targetIndexParam, ok := targetSegment.indexParam[vecFieldID]
+			if !ok {
+				return errors.New(fmt.Sprint("cannot found index params in segment ", segmentID, " with field = ", vecFieldID))
+			}
+			err := s.queryNodeClient.LoadIndex(pathResponse.IndexFilePaths, segmentID, vecFieldID, "", targetIndexParam)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (s *segmentManager) releaseSegment(in *queryPb.ReleaseSegmentRequest) error {
+	// TODO: implement
+	// TODO: release specific field, we need segCore supply relevant interface
+	return nil
+}