Fix compaction target segment rowNum is always 0 (#20937)

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>

internal/datanode/binlog_io.go

@@ -285,7 +285,7 @@ func (b *binlogIO) genInsertBlobs(data *InsertData, partID, segID UniqueID, meta
 		kvs[key] = value
 		inpaths[fID] = &datapb.FieldBinlog{
 			FieldID: fID,
-			Binlogs: []*datapb.Binlog{{LogSize: int64(fileLen), LogPath: key}},
+			Binlogs: []*datapb.Binlog{{LogSize: int64(fileLen), LogPath: key, EntriesNum: blob.RowNum}},
 		}
 	}
 
@@ -302,7 +302,7 @@ func (b *binlogIO) genInsertBlobs(data *InsertData, partID, segID UniqueID, meta
 		kvs[key] = value
 		statspaths[fID] = &datapb.FieldBinlog{
 			FieldID: fID,
-			Binlogs: []*datapb.Binlog{{LogSize: int64(fileLen), LogPath: key}},
+			Binlogs: []*datapb.Binlog{{LogSize: int64(fileLen), LogPath: key, EntriesNum: blob.RowNum}},
 		}
 	}
 

internal/storage/data_codec.go

@@ -64,9 +64,10 @@ const InvalidUniqueID = UniqueID(-1)
 
 // Blob is a pack of key&value
 type Blob struct {
-	Key   string
-	Value []byte
-	Size  int64
+	Key    string
+	Value  []byte
+	Size   int64
+	RowNum int64
 }
 
 // BlobList implements sort.Interface for a list of Blob
@@ -277,6 +278,7 @@ func (insertCodec *InsertCodec) Serialize(partitionID UniqueID, segmentID Unique
 	if timeFieldData.RowNum() <= 0 {
 		return nil, nil, fmt.Errorf("there's no data in InsertData")
 	}
+	rowNum := int64(timeFieldData.RowNum())
 
 	ts := timeFieldData.(*Int64FieldData).Data
 	startTs := ts[0]
@@ -420,8 +422,9 @@ func (insertCodec *InsertCodec) Serialize(partitionID UniqueID, segmentID Unique
 		}
 		blobKey := fmt.Sprintf("%d", field.FieldID)
 		blobs = append(blobs, &Blob{
-			Key:   blobKey,
-			Value: buffer,
+			Key:    blobKey,
+			Value:  buffer,
+			RowNum: rowNum,
 		})
 		eventWriter.Close()
 		writer.Close()
@@ -435,8 +438,9 @@ func (insertCodec *InsertCodec) Serialize(partitionID UniqueID, segmentID Unique
 			}
 			statsBuffer := statsWriter.GetBuffer()
 			statsBlobs = append(statsBlobs, &Blob{
-				Key:   blobKey,
-				Value: statsBuffer,
+				Key:    blobKey,
+				Value:  statsBuffer,
+				RowNum: rowNum,
 			})
 		}
 	}

internal/storage/index_data_codec_test.go

@@ -118,19 +118,19 @@ func TestIndexCodec(t *testing.T) {
 	indexCodec := NewIndexCodec()
 	blobs := []*Blob{
 		{
-			"12345",
-			[]byte{1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7},
-			14,
+			Key:   "12345",
+			Value: []byte{1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7},
+			Size:  14,
 		},
 		{
-			"6666",
-			[]byte{6, 6, 6, 6, 6, 1, 2, 3, 4, 5, 6, 7},
-			12,
+			Key:   "6666",
+			Value: []byte{6, 6, 6, 6, 6, 1, 2, 3, 4, 5, 6, 7},
+			Size:  12,
 		},
 		{
-			"8885",
-			[]byte{8, 8, 8, 8, 8, 8, 8, 8, 2, 3, 4, 5, 6, 7},
-			14,
+			Key:   "8885",
+			Value: []byte{8, 8, 8, 8, 8, 8, 8, 8, 2, 3, 4, 5, 6, 7},
+			Size:  14,
 		},
 	}
 	indexParams := map[string]string{