Adding a generic stream payload reader.

Signed-off-by: Ted Xu <ted.xu@zilliz.com>

internal/storage/data_codec.go

@@ -1007,43 +1007,38 @@ func (deleteCodec *DeleteCodec) Deserialize(blobs []*Blob) (partitionID UniqueID
 		if err != nil {
 			return InvalidUniqueID, InvalidUniqueID, nil, err
 		}
+		defer binlogReader.Close()
 
 		pid, sid = binlogReader.PartitionID, binlogReader.SegmentID
 		eventReader, err := binlogReader.NextEventReader()
 		if err != nil {
-			binlogReader.Close()
 			return InvalidUniqueID, InvalidUniqueID, nil, err
 		}
+		defer eventReader.Close()
 
-		dataset, err := eventReader.GetByteArrayDataSet()
+		rr, err := eventReader.GetArrowRecordReader()
 		if err != nil {
-			eventReader.Close()
-			binlogReader.Close()
 			return InvalidUniqueID, InvalidUniqueID, nil, err
 		}
+		defer rr.Release()
 
-		batchSize := int64(1024)
-		for dataset.HasNext() {
-			stringArray, err := dataset.NextBatch(batchSize)
-			if err != nil {
-				return InvalidUniqueID, InvalidUniqueID, nil, err
-			}
-			for i := 0; i < len(stringArray); i++ {
+		for rr.Next() {
+			rec := rr.Record()
+			defer rec.Release()
+			column := rec.Column(0)
+			for i := 0; i < column.Len(); i++ {
 				deleteLog := &DeleteLog{}
-				if err = json.Unmarshal(stringArray[i], deleteLog); err != nil {
+				strVal := column.ValueStr(i)
+				if err = json.Unmarshal([]byte(strVal), deleteLog); err != nil {
 					// compatible with versions that only support int64 type primary keys
 					// compatible with fmt.Sprintf("%d,%d", pk, ts)
 					// compatible error info (unmarshal err invalid character ',' after top-level value)
-					splits := strings.Split(stringArray[i].String(), ",")
+					splits := strings.Split(strVal, ",")
 					if len(splits) != 2 {
-						eventReader.Close()
-						binlogReader.Close()
-						return InvalidUniqueID, InvalidUniqueID, nil, fmt.Errorf("the format of delta log is incorrect, %v can not be split", stringArray[i])
+						return InvalidUniqueID, InvalidUniqueID, nil, fmt.Errorf("the format of delta log is incorrect, %v can not be split", strVal)
 					}
 					pk, err := strconv.ParseInt(splits[0], 10, 64)
 					if err != nil {
-						eventReader.Close()
-						binlogReader.Close()
 						return InvalidUniqueID, InvalidUniqueID, nil, err
 					}
 					deleteLog.Pk = &Int64PrimaryKey{
@@ -1052,17 +1047,13 @@ func (deleteCodec *DeleteCodec) Deserialize(blobs []*Blob) (partitionID UniqueID
 					deleteLog.PkType = int64(schemapb.DataType_Int64)
 					deleteLog.Ts, err = strconv.ParseUint(splits[1], 10, 64)
 					if err != nil {
-						eventReader.Close()
-						binlogReader.Close()
 						return InvalidUniqueID, InvalidUniqueID, nil, err
 					}
 				}
 
 				result.Append(deleteLog.Pk, deleteLog.Ts)
 			}
 		}
-		eventReader.Close()
-		binlogReader.Close()
 	}
 
 	return pid, sid, result, nil

internal/storage/payload.go

@@ -19,6 +19,7 @@ package storage
 import (
 	"github.com/apache/arrow/go/v12/parquet"
 	"github.com/apache/arrow/go/v12/parquet/file"
+	"github.com/apache/arrow/go/v12/parquet/pqarrow"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
 )
@@ -69,6 +70,7 @@ type PayloadReaderInterface interface {
 	GetPayloadLengthFromReader() (int, error)
 
 	GetByteArrayDataSet() (*DataSet[parquet.ByteArray, *file.ByteArrayColumnChunkReader], error)
+	GetArrowRecordReader() (pqarrow.RecordReader, error)
 
 	ReleasePayloadReader() error
 	Close() error

internal/storage/payload_reader.go

@@ -2,11 +2,14 @@ package storage
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 
 	"github.com/apache/arrow/go/v12/arrow"
+	"github.com/apache/arrow/go/v12/arrow/memory"
 	"github.com/apache/arrow/go/v12/parquet"
 	"github.com/apache/arrow/go/v12/parquet/file"
+	"github.com/apache/arrow/go/v12/parquet/pqarrow"
 	"github.com/cockroachdb/errors"
 	"github.com/golang/protobuf/proto"
 
@@ -263,6 +266,19 @@ func (r *PayloadReader) GetByteArrayDataSet() (*DataSet[parquet.ByteArray, *file
 	return NewDataSet[parquet.ByteArray, *file.ByteArrayColumnChunkReader](r.reader, 0, r.numRows), nil
 }
 
+func (r *PayloadReader) GetArrowRecordReader() (pqarrow.RecordReader, error) {
+	arrowReader, err := pqarrow.NewFileReader(r.reader, pqarrow.ArrowReadProperties{BatchSize: 1024}, memory.DefaultAllocator)
+	if err != nil {
+		return nil, err
+	}
+
+	rr, err := arrowReader.GetRecordReader(context.Background(), nil, nil)
+	if err != nil {
+		return nil, err
+	}
+	return rr, nil
+}
+
 func (r *PayloadReader) GetArrayFromPayload() ([]*schemapb.ScalarField, error) {
 	if r.colType != schemapb.DataType_Array {
 		return nil, fmt.Errorf("failed to get string from datatype %v", r.colType.String())

internal/storage/payload_test.go

@@ -18,8 +18,10 @@ package storage
 
 import (
 	"math"
+	"math/rand"
 	"testing"
 
+	"github.com/apache/arrow/go/v12/arrow/array"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -1385,3 +1387,109 @@ func TestPayload_ReaderAndWriter(t *testing.T) {
 		w.ReleasePayloadWriter()
 	})
 }
+
+func dataGen(size int) ([]byte, error) {
+	w, err := NewPayloadWriter(schemapb.DataType_String)
+	if err != nil {
+		return nil, err
+	}
+	defer w.Close()
+
+	letterRunes := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+	for i := 0; i < size; i++ {
+		b := make([]rune, 20)
+		for i := range b {
+			b[i] = letterRunes[rand.Intn(len(letterRunes))]
+		}
+		w.AddOneStringToPayload(string(b))
+	}
+	err = w.FinishPayloadWriter()
+	if err != nil {
+		return nil, err
+	}
+	buffer, err := w.GetPayloadBufferFromWriter()
+	if err != nil {
+		return nil, err
+	}
+	return buffer, err
+}
+
+func BenchmarkDefaultReader(b *testing.B) {
+	size := 1000000
+	buffer, err := dataGen(size)
+	assert.NoError(b, err)
+
+	b.ResetTimer()
+	r, err := NewPayloadReader(schemapb.DataType_String, buffer)
+	require.Nil(b, err)
+	defer r.ReleasePayloadReader()
+
+	length, err := r.GetPayloadLengthFromReader()
+	assert.NoError(b, err)
+	assert.Equal(b, length, size)
+
+	d, err := r.GetStringFromPayload()
+	assert.NoError(b, err)
+	for i := 0; i < 100; i++ {
+		for _, de := range d {
+			assert.Equal(b, 20, len(de))
+		}
+	}
+}
+func BenchmarkDataSetReader(b *testing.B) {
+	size := 1000000
+	buffer, err := dataGen(size)
+	assert.NoError(b, err)
+
+	b.ResetTimer()
+	r, err := NewPayloadReader(schemapb.DataType_String, buffer)
+	require.Nil(b, err)
+	defer r.ReleasePayloadReader()
+
+	length, err := r.GetPayloadLengthFromReader()
+	assert.NoError(b, err)
+	assert.Equal(b, length, size)
+
+	ds, err := r.GetByteArrayDataSet()
+	assert.NoError(b, err)
+
+	for i := 0; i < 100; i++ {
+		for ds.HasNext() {
+			stringArray, err := ds.NextBatch(1024)
+			assert.NoError(b, err)
+			for _, de := range stringArray {
+				assert.Equal(b, 20, len(string(de)))
+			}
+		}
+	}
+}
+func BenchmarkArrowRecordReader(b *testing.B) {
+	size := 1000000
+	buffer, err := dataGen(size)
+	assert.NoError(b, err)
+
+	b.ResetTimer()
+	r, err := NewPayloadReader(schemapb.DataType_String, buffer)
+	require.Nil(b, err)
+	defer r.ReleasePayloadReader()
+
+	length, err := r.GetPayloadLengthFromReader()
+	assert.NoError(b, err)
+	assert.Equal(b, length, size)
+
+	rr, err := r.GetArrowRecordReader()
+	assert.NoError(b, err)
+	defer rr.Release()
+
+	for i := 0; i < 100; i++ {
+		for rr.Next() {
+			rec := rr.Record()
+			arr := rec.Column(0).(*array.String)
+			defer rec.Release()
+			for i := 0; i < arr.Len(); i++ {
+				assert.Equal(b, 20, len(arr.Value(i)))
+			}
+		}
+	}
+}