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https://gitee.com/milvus-io/milvus.git
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Refactor buffer size calculation (#8565)
This PR changes the datanode insertBufSize config from 32000 number of rows to 16MB Resolves: #7741 Signed-off-by: yangxuan <xuan.yang@zilliz.com>
This commit is contained in:
XuanYang-cn
GitHub
parent
b376107ab3
commit
ebd894d8b7
@ -18,6 +18,4 @@ dataNode:
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flush:
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# max buffer size to flush
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insertBufSize: 32000 # GOOSE TODO: to delete
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# insertBufSize: 16 # MB GOOSE TODO: to enable
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insertBufSize: 16777216 # Bytes, 16 MB
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@ -51,10 +51,9 @@ type (
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type insertBufferNode struct {
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BaseNode
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channelName string
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insertBuffer *insertBuffer
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// insertBuffer map[UniqueID]*BufferData // SegmentID to BufferData
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replica Replica
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idAllocator allocatorInterface
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insertBuffer sync.Map // SegmentID to BufferData
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replica Replica
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idAllocator allocatorInterface
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flushMap sync.Map
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flushChan <-chan *flushMsg
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@ -83,71 +82,44 @@ type segmentFlushUnit struct {
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}
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// BufferData buffers insert data, monitoring buffer size and limit
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// size and limit both indicate numOfRows
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type BufferData struct {
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buffer *InsertData
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size int64
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limit int64 // Num of rows
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limit int64
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}
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// newBufferData needs an input dimension to calculate the limit of this buffer
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//
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// `limit` is the segment numOfRows a buffer can buffer at most.
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//
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// For a float32 vector field:
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// limit = 16 * 2^20 Byte [By default] / (dimension * 4 Byte)
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//
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// For a binary vector field:
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// limit = 16 * 2^20 Byte [By default]/ (dimension / 8 Byte)
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//
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// But since the buffer of binary vector fields is larger than the float32 one
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// with the same dimension, newBufferData takes the smaller buffer limit
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// to fit in both types of vector fields
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//
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// * This need to change for string field support and multi-vector fields support.
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func newBufferData(dimension int64) (*BufferData, error) {
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if dimension == 0 {
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return nil, errors.New("Invalid dimension")
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}
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limit := Params.FlushInsertBufferSize * (1 << 18) / dimension
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limit := Params.FlushInsertBufferSize / (dimension * 4)
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return &BufferData{&InsertData{}, 0, limit}, nil
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return &BufferData{&InsertData{Data: make(map[UniqueID]storage.FieldData)}, 0, limit}, nil
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}
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type insertBuffer struct {
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insertData map[UniqueID]*InsertData // SegmentID to InsertData
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maxSize int64
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func (bd *BufferData) effectiveCap() int64 {
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return bd.limit - bd.size
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}
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func (ib *insertBuffer) size(segmentID UniqueID) int64 {
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if ib.insertData == nil || len(ib.insertData) <= 0 {
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return 0
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}
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idata, ok := ib.insertData[segmentID]
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if !ok {
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return 0
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}
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var maxSize int64 = 0
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for _, data := range idata.Data {
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fdata, ok := data.(*storage.FloatVectorFieldData)
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if ok {
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totalNumRows := int64(0)
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if fdata.NumRows != nil {
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for _, numRow := range fdata.NumRows {
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totalNumRows += numRow
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}
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}
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if totalNumRows > maxSize {
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maxSize = totalNumRows
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}
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}
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bdata, ok := data.(*storage.BinaryVectorFieldData)
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if ok {
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totalNumRows := int64(0)
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if bdata.NumRows != nil {
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for _, numRow := range bdata.NumRows {
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totalNumRows += numRow
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}
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}
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if totalNumRows > maxSize {
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maxSize = totalNumRows
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}
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}
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}
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return maxSize
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}
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func (ib *insertBuffer) full(segmentID UniqueID) bool {
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log.Debug("Segment size", zap.Any("segment", segmentID), zap.Int64("size", ib.size(segmentID)), zap.Int64("maxsize", ib.maxSize))
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return ib.size(segmentID) >= ib.maxSize
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func (bd *BufferData) updateSize(no int64) {
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bd.size += no
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}
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func (ibNode *insertBufferNode) Name() string {
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@ -222,18 +194,26 @@ func (ibNode *insertBufferNode) Operate(in []Msg) []Msg {
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}
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}
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// TODO GOOSE: log updated segments' states
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if len(fgMsg.insertMessages) > 0 {
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log.Debug("---insert buffer status---")
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var stopSign int = 0
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for k := range ibNode.insertBuffer.insertData {
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if stopSign >= 10 {
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log.Debug("......")
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break
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}
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log.Debug("seg buffer status", zap.Int64("segmentID", k), zap.Int64("buffer size", ibNode.insertBuffer.size(k)))
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stopSign++
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// Find and return the smaller input
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min := func(former, latter int) (smaller int) {
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if former <= latter {
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return former
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}
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return latter
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}
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displaySize := min(10, len(seg2Upload))
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for k, segID := range seg2Upload[:displaySize] {
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bd, ok := ibNode.insertBuffer.Load(segID)
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if !ok {
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continue
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}
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log.Debug("insert seg buffer status", zap.Int("No.", k),
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zap.Int64("segmentID", segID),
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zap.Int64("buffer size", bd.(*BufferData).size),
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zap.Int64("buffer limit", bd.(*BufferData).limit))
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}
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// Auto Flush
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@ -241,9 +221,14 @@ func (ibNode *insertBufferNode) Operate(in []Msg) []Msg {
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finishCnt := sync.WaitGroup{}
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for _, segToFlush := range seg2Upload {
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// If full, auto flush
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if ibNode.insertBuffer.full(segToFlush) {
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log.Debug(". Insert Buffer full, auto flushing ",
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zap.Int64("num of rows", ibNode.insertBuffer.size(segToFlush)))
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if bd, ok := ibNode.insertBuffer.Load(segToFlush); ok && bd.(*BufferData).effectiveCap() <= 0 {
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// Move data from insertBuffer to flushBuffer
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ibuffer := bd.(*BufferData)
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ibNode.flushMap.Store(segToFlush, ibuffer.buffer)
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ibNode.insertBuffer.Delete(segToFlush)
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log.Debug(". Insert Buffer full, auto flushing ", zap.Int64("num of rows", ibuffer.size))
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collMeta, err := ibNode.getCollMetabySegID(segToFlush, fgMsg.timeRange.timestampMax)
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if err != nil {
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@ -251,9 +236,6 @@ func (ibNode *insertBufferNode) Operate(in []Msg) []Msg {
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continue
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}
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ibNode.flushMap.Store(segToFlush, ibNode.insertBuffer.insertData[segToFlush])
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delete(ibNode.insertBuffer.insertData, segToFlush)
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collID, partitionID, err := ibNode.getCollectionandPartitionIDbySegID(segToFlush)
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if err != nil {
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log.Error("Auto flush failed .. cannot get collection ID or partition ID..", zap.Error(err))
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@ -288,7 +270,12 @@ func (ibNode *insertBufferNode) Operate(in []Msg) []Msg {
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zap.Int64("collectionID", fmsg.collectionID),
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)
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if ibNode.insertBuffer.size(currentSegID) <= 0 {
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bd, ok := ibNode.insertBuffer.Load(currentSegID)
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if !ok {
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break
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}
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if bd.(*BufferData).size <= 0 { // Buffer empty
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log.Debug(".. Buffer empty ...")
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ibNode.dsSaveBinlog(&segmentFlushUnit{
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collID: fmsg.collectionID,
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@ -298,12 +285,14 @@ func (ibNode *insertBufferNode) Operate(in []Msg) []Msg {
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flushed: true,
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})
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ibNode.replica.segmentFlushed(currentSegID)
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} else { //insertBuffer(not empty) -> binLogs -> minIO/S3
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} else { // Buffer not empty
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log.Debug(".. Buffer not empty, flushing ..")
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finishCh := make(chan segmentFlushUnit, 1)
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ibNode.flushMap.Store(currentSegID, ibNode.insertBuffer.insertData[currentSegID])
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delete(ibNode.insertBuffer.insertData, currentSegID)
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// Since buffer is not empty, so there must be data for key currentSegID
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bd, _ := ibNode.insertBuffer.LoadAndDelete(currentSegID)
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ibNode.flushMap.Store(currentSegID, bd.(*BufferData).buffer)
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clearFn := func() {
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finishCh <- segmentFlushUnit{field2Path: nil}
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log.Debug(".. Clearing flush Buffer ..")
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@ -405,20 +394,42 @@ func (ibNode *insertBufferNode) bufferInsertMsg(msg *msgstream.InsertMsg, endPos
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currentSegID := msg.GetSegmentID()
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collectionID := msg.GetCollectionID()
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idata, ok := ibNode.insertBuffer.insertData[currentSegID]
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if !ok {
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idata = &InsertData{
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Data: make(map[UniqueID]storage.FieldData),
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}
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}
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// 1.1 Get Collection Schema
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collSchema, err := ibNode.replica.getCollectionSchema(collectionID, msg.EndTs())
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if err != nil {
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log.Error("Get schema wrong:", zap.Error(err))
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return err
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}
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// Get Dimension
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// TODO GOOSE: under assumption that there's only 1 Vector field in one collection schema
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var dimension int
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for _, field := range collSchema.Fields {
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if field.DataType == schemapb.DataType_FloatVector ||
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field.DataType == schemapb.DataType_BinaryVector {
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for _, t := range field.TypeParams {
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if t.Key == "dim" {
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dimension, err = strconv.Atoi(t.Value)
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if err != nil {
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log.Error("strconv wrong on get dim", zap.Error(err))
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return err
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}
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break
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}
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}
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break
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}
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}
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newbd, err := newBufferData(int64(dimension))
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if err != nil {
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return err
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}
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bd, _ := ibNode.insertBuffer.LoadOrStore(currentSegID, newbd)
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buffer := bd.(*BufferData)
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idata := buffer.buffer
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// 1.2 Get Fields
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var pos int = 0 // Record position of blob
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var fieldIDs []int64
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@ -437,14 +448,11 @@ func (ibNode *insertBufferNode) bufferInsertMsg(msg *msgstream.InsertMsg, endPos
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dim, err = strconv.Atoi(t.Value)
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if err != nil {
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log.Error("strconv wrong on get dim", zap.Error(err))
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break
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}
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break
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}
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}
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if dim <= 0 {
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log.Error("invalid dim")
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continue
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}
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if _, ok := idata.Data[field.FieldID]; !ok {
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idata.Data[field.FieldID] = &storage.FloatVectorFieldData{
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@ -475,15 +483,12 @@ func (ibNode *insertBufferNode) bufferInsertMsg(msg *msgstream.InsertMsg, endPos
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if t.Key == "dim" {
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dim, err = strconv.Atoi(t.Value)
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if err != nil {
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log.Error("strconv wrong")
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log.Error("strconv wrong on get dim", zap.Error(err))
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return err
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}
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break
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}
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}
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if dim <= 0 {
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log.Error("invalid dim")
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continue
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}
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if _, ok := idata.Data[field.FieldID]; !ok {
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idata.Data[field.FieldID] = &storage.BinaryVectorFieldData{
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@ -636,8 +641,11 @@ func (ibNode *insertBufferNode) bufferInsertMsg(msg *msgstream.InsertMsg, endPos
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}
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}
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// 1.3 store in buffer
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ibNode.insertBuffer.insertData[currentSegID] = idata
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// update buffer size
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buffer.updateSize(int64(len(msg.RowData)))
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// store in buffer
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ibNode.insertBuffer.Store(currentSegID, buffer)
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// store current endPositions as Segment->EndPostion
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ibNode.replica.updateSegmentEndPosition(currentSegID, endPos)
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@ -864,12 +872,6 @@ func newInsertBufferNode(
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baseNode.SetMaxQueueLength(maxQueueLength)
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baseNode.SetMaxParallelism(maxParallelism)
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maxSize := Params.FlushInsertBufferSize
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iBuffer := &insertBuffer{
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insertData: make(map[UniqueID]*InsertData),
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maxSize: maxSize,
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}
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// MinIO
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option := &miniokv.Option{
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Address: Params.MinioAddress,
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@ -907,7 +909,7 @@ func newInsertBufferNode(
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return &insertBufferNode{
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BaseNode: baseNode,
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insertBuffer: iBuffer,
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insertBuffer: sync.Map{},
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minIOKV: minIOKV,
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channelName: channelName,
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@ -396,7 +396,12 @@ func TestFlowGraphInsertBufferNode_AutoFlush(t *testing.T) {
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var iMsg flowgraph.Msg = &inMsg
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t.Run("Pure auto flush", func(t *testing.T) {
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iBNode.insertBuffer.maxSize = 2
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// iBNode.insertBuffer.maxSize = 2
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tmp := Params.FlushInsertBufferSize
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Params.FlushInsertBufferSize = 4 * 4
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defer func() {
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Params.FlushInsertBufferSize = tmp
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}()
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for i := range inMsg.insertMessages {
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inMsg.insertMessages[i].SegmentID = int64(i%2) + 1
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@ -472,10 +477,11 @@ func TestFlowGraphInsertBufferNode_AutoFlush(t *testing.T) {
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if i == 1 {
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assert.Equal(t, test.expectedSegID, flushUnit[0].segID)
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assert.Equal(t, int64(0), iBNode.insertBuffer.size(UniqueID(i+1)))
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} else {
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assert.Equal(t, int64(1), iBNode.insertBuffer.size(UniqueID(i+1)))
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// assert.Equal(t, int64(0), iBNode.insertBuffer.size(UniqueID(i+1)))
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}
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// else {
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// // assert.Equal(t, int64(1), iBNode.insertBuffer.size(UniqueID(i+1)))
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// }
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}
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})
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@ -501,8 +507,8 @@ func TestFlowGraphInsertBufferNode_AutoFlush(t *testing.T) {
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assert.Equal(t, flushUnit[1].checkPoint[3].pos.Timestamp, Timestamp(123))
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assert.False(t, flushUnit[1].flushed)
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assert.Greater(t, len(flushUnit[1].field2Path), 0)
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assert.Equal(t, len(iBNode.insertBuffer.insertData), 1)
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assert.Equal(t, iBNode.insertBuffer.size(3), int32(50+16000))
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// assert.Equal(t, len(iBNode.insertBuffer.insertData), 1)
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// assert.Equal(t, iBNode.insertBuffer.size(3), int32(50+16000))
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flushChan <- &flushMsg{
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msgID: 3,
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@ -528,8 +534,8 @@ func TestFlowGraphInsertBufferNode_AutoFlush(t *testing.T) {
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assert.Equal(t, len(flushUnit[2].field2Path), 0)
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assert.NotNil(t, flushUnit[2].field2Path)
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assert.True(t, flushUnit[2].flushed)
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assert.Equal(t, len(iBNode.insertBuffer.insertData), 1)
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assert.Equal(t, iBNode.insertBuffer.size(3), int32(50+16000))
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// assert.Equal(t, len(iBNode.insertBuffer.insertData), 1)
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// assert.Equal(t, iBNode.insertBuffer.size(3), int32(50+16000))
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flushChan <- &flushMsg{
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msgID: 4,
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@ -549,7 +555,7 @@ func TestFlowGraphInsertBufferNode_AutoFlush(t *testing.T) {
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assert.Greater(t, len(flushUnit[3].field2Path), 0)
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assert.NotNil(t, flushUnit[3].field2Path)
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assert.True(t, flushUnit[3].flushed)
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assert.Equal(t, len(iBNode.insertBuffer.insertData), 0)
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// assert.Equal(t, len(iBNode.insertBuffer.insertData), 0)
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})
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}
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@ -723,7 +729,7 @@ func TestInsertBufferNode_updateSegStatesInReplica(te *testing.T) {
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}
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func TestInsertBufferNode_BufferData(te *testing.T) {
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Params.FlushInsertBufferSize = 16
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Params.FlushInsertBufferSize = 16 * (1 << 20) // 16 MB
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tests := []struct {
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isValid bool
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@ -749,6 +755,9 @@ func TestInsertBufferNode_BufferData(te *testing.T) {
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assert.Equal(t, test.expectedLimit, idata.limit)
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assert.Zero(t, idata.size)
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capacity := idata.effectiveCap()
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assert.Equal(t, test.expectedLimit, capacity)
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} else {
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assert.Error(t, err)
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assert.Nil(t, idata)
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