mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 04:49:08 +08:00
389 lines
11 KiB
Go
389 lines
11 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package querynode
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import (
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"context"
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"errors"
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"fmt"
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"path"
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"sort"
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"strconv"
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"strings"
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"time"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/kv"
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minioKV "github.com/milvus-io/milvus/internal/kv/minio"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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"github.com/milvus-io/milvus/internal/proto/indexpb"
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"github.com/milvus-io/milvus/internal/proto/internalpb"
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"github.com/milvus-io/milvus/internal/proto/milvuspb"
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"github.com/milvus-io/milvus/internal/storage"
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"github.com/milvus-io/milvus/internal/types"
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"github.com/milvus-io/milvus/internal/util/retry"
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)
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type indexParam = map[string]string
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type indexLoader struct {
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replica ReplicaInterface
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fieldIndexes map[string][]*internalpb.IndexStats
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fieldStatsChan chan []*internalpb.FieldStats
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rootCoord types.RootCoord
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indexCoord types.IndexCoord
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kv kv.BaseKV // minio kv
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}
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//func (loader *indexLoader) doLoadIndex(wg *sync.WaitGroup) {
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// collectionIDs, _, segmentIDs := loader.replica.getSegmentsBySegmentType(segmentTypeSealed)
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// if len(collectionIDs) <= 0 {
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// wg.Done()
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// return
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// }
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// log.Debug("do load index for sealed segments:", zap.String("segmentIDs", fmt.Sprintln(segmentIDs)))
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// for i := range collectionIDs {
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// // we don't need index id yet
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// segment, err := loader.replica.getSegmentByID(segmentIDs[i])
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// if err != nil {
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// log.Warn(err.Error())
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// continue
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// }
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// vecFieldIDs, err := loader.replica.getVecFieldIDsByCollectionID(collectionIDs[i])
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// if err != nil {
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// log.Warn(err.Error())
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// continue
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// }
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// for _, fieldID := range vecFieldIDs {
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// err = loader.setIndexInfo(collectionIDs[i], segment, fieldID)
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// if err != nil {
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// log.Warn(err.Error())
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// continue
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// }
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//
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// err = loader.loadIndex(segment, fieldID)
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// if err != nil {
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// log.Warn(err.Error())
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// continue
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// }
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// }
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// }
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// // sendQueryNodeStats
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// err := loader.sendQueryNodeStats()
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// if err != nil {
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// log.Warn(err.Error())
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// wg.Done()
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// return
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// }
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//
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// wg.Done()
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//}
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func (loader *indexLoader) loadIndex(segment *Segment, fieldID int64) error {
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// 1. use msg's index paths to get index bytes
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var err error
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var indexBuffer [][]byte
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var indexParams indexParam
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var indexName string
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fn := func() error {
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indexPaths := segment.getIndexPaths(fieldID)
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indexBuffer, indexParams, indexName, err = loader.getIndexBinlog(indexPaths)
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if err != nil {
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return err
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}
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return nil
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}
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//TODO retry should be set by config
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err = retry.Do(context.TODO(), fn, retry.Attempts(10),
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retry.Sleep(time.Second*1), retry.MaxSleepTime(time.Second*10))
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if err != nil {
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return err
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}
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err = segment.setIndexName(fieldID, indexName)
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if err != nil {
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return err
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}
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err = segment.setIndexParam(fieldID, indexParams)
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if err != nil {
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return err
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}
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ok := segment.checkIndexReady(fieldID)
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if !ok {
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// no error
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return errors.New("index info is not set correctly")
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}
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// 2. use index bytes and index path to update segment
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err = segment.updateSegmentIndex(indexBuffer, fieldID)
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if err != nil {
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return err
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}
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// 3. drop vector field data if index loaded successfully
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err = segment.dropFieldData(fieldID)
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if err != nil {
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return err
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}
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// 4. update segment index stats
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err = loader.updateSegmentIndexStats(segment)
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if err != nil {
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return err
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}
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log.Debug("load index done")
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return nil
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}
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func (loader *indexLoader) printIndexParams(index []*commonpb.KeyValuePair) {
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log.Debug("=================================================")
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for i := 0; i < len(index); i++ {
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log.Debug(fmt.Sprintln(index[i]))
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}
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}
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func (loader *indexLoader) indexParamsEqual(index1 []*commonpb.KeyValuePair, index2 []*commonpb.KeyValuePair) bool {
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if len(index1) != len(index2) {
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return false
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}
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for i := 0; i < len(index1); i++ {
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kv1 := *index1[i]
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kv2 := *index2[i]
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if kv1.Key != kv2.Key || kv1.Value != kv2.Value {
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return false
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}
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}
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return true
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}
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func (loader *indexLoader) fieldsStatsIDs2Key(collectionID UniqueID, fieldID UniqueID) string {
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return strconv.FormatInt(collectionID, 10) + "/" + strconv.FormatInt(fieldID, 10)
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}
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func (loader *indexLoader) fieldsStatsKey2IDs(key string) (UniqueID, UniqueID, error) {
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ids := strings.Split(key, "/")
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if len(ids) != 2 {
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return 0, 0, errors.New("illegal fieldsStatsKey")
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}
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collectionID, err := strconv.ParseInt(ids[0], 10, 64)
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if err != nil {
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return 0, 0, err
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}
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fieldID, err := strconv.ParseInt(ids[1], 10, 64)
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if err != nil {
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return 0, 0, err
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}
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return collectionID, fieldID, nil
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}
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func (loader *indexLoader) updateSegmentIndexStats(segment *Segment) error {
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for fieldID := range segment.indexInfos {
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fieldStatsKey := loader.fieldsStatsIDs2Key(segment.collectionID, fieldID)
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_, ok := loader.fieldIndexes[fieldStatsKey]
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newIndexParams := make([]*commonpb.KeyValuePair, 0)
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indexParams := segment.getIndexParams(fieldID)
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for k, v := range indexParams {
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newIndexParams = append(newIndexParams, &commonpb.KeyValuePair{
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Key: k,
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Value: v,
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})
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}
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// sort index params by key
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sort.Slice(newIndexParams, func(i, j int) bool { return newIndexParams[i].Key < newIndexParams[j].Key })
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if !ok {
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loader.fieldIndexes[fieldStatsKey] = make([]*internalpb.IndexStats, 0)
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loader.fieldIndexes[fieldStatsKey] = append(loader.fieldIndexes[fieldStatsKey],
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&internalpb.IndexStats{
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IndexParams: newIndexParams,
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NumRelatedSegments: 1,
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})
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} else {
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isNewIndex := true
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for _, index := range loader.fieldIndexes[fieldStatsKey] {
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if loader.indexParamsEqual(newIndexParams, index.IndexParams) {
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index.NumRelatedSegments++
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isNewIndex = false
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}
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}
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if isNewIndex {
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loader.fieldIndexes[fieldStatsKey] = append(loader.fieldIndexes[fieldStatsKey],
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&internalpb.IndexStats{
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IndexParams: newIndexParams,
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NumRelatedSegments: 1,
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})
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}
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}
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}
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return nil
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}
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func (loader *indexLoader) getIndexBinlog(indexPath []string) ([][]byte, indexParam, string, error) {
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index := make([][]byte, 0)
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var indexParams indexParam
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var indexName string
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for _, p := range indexPath {
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log.Debug("", zap.String("load path", fmt.Sprintln(indexPath)))
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indexPiece, err := loader.kv.Load(p)
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if err != nil {
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return nil, nil, "", err
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}
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// get index params when detecting indexParamPrefix
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if path.Base(p) == storage.IndexParamsFile {
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indexCodec := storage.NewIndexCodec()
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_, indexParams, indexName, _, err = indexCodec.Deserialize([]*storage.Blob{
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{
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Key: storage.IndexParamsFile,
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Value: []byte(indexPiece),
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},
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})
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if err != nil {
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return nil, nil, "", err
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}
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} else {
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index = append(index, []byte(indexPiece))
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}
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}
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if len(indexParams) <= 0 {
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return nil, nil, "", errors.New("cannot find index param")
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}
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return index, indexParams, indexName, nil
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}
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func (loader *indexLoader) sendQueryNodeStats() error {
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resultFieldsStats := make([]*internalpb.FieldStats, 0)
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for fieldStatsKey, indexStats := range loader.fieldIndexes {
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colID, fieldID, err := loader.fieldsStatsKey2IDs(fieldStatsKey)
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if err != nil {
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return err
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}
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fieldStats := internalpb.FieldStats{
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CollectionID: colID,
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FieldID: fieldID,
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IndexStats: indexStats,
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}
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resultFieldsStats = append(resultFieldsStats, &fieldStats)
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}
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loader.fieldStatsChan <- resultFieldsStats
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log.Debug("sent field stats")
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return nil
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}
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func (loader *indexLoader) setIndexInfo(collectionID UniqueID, segment *Segment, fieldID UniqueID) error {
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ctx := context.TODO()
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req := &milvuspb.DescribeSegmentRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_DescribeSegment,
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},
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CollectionID: collectionID,
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SegmentID: segment.segmentID,
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}
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response, err := loader.rootCoord.DescribeSegment(ctx, req)
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if err != nil {
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return err
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}
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if response.Status.ErrorCode != commonpb.ErrorCode_Success {
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return errors.New(response.Status.Reason)
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}
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if !response.EnableIndex {
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return errors.New("there are no indexes on this segment")
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}
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if loader.indexCoord == nil {
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return errors.New("null index coordinator client")
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}
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indexFilePathRequest := &indexpb.GetIndexFilePathsRequest{
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IndexBuildIDs: []UniqueID{response.BuildID},
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}
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pathResponse, err := loader.indexCoord.GetIndexFilePaths(ctx, indexFilePathRequest)
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if err != nil || pathResponse.Status.ErrorCode != commonpb.ErrorCode_Success {
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return err
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}
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if len(pathResponse.FilePaths) <= 0 {
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return errors.New("illegal index file paths")
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}
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info := &indexInfo{
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indexID: response.IndexID,
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buildID: response.BuildID,
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indexPaths: pathResponse.FilePaths[0].IndexFilePaths,
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readyLoad: true,
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}
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segment.setEnableIndex(response.EnableIndex)
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err = segment.setIndexInfo(fieldID, info)
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if err != nil {
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return err
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}
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return nil
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}
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//func (loader *indexLoader) getIndexPaths(indexBuildID UniqueID) ([]string, error) {
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// ctx := context.TODO()
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// if loader.indexCoord == nil {
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// return nil, errors.New("null index coordinator client")
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// }
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//
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// indexFilePathRequest := &indexpb.GetIndexFilePathsRequest{
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// IndexBuildIDs: []UniqueID{indexBuildID},
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// }
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// pathResponse, err := loader.indexCoord.GetIndexFilePaths(ctx, indexFilePathRequest)
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// if err != nil || pathResponse.Status.ErrorCode != commonpb.ErrorCode_Success {
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// return nil, err
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// }
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//
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// if len(pathResponse.FilePaths) <= 0 {
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// return nil, errors.New("illegal index file paths")
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// }
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//
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// return pathResponse.FilePaths[0].IndexFilePaths, nil
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//}
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func newIndexLoader(ctx context.Context, rootCoord types.RootCoord, indexCoord types.IndexCoord, replica ReplicaInterface) *indexLoader {
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option := &minioKV.Option{
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Address: Params.MinioEndPoint,
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AccessKeyID: Params.MinioAccessKeyID,
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SecretAccessKeyID: Params.MinioSecretAccessKey,
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UseSSL: Params.MinioUseSSLStr,
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CreateBucket: true,
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BucketName: Params.MinioBucketName,
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}
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client, err := minioKV.NewMinIOKV(ctx, option)
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if err != nil {
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panic(err)
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}
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return &indexLoader{
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replica: replica,
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fieldIndexes: make(map[string][]*internalpb.IndexStats),
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fieldStatsChan: make(chan []*internalpb.FieldStats, 1024),
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rootCoord: rootCoord,
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indexCoord: indexCoord,
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kv: client,
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}
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}
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