mirror of
https://gitee.com/milvus-io/milvus.git
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322 lines
8.7 KiB
Go
322 lines
8.7 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "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
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// 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/filepath"
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"strconv"
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"sync"
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"github.com/golang/protobuf/proto"
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etcdkv "github.com/milvus-io/milvus/internal/kv/etcd"
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"go.etcd.io/etcd/api/v3/mvccpb"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/querypb"
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"github.com/milvus-io/milvus/internal/proto/segcorepb"
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"github.com/milvus-io/milvus/internal/storage"
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"github.com/milvus-io/milvus/internal/util"
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)
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// historical is in charge of historical data in query node
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type historical struct {
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ctx context.Context
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replica ReplicaInterface
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tSafeReplica TSafeReplicaInterface
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mu sync.Mutex // guards globalSealedSegments
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globalSealedSegments map[UniqueID]*querypb.SegmentInfo
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etcdKV *etcdkv.EtcdKV
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}
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// newHistorical returns a new historical
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func newHistorical(ctx context.Context,
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replica ReplicaInterface,
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etcdKV *etcdkv.EtcdKV,
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tSafeReplica TSafeReplicaInterface) *historical {
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return &historical{
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ctx: ctx,
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replica: replica,
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globalSealedSegments: make(map[UniqueID]*querypb.SegmentInfo),
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etcdKV: etcdKV,
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tSafeReplica: tSafeReplica,
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}
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}
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func (h *historical) start() {
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go h.watchGlobalSegmentMeta()
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}
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func (h *historical) close() {
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// free collectionReplica
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h.replica.freeAll()
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}
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func (h *historical) watchGlobalSegmentMeta() {
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log.Debug("query node watchGlobalSegmentMeta start")
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watchChan := h.etcdKV.WatchWithPrefix(util.SegmentMetaPrefix)
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for {
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select {
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case <-h.ctx.Done():
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log.Debug("query node watchGlobalSegmentMeta close")
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return
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case resp := <-watchChan:
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for _, event := range resp.Events {
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segmentID, err := strconv.ParseInt(filepath.Base(string(event.Kv.Key)), 10, 64)
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if err != nil {
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log.Warn("watchGlobalSegmentMeta failed", zap.Any("error", err.Error()))
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continue
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}
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switch event.Type {
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case mvccpb.PUT:
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log.Debug("globalSealedSegments add segment",
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zap.Any("segmentID", segmentID),
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)
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segmentInfo := &querypb.SegmentInfo{}
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err = proto.Unmarshal(event.Kv.Value, segmentInfo)
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if err != nil {
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log.Warn("watchGlobalSegmentMeta failed", zap.Any("error", err.Error()))
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continue
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}
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h.addGlobalSegmentInfo(segmentID, segmentInfo)
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case mvccpb.DELETE:
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log.Debug("globalSealedSegments delete segment",
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zap.Any("segmentID", segmentID),
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)
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h.removeGlobalSegmentInfo(segmentID)
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}
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}
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}
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}
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}
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func (h *historical) addGlobalSegmentInfo(segmentID UniqueID, segmentInfo *querypb.SegmentInfo) {
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h.mu.Lock()
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defer h.mu.Unlock()
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h.globalSealedSegments[segmentID] = segmentInfo
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}
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func (h *historical) removeGlobalSegmentInfo(segmentID UniqueID) {
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h.mu.Lock()
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defer h.mu.Unlock()
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delete(h.globalSealedSegments, segmentID)
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}
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func (h *historical) getGlobalSegmentIDsByCollectionID(collectionID UniqueID) []UniqueID {
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h.mu.Lock()
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defer h.mu.Unlock()
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resIDs := make([]UniqueID, 0)
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for _, v := range h.globalSealedSegments {
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if v.CollectionID == collectionID {
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resIDs = append(resIDs, v.SegmentID)
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}
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}
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return resIDs
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}
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func (h *historical) getGlobalSegmentIDsByPartitionIds(partitionIDs []UniqueID) []UniqueID {
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h.mu.Lock()
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defer h.mu.Unlock()
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resIDs := make([]UniqueID, 0)
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for _, v := range h.globalSealedSegments {
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for _, partitionID := range partitionIDs {
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if v.PartitionID == partitionID {
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resIDs = append(resIDs, v.SegmentID)
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}
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}
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}
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return resIDs
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}
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func (h *historical) removeGlobalSegmentIDsByCollectionID(collectionID UniqueID) {
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h.mu.Lock()
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defer h.mu.Unlock()
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for _, v := range h.globalSealedSegments {
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if v.CollectionID == collectionID {
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delete(h.globalSealedSegments, v.SegmentID)
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}
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}
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}
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func (h *historical) removeGlobalSegmentIDsByPartitionIds(partitionIDs []UniqueID) {
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h.mu.Lock()
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defer h.mu.Unlock()
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for _, v := range h.globalSealedSegments {
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for _, partitionID := range partitionIDs {
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if v.PartitionID == partitionID {
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delete(h.globalSealedSegments, v.SegmentID)
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}
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}
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}
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}
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func (h *historical) retrieve(collID UniqueID, partIDs []UniqueID, vcm storage.ChunkManager,
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plan *RetrievePlan) ([]*segcorepb.RetrieveResults, []UniqueID, error) {
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retrieveResults := make([]*segcorepb.RetrieveResults, 0)
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retrieveSegmentIDs := make([]UniqueID, 0)
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// get historical partition ids
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var retrievePartIDs []UniqueID
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if len(partIDs) == 0 {
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hisPartIDs, err := h.replica.getPartitionIDs(collID)
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if err != nil {
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return retrieveResults, retrieveSegmentIDs, err
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}
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retrievePartIDs = hisPartIDs
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} else {
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for _, id := range partIDs {
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_, err := h.replica.getPartitionByID(id)
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if err == nil {
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retrievePartIDs = append(retrievePartIDs, id)
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}
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}
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}
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for _, partID := range retrievePartIDs {
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segIDs, err := h.replica.getSegmentIDs(partID)
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if err != nil {
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return retrieveResults, retrieveSegmentIDs, err
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}
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for _, segID := range segIDs {
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seg, err := h.replica.getSegmentByID(segID)
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if err != nil {
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return retrieveResults, retrieveSegmentIDs, err
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}
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result, err := seg.retrieve(plan)
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if err != nil {
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return retrieveResults, retrieveSegmentIDs, err
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}
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if err = seg.fillVectorFieldsData(collID, vcm, result); err != nil {
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return retrieveResults, retrieveSegmentIDs, err
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}
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retrieveResults = append(retrieveResults, result)
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retrieveSegmentIDs = append(retrieveSegmentIDs, segID)
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}
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}
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return retrieveResults, retrieveSegmentIDs, nil
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}
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// search will search all the target segments in historical
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func (h *historical) search(searchReqs []*searchRequest, collID UniqueID, partIDs []UniqueID, plan *SearchPlan,
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searchTs Timestamp) ([]*SearchResult, []UniqueID, error) {
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searchResults := make([]*SearchResult, 0)
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searchSegmentIDs := make([]UniqueID, 0)
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// get historical partition ids
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var searchPartIDs []UniqueID
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if len(partIDs) == 0 {
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hisPartIDs, err := h.replica.getPartitionIDs(collID)
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if err != nil {
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return searchResults, searchSegmentIDs, err
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}
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log.Debug("no partition specified, search all partitions",
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zap.Any("collectionID", collID),
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zap.Any("all partitions", hisPartIDs),
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)
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searchPartIDs = hisPartIDs
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} else {
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for _, id := range partIDs {
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_, err := h.replica.getPartitionByID(id)
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if err == nil {
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log.Debug("append search partition id",
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zap.Any("collectionID", collID),
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zap.Any("partitionID", id),
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)
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searchPartIDs = append(searchPartIDs, id)
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}
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}
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}
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col, err := h.replica.getCollectionByID(collID)
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if err != nil {
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return nil, nil, err
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}
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// all partitions have been released
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if len(searchPartIDs) == 0 && col.getLoadType() == loadTypePartition {
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return nil, nil, errors.New("partitions have been released , collectionID = " +
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fmt.Sprintln(collID) + "target partitionIDs = " + fmt.Sprintln(partIDs))
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}
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if len(searchPartIDs) == 0 && col.getLoadType() == loadTypeCollection {
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if err = col.checkReleasedPartitions(partIDs); err != nil {
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return nil, nil, err
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}
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return nil, nil, nil
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}
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log.Debug("doing search in historical",
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zap.Any("collectionID", collID),
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zap.Any("reqPartitionIDs", partIDs),
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zap.Any("searchPartitionIDs", searchPartIDs),
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)
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var segmentLock sync.RWMutex
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for _, partID := range searchPartIDs {
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segIDs, err := h.replica.getSegmentIDs(partID)
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if err != nil {
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return searchResults, searchSegmentIDs, err
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}
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var err2 error
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var wg sync.WaitGroup
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for _, segID := range segIDs {
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segID2 := segID
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wg.Add(1)
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go func() {
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defer wg.Done()
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seg, err := h.replica.getSegmentByID(segID2)
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if err != nil {
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err2 = err
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return
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}
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if !seg.getOnService() {
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return
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}
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searchResult, err := seg.search(plan, searchReqs, []Timestamp{searchTs})
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if err != nil {
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err2 = err
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return
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}
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segmentLock.Lock()
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searchResults = append(searchResults, searchResult)
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searchSegmentIDs = append(searchSegmentIDs, seg.segmentID)
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segmentLock.Unlock()
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}()
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}
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wg.Wait()
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if err2 != nil {
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return searchResults, searchSegmentIDs, err2
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}
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}
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return searchResults, searchSegmentIDs, nil
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}
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