mirror of
https://gitee.com/milvus-io/milvus.git
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624 lines
18 KiB
Go
624 lines
18 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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"math/rand"
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"strconv"
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"time"
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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/datapb"
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"github.com/milvus-io/milvus/internal/proto/internalpb"
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queryPb "github.com/milvus-io/milvus/internal/proto/querypb"
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"github.com/milvus-io/milvus/internal/rootcoord"
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)
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type task interface {
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ID() UniqueID // return ReqID
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SetID(uid UniqueID) // set ReqID
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Timestamp() Timestamp
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PreExecute(ctx context.Context) error
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Execute(ctx context.Context) error
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PostExecute(ctx context.Context) error
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WaitToFinish() error
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Notify(err error)
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OnEnqueue() error
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}
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type baseTask struct {
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done chan error
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ctx context.Context
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id UniqueID
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}
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type watchDmChannelsTask struct {
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baseTask
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req *queryPb.WatchDmChannelsRequest
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node *QueryNode
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}
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type loadSegmentsTask struct {
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baseTask
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req *queryPb.LoadSegmentsRequest
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node *QueryNode
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}
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type releaseCollectionTask struct {
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baseTask
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req *queryPb.ReleaseCollectionRequest
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node *QueryNode
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}
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type releasePartitionsTask struct {
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baseTask
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req *queryPb.ReleasePartitionsRequest
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node *QueryNode
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}
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func (b *baseTask) ID() UniqueID {
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return b.id
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}
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func (b *baseTask) SetID(uid UniqueID) {
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b.id = uid
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}
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func (b *baseTask) WaitToFinish() error {
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err := <-b.done
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return err
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}
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func (b *baseTask) Notify(err error) {
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b.done <- err
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}
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// watchDmChannelsTask
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func (w *watchDmChannelsTask) Timestamp() Timestamp {
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if w.req.Base == nil {
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log.Warn("nil base req in watchDmChannelsTask", zap.Any("collectionID", w.req.CollectionID))
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return 0
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}
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return w.req.Base.Timestamp
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}
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func (w *watchDmChannelsTask) OnEnqueue() error {
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if w.req == nil || w.req.Base == nil {
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w.SetID(rand.Int63n(100000000000))
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} else {
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w.SetID(w.req.Base.MsgID)
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}
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return nil
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}
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func (w *watchDmChannelsTask) PreExecute(ctx context.Context) error {
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return nil
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}
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func (w *watchDmChannelsTask) Execute(ctx context.Context) error {
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collectionID := w.req.CollectionID
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partitionID := w.req.PartitionID
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// if no partitionID is specified, load type is load collection
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loadPartition := partitionID != 0
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// get all vChannels
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vChannels := make([]Channel, 0)
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pChannels := make([]Channel, 0)
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VPChannels := make(map[string]string) // map[vChannel]pChannel
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for _, info := range w.req.Infos {
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v := info.ChannelName
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p := rootcoord.ToPhysicalChannel(info.ChannelName)
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vChannels = append(vChannels, v)
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pChannels = append(pChannels, p)
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VPChannels[v] = p
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}
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log.Debug("starting WatchDmChannels ...",
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zap.Any("collectionName", w.req.Schema.Name),
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zap.Any("collectionID", collectionID),
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zap.Any("vChannels", vChannels),
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zap.Any("pChannels", pChannels),
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)
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if len(VPChannels) != len(vChannels) {
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return errors.New("get physical channels failed, illegal channel length, collectionID = " + fmt.Sprintln(collectionID))
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}
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log.Debug("get physical channels done",
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zap.Any("collectionID", collectionID),
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)
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// init replica
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if hasCollectionInStreaming := w.node.streaming.replica.hasCollection(collectionID); !hasCollectionInStreaming {
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err := w.node.streaming.replica.addCollection(collectionID, w.req.Schema)
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if err != nil {
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return err
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}
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}
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w.node.streaming.replica.initExcludedSegments(collectionID)
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if hasCollectionInHistorical := w.node.historical.replica.hasCollection(collectionID); !hasCollectionInHistorical {
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err := w.node.historical.replica.addCollection(collectionID, w.req.Schema)
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if err != nil {
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return err
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}
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}
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var l loadType
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if loadPartition {
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l = loadTypePartition
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} else {
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l = loadTypeCollection
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}
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sCol, err := w.node.streaming.replica.getCollectionByID(collectionID)
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if err != nil {
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return err
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}
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sCol.addVChannels(vChannels)
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sCol.addPChannels(pChannels)
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sCol.setLoadType(l)
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hCol, err := w.node.historical.replica.getCollectionByID(collectionID)
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if err != nil {
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return err
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}
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hCol.addVChannels(vChannels)
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hCol.addPChannels(pChannels)
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hCol.setLoadType(l)
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if loadPartition {
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sCol.deleteReleasedPartition(partitionID)
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hCol.deleteReleasedPartition(partitionID)
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if hasPartitionInStreaming := w.node.streaming.replica.hasPartition(partitionID); !hasPartitionInStreaming {
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err := w.node.streaming.replica.addPartition(collectionID, partitionID)
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if err != nil {
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return err
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}
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}
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if hasPartitionInHistorical := w.node.historical.replica.hasPartition(partitionID); !hasPartitionInHistorical {
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err := w.node.historical.replica.addPartition(collectionID, partitionID)
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if err != nil {
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return err
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}
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}
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}
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log.Debug("watchDMChannel, init replica done", zap.Any("collectionID", collectionID))
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// get subscription name
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getUniqueSubName := func() string {
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prefixName := Params.MsgChannelSubName
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return prefixName + "-" + strconv.FormatInt(collectionID, 10) + "-" + strconv.Itoa(rand.Int())
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}
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consumeSubName := getUniqueSubName()
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// group channels by to seeking or consuming
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toSeekChannels := make([]*internalpb.MsgPosition, 0)
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toSubChannels := make([]Channel, 0)
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for _, info := range w.req.Infos {
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if info.SeekPosition == nil || len(info.SeekPosition.MsgID) == 0 {
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toSubChannels = append(toSubChannels, info.ChannelName)
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continue
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}
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info.SeekPosition.MsgGroup = consumeSubName
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toSeekChannels = append(toSeekChannels, info.SeekPosition)
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}
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log.Debug("watchDMChannel, group channels done", zap.Any("collectionID", collectionID))
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// add check points info
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checkPointInfos := make([]*datapb.SegmentInfo, 0)
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for _, info := range w.req.Infos {
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checkPointInfos = append(checkPointInfos, info.UnflushedSegments...)
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}
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err = w.node.streaming.replica.addExcludedSegments(collectionID, checkPointInfos)
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if err != nil {
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log.Warn(err.Error())
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return err
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}
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log.Debug("watchDMChannel, add check points info done", zap.Any("collectionID", collectionID))
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// create tSafe
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for _, channel := range vChannels {
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w.node.streaming.tSafeReplica.addTSafe(channel)
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}
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// add flow graph
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if loadPartition {
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w.node.streaming.dataSyncService.addPartitionFlowGraph(collectionID, partitionID, vChannels)
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log.Debug("query node add partition flow graphs", zap.Any("channels", vChannels))
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} else {
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w.node.streaming.dataSyncService.addCollectionFlowGraph(collectionID, vChannels)
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log.Debug("query node add collection flow graphs", zap.Any("channels", vChannels))
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}
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// add tSafe watcher if queryCollection exists
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qc, err := w.node.queryService.getQueryCollection(collectionID)
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if err == nil {
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for _, channel := range vChannels {
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err = qc.addTSafeWatcher(channel)
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if err != nil {
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// tSafe have been exist, not error
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log.Warn(err.Error())
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}
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}
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}
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// channels as consumer
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var nodeFGs map[Channel]*queryNodeFlowGraph
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if loadPartition {
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nodeFGs, err = w.node.streaming.dataSyncService.getPartitionFlowGraphs(partitionID, vChannels)
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if err != nil {
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return err
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}
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} else {
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nodeFGs, err = w.node.streaming.dataSyncService.getCollectionFlowGraphs(collectionID, vChannels)
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if err != nil {
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return err
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}
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}
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for _, channel := range toSubChannels {
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for _, fg := range nodeFGs {
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if fg.channel == channel {
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// use pChannel to consume
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err := fg.consumerFlowGraph(VPChannels[channel], consumeSubName)
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if err != nil {
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errMsg := "msgStream consume error :" + err.Error()
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log.Warn(errMsg)
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return errors.New(errMsg)
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}
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}
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}
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}
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log.Debug("as consumer channels",
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zap.Any("collectionID", collectionID),
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zap.Any("toSubChannels", toSubChannels))
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// seek channel
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for _, pos := range toSeekChannels {
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for _, fg := range nodeFGs {
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if fg.channel == pos.ChannelName {
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pos.MsgGroup = consumeSubName
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// use pChannel to seek
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pos.ChannelName = VPChannels[fg.channel]
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err := fg.seekQueryNodeFlowGraph(pos)
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if err != nil {
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errMsg := "msgStream seek error :" + err.Error()
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log.Warn(errMsg)
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return errors.New(errMsg)
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}
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}
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}
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}
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log.Debug("seek all channel done",
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zap.Any("collectionID", collectionID),
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zap.Any("toSeekChannels", toSeekChannels))
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// start flow graphs
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if loadPartition {
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err = w.node.streaming.dataSyncService.startPartitionFlowGraph(partitionID, vChannels)
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if err != nil {
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return err
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}
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} else {
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err = w.node.streaming.dataSyncService.startCollectionFlowGraph(collectionID, vChannels)
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if err != nil {
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return err
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}
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}
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log.Debug("WatchDmChannels done", zap.String("ChannelIDs", fmt.Sprintln(vChannels)))
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return nil
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}
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func (w *watchDmChannelsTask) PostExecute(ctx context.Context) error {
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return nil
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}
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// loadSegmentsTask
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func (l *loadSegmentsTask) Timestamp() Timestamp {
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if l.req.Base == nil {
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log.Warn("nil base req in loadSegmentsTask")
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return 0
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}
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return l.req.Base.Timestamp
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}
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func (l *loadSegmentsTask) OnEnqueue() error {
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if l.req == nil || l.req.Base == nil {
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l.SetID(rand.Int63n(100000000000))
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} else {
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l.SetID(l.req.Base.MsgID)
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}
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return nil
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}
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func (l *loadSegmentsTask) PreExecute(ctx context.Context) error {
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return nil
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}
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func (l *loadSegmentsTask) Execute(ctx context.Context) error {
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// TODO: support db
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log.Debug("query node load segment", zap.String("loadSegmentRequest", fmt.Sprintln(l.req)))
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var err error
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// init meta
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for _, info := range l.req.Infos {
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collectionID := info.CollectionID
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partitionID := info.PartitionID
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hasCollectionInHistorical := l.node.historical.replica.hasCollection(collectionID)
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hasPartitionInHistorical := l.node.historical.replica.hasPartition(partitionID)
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if !hasCollectionInHistorical {
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err = l.node.historical.replica.addCollection(collectionID, l.req.Schema)
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if err != nil {
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return err
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}
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}
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if !hasPartitionInHistorical {
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err = l.node.historical.replica.addPartition(collectionID, partitionID)
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if err != nil {
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return err
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}
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}
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hasCollectionInStreaming := l.node.streaming.replica.hasCollection(collectionID)
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hasPartitionInStreaming := l.node.streaming.replica.hasPartition(partitionID)
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if !hasCollectionInStreaming {
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err = l.node.streaming.replica.addCollection(collectionID, l.req.Schema)
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if err != nil {
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return err
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}
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}
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if !hasPartitionInStreaming {
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err = l.node.streaming.replica.addPartition(collectionID, partitionID)
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if err != nil {
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return err
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}
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}
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}
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switch l.req.LoadCondition {
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case queryPb.TriggerCondition_handoff:
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err = l.node.historical.loader.loadSegmentOfConditionHandOff(l.req)
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case queryPb.TriggerCondition_loadBalance:
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err = l.node.historical.loader.loadSegmentOfConditionLoadBalance(l.req)
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case queryPb.TriggerCondition_grpcRequest:
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err = l.node.historical.loader.loadSegmentOfConditionGRPC(l.req)
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case queryPb.TriggerCondition_nodeDown:
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err = l.node.historical.loader.loadSegmentOfConditionNodeDown(l.req)
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}
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if err != nil {
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log.Warn(err.Error())
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return err
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}
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for _, info := range l.req.Infos {
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collectionID := info.CollectionID
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partitionID := info.PartitionID
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sCol, err := l.node.streaming.replica.getCollectionByID(collectionID)
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if err != nil {
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return err
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}
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sCol.deleteReleasedPartition(partitionID)
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hCol, err := l.node.historical.replica.getCollectionByID(collectionID)
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if err != nil {
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return err
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}
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hCol.deleteReleasedPartition(partitionID)
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}
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log.Debug("LoadSegments done", zap.String("SegmentLoadInfos", fmt.Sprintln(l.req.Infos)))
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return nil
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}
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func (l *loadSegmentsTask) PostExecute(ctx context.Context) error {
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return nil
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}
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// releaseCollectionTask
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func (r *releaseCollectionTask) Timestamp() Timestamp {
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if r.req.Base == nil {
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log.Warn("nil base req in releaseCollectionTask", zap.Any("collectionID", r.req.CollectionID))
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return 0
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}
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return r.req.Base.Timestamp
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}
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func (r *releaseCollectionTask) OnEnqueue() error {
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if r.req == nil || r.req.Base == nil {
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r.SetID(rand.Int63n(100000000000))
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} else {
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r.SetID(r.req.Base.MsgID)
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}
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return nil
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}
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func (r *releaseCollectionTask) PreExecute(ctx context.Context) error {
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return nil
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}
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func (r *releaseCollectionTask) Execute(ctx context.Context) error {
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log.Debug("receive release collection task", zap.Any("collectionID", r.req.CollectionID))
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errMsg := "release collection failed, collectionID = " + strconv.FormatInt(r.req.CollectionID, 10) + ", err = "
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collection, err := r.node.streaming.replica.getCollectionByID(r.req.CollectionID)
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if err != nil {
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err = errors.New(errMsg + err.Error())
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return err
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}
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// set release time
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collection.setReleaseTime(r.req.Base.Timestamp)
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// sleep to wait for query tasks done
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const gracefulReleaseTime = 1
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time.Sleep(gracefulReleaseTime * time.Second)
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log.Debug("starting release collection...",
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zap.Any("collectionID", r.req.CollectionID),
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)
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// remove collection flow graph
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r.node.streaming.dataSyncService.removeCollectionFlowGraph(r.req.CollectionID)
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// remove partition flow graphs which partitions belong to the target collection
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partitionIDs, err := r.node.streaming.replica.getPartitionIDs(r.req.CollectionID)
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if err != nil {
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err = errors.New(errMsg + err.Error())
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return err
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}
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for _, partitionID := range partitionIDs {
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r.node.streaming.dataSyncService.removePartitionFlowGraph(partitionID)
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}
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// remove all tSafes of the target collection
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for _, channel := range collection.getVChannels() {
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log.Debug("releasing tSafe in releaseCollectionTask...",
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zap.Any("collectionID", r.req.CollectionID),
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zap.Any("vChannel", channel),
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)
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// no tSafe in tSafeReplica, don't return error
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err = r.node.streaming.tSafeReplica.removeTSafe(channel)
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if err != nil {
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log.Warn(err.Error())
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}
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}
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// remove excludedSegments record
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r.node.streaming.replica.removeExcludedSegments(r.req.CollectionID)
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// remove query collection
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r.node.queryService.stopQueryCollection(r.req.CollectionID)
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// remove collection metas in streaming and historical
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hasCollectionInHistorical := r.node.historical.replica.hasCollection(r.req.CollectionID)
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if hasCollectionInHistorical {
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err = r.node.historical.replica.removeCollection(r.req.CollectionID)
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if err != nil {
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err = errors.New(errMsg + err.Error())
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return err
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}
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}
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hasCollectionInStreaming := r.node.streaming.replica.hasCollection(r.req.CollectionID)
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if hasCollectionInStreaming {
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err = r.node.streaming.replica.removeCollection(r.req.CollectionID)
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if err != nil {
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err = errors.New(errMsg + err.Error())
|
|
return err
|
|
}
|
|
}
|
|
|
|
// release global segment info
|
|
r.node.historical.removeGlobalSegmentIDsByCollectionID(r.req.CollectionID)
|
|
|
|
log.Debug("ReleaseCollection done", zap.Int64("collectionID", r.req.CollectionID))
|
|
return nil
|
|
}
|
|
|
|
func (r *releaseCollectionTask) PostExecute(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
|
|
// releasePartitionsTask
|
|
func (r *releasePartitionsTask) Timestamp() Timestamp {
|
|
if r.req.Base == nil {
|
|
log.Warn("nil base req in releasePartitionsTask", zap.Any("collectionID", r.req.CollectionID))
|
|
return 0
|
|
}
|
|
return r.req.Base.Timestamp
|
|
}
|
|
|
|
func (r *releasePartitionsTask) OnEnqueue() error {
|
|
if r.req == nil || r.req.Base == nil {
|
|
r.SetID(rand.Int63n(100000000000))
|
|
} else {
|
|
r.SetID(r.req.Base.MsgID)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *releasePartitionsTask) PreExecute(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
|
|
func (r *releasePartitionsTask) Execute(ctx context.Context) error {
|
|
log.Debug("receive release partition task",
|
|
zap.Any("collectionID", r.req.CollectionID),
|
|
zap.Any("partitionIDs", r.req.PartitionIDs))
|
|
errMsg := "release partitions failed, collectionID = " + strconv.FormatInt(r.req.CollectionID, 10) + ", err = "
|
|
|
|
// sleep to wait for query tasks done
|
|
const gracefulReleaseTime = 1
|
|
time.Sleep(gracefulReleaseTime * time.Second)
|
|
|
|
// get collection from streaming and historical
|
|
hCol, err := r.node.historical.replica.getCollectionByID(r.req.CollectionID)
|
|
if err != nil {
|
|
err = errors.New(errMsg + err.Error())
|
|
return err
|
|
}
|
|
sCol, err := r.node.streaming.replica.getCollectionByID(r.req.CollectionID)
|
|
if err != nil {
|
|
err = errors.New(errMsg + err.Error())
|
|
return err
|
|
}
|
|
|
|
// release partitions
|
|
vChannels := sCol.getVChannels()
|
|
for _, id := range r.req.PartitionIDs {
|
|
if _, err = r.node.streaming.dataSyncService.getPartitionFlowGraphs(id, vChannels); err == nil {
|
|
r.node.streaming.dataSyncService.removePartitionFlowGraph(id)
|
|
// remove all tSafes of the target partition
|
|
for _, channel := range vChannels {
|
|
log.Debug("releasing tSafe in releasePartitionTask...",
|
|
zap.Any("collectionID", r.req.CollectionID),
|
|
zap.Any("partitionID", id),
|
|
zap.Any("vChannel", channel),
|
|
)
|
|
// no tSafe in tSafeReplica, don't return error
|
|
err = r.node.streaming.tSafeReplica.removeTSafe(channel)
|
|
if err != nil {
|
|
log.Warn(err.Error())
|
|
}
|
|
}
|
|
}
|
|
|
|
// remove partition from streaming and historical
|
|
hasPartitionInHistorical := r.node.historical.replica.hasPartition(id)
|
|
if hasPartitionInHistorical {
|
|
err = r.node.historical.replica.removePartition(id)
|
|
if err != nil {
|
|
// not return, try to release all partitions
|
|
log.Warn(errMsg + err.Error())
|
|
}
|
|
}
|
|
hasPartitionInStreaming := r.node.streaming.replica.hasPartition(id)
|
|
if hasPartitionInStreaming {
|
|
err = r.node.streaming.replica.removePartition(id)
|
|
if err != nil {
|
|
// not return, try to release all partitions
|
|
log.Warn(errMsg + err.Error())
|
|
}
|
|
}
|
|
|
|
// add released partition record
|
|
hCol.addReleasedPartition(id)
|
|
sCol.addReleasedPartition(id)
|
|
}
|
|
|
|
// release global segment info
|
|
r.node.historical.removeGlobalSegmentIDsByPartitionIds(r.req.PartitionIDs)
|
|
|
|
log.Debug("release partition task done",
|
|
zap.Any("collectionID", r.req.CollectionID),
|
|
zap.Any("partitionIDs", r.req.PartitionIDs))
|
|
return nil
|
|
}
|
|
|
|
func (r *releasePartitionsTask) PostExecute(ctx context.Context) error {
|
|
return nil
|
|
}
|