2023-01-04 19:37:36 +08:00
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// 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 datacoord
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import (
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"context"
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"path"
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"sync"
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"time"
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2023-02-26 11:31:49 +08:00
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"github.com/cockroachdb/errors"
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2023-01-04 19:37:36 +08:00
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"go.uber.org/zap"
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"github.com/milvus-io/milvus-proto/go-api/commonpb"
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"github.com/milvus-io/milvus/internal/common"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/indexpb"
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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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)
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type indexTaskState int32
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const (
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// when we receive a index task
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indexTaskInit indexTaskState = iota
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// we've sent index task to scheduler, and wait for building index.
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indexTaskInProgress
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// task done, wait to be cleaned
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indexTaskDone
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// index task need to retry.
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indexTaskRetry
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// task has been deleted.
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indexTaskDeleted
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// task needs to prepare segment info on IndexNode
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indexTaskPrepare
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reqTimeoutInterval = time.Second * 10
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)
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var TaskStateNames = map[indexTaskState]string{
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0: "Init",
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1: "InProgress",
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2: "Done",
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3: "Retry",
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4: "Deleted",
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5: "Prepare",
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}
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func (x indexTaskState) String() string {
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ret, ok := TaskStateNames[x]
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if !ok {
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return "None"
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}
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return ret
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}
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type indexBuilder struct {
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ctx context.Context
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cancel context.CancelFunc
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wg sync.WaitGroup
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taskMutex sync.RWMutex
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scheduleDuration time.Duration
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// TODO @xiaocai2333: use priority queue
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tasks map[int64]indexTaskState
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notifyChan chan struct{}
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meta *meta
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policy buildIndexPolicy
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nodeManager *IndexNodeManager
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chunkManager storage.ChunkManager
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}
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func newIndexBuilder(ctx context.Context, metaTable *meta, nodeManager *IndexNodeManager, chunkManager storage.ChunkManager) *indexBuilder {
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ctx, cancel := context.WithCancel(ctx)
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ib := &indexBuilder{
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ctx: ctx,
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cancel: cancel,
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meta: metaTable,
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tasks: make(map[int64]indexTaskState),
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notifyChan: make(chan struct{}, 1),
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2023-02-05 17:21:53 +08:00
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scheduleDuration: Params.DataCoordCfg.IndexTaskSchedulerInterval.GetAsDuration(time.Millisecond),
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2023-01-04 19:37:36 +08:00
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policy: defaultBuildIndexPolicy,
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nodeManager: nodeManager,
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chunkManager: chunkManager,
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}
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ib.reloadFromKV()
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return ib
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}
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func (ib *indexBuilder) Start() {
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ib.wg.Add(1)
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go ib.schedule()
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}
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func (ib *indexBuilder) Stop() {
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ib.cancel()
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ib.wg.Wait()
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}
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func (ib *indexBuilder) reloadFromKV() {
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segments := ib.meta.GetAllSegmentsUnsafe()
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for _, segment := range segments {
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for _, segIndex := range segment.segmentIndexes {
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if segIndex.IndexState == commonpb.IndexState_Unissued {
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ib.tasks[segIndex.BuildID] = indexTaskInit
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} else if segIndex.IndexState == commonpb.IndexState_InProgress {
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ib.tasks[segIndex.BuildID] = indexTaskInProgress
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}
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}
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}
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}
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// notify is an unblocked notify function
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func (ib *indexBuilder) notify() {
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select {
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case ib.notifyChan <- struct{}{}:
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default:
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}
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}
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func (ib *indexBuilder) enqueue(buildID UniqueID) {
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defer ib.notify()
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ib.taskMutex.Lock()
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defer ib.taskMutex.Unlock()
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if _, ok := ib.tasks[buildID]; !ok {
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ib.tasks[buildID] = indexTaskInit
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}
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log.Info("indexBuilder enqueue task", zap.Int64("buildID", buildID))
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}
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func (ib *indexBuilder) schedule() {
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// receive notifyChan
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// time ticker
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log.Ctx(ib.ctx).Info("index builder schedule loop start")
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defer ib.wg.Done()
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ticker := time.NewTicker(ib.scheduleDuration)
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defer ticker.Stop()
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for {
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select {
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case <-ib.ctx.Done():
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log.Ctx(ib.ctx).Warn("index builder ctx done")
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return
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case _, ok := <-ib.notifyChan:
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if ok {
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ib.run()
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}
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// !ok means indexBuild is closed.
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case <-ticker.C:
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ib.run()
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}
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}
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}
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func (ib *indexBuilder) run() {
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ib.taskMutex.RLock()
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buildIDs := make([]UniqueID, 0, len(ib.tasks))
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for tID := range ib.tasks {
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buildIDs = append(buildIDs, tID)
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}
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ib.taskMutex.RUnlock()
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if len(buildIDs) > 0 {
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log.Ctx(ib.ctx).Info("index builder task schedule", zap.Int("task num", len(buildIDs)))
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}
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ib.policy(buildIDs)
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for _, buildID := range buildIDs {
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ok := ib.process(buildID)
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if !ok {
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log.Ctx(ib.ctx).Info("there is no IndexNode available or etcd is not serviceable, wait a minute...")
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break
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}
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}
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}
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func (ib *indexBuilder) process(buildID UniqueID) bool {
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ib.taskMutex.RLock()
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state := ib.tasks[buildID]
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ib.taskMutex.RUnlock()
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updateStateFunc := func(buildID UniqueID, state indexTaskState) {
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ib.taskMutex.Lock()
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defer ib.taskMutex.Unlock()
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ib.tasks[buildID] = state
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}
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deleteFunc := func(buildID UniqueID) {
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ib.taskMutex.Lock()
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defer ib.taskMutex.Unlock()
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delete(ib.tasks, buildID)
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}
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meta, exist := ib.meta.GetIndexJob(buildID)
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if !exist {
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log.Ctx(ib.ctx).Debug("index task has not exist in meta table, remove task", zap.Int64("buildID", buildID))
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deleteFunc(buildID)
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return true
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}
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switch state {
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case indexTaskInit:
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segment := ib.meta.GetSegmentUnsafe(meta.SegmentID)
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if !isSegmentHealthy(segment) || !ib.meta.IsIndexExist(meta.CollectionID, meta.IndexID) {
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log.Ctx(ib.ctx).Info("task is no need to build index, remove it", zap.Int64("buildID", buildID))
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deleteFunc(buildID)
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return true
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}
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indexParams := ib.meta.GetIndexParams(meta.CollectionID, meta.IndexID)
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if isFlatIndex(getIndexType(indexParams)) || meta.NumRows < Params.DataCoordCfg.MinSegmentNumRowsToEnableIndex.GetAsInt64() {
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log.Ctx(ib.ctx).Debug("segment does not need index really", zap.Int64("buildID", buildID),
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zap.Int64("segID", meta.SegmentID), zap.Int64("num rows", meta.NumRows))
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if err := ib.meta.FinishTask(&indexpb.IndexTaskInfo{
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BuildID: buildID,
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State: commonpb.IndexState_Finished,
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IndexFileKeys: nil,
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SerializedSize: 0,
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FailReason: "",
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}); err != nil {
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log.Ctx(ib.ctx).Warn("IndexCoord update index state fail", zap.Int64("buildID", buildID), zap.Error(err))
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return false
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}
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updateStateFunc(buildID, indexTaskDone)
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return true
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}
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// peek client
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// if all IndexNodes are executing task, wait for one of them to finish the task.
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nodeID, client := ib.nodeManager.PeekClient(meta)
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if client == nil {
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log.Ctx(ib.ctx).RatedInfo(5, "index builder peek client error, there is no available")
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return false
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}
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// update version and set nodeID
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if err := ib.meta.UpdateVersion(buildID, nodeID); err != nil {
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log.Ctx(ib.ctx).Warn("index builder update index version failed", zap.Int64("build", buildID), zap.Error(err))
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return false
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}
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binLogs := make([]string, 0)
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fieldID := ib.meta.GetFieldIDByIndexID(meta.CollectionID, meta.IndexID)
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for _, fieldBinLog := range segment.GetBinlogs() {
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if fieldBinLog.GetFieldID() == fieldID {
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for _, binLog := range fieldBinLog.GetBinlogs() {
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binLogs = append(binLogs, binLog.LogPath)
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}
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break
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}
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}
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typeParams := ib.meta.GetTypeParams(meta.CollectionID, meta.IndexID)
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var storageConfig *indexpb.StorageConfig
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if Params.CommonCfg.StorageType.GetValue() == "local" {
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storageConfig = &indexpb.StorageConfig{
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RootPath: Params.LocalStorageCfg.Path.GetValue(),
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StorageType: Params.CommonCfg.StorageType.GetValue(),
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}
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} else {
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storageConfig = &indexpb.StorageConfig{
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Address: Params.MinioCfg.Address.GetValue(),
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AccessKeyID: Params.MinioCfg.AccessKeyID.GetValue(),
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SecretAccessKey: Params.MinioCfg.SecretAccessKey.GetValue(),
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UseSSL: Params.MinioCfg.UseSSL.GetAsBool(),
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BucketName: Params.MinioCfg.BucketName.GetValue(),
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RootPath: Params.MinioCfg.RootPath.GetValue(),
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UseIAM: Params.MinioCfg.UseIAM.GetAsBool(),
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IAMEndpoint: Params.MinioCfg.IAMEndpoint.GetValue(),
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StorageType: Params.CommonCfg.StorageType.GetValue(),
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}
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}
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req := &indexpb.CreateJobRequest{
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ClusterID: Params.CommonCfg.ClusterPrefix.GetValue(),
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IndexFilePrefix: path.Join(ib.chunkManager.RootPath(), common.SegmentIndexPath),
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BuildID: buildID,
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DataPaths: binLogs,
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IndexVersion: meta.IndexVersion + 1,
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StorageConfig: storageConfig,
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IndexParams: indexParams,
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TypeParams: typeParams,
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NumRows: meta.NumRows,
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}
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if err := ib.assignTask(client, req); err != nil {
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// need to release lock then reassign, so set task state to retry
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log.Ctx(ib.ctx).Warn("index builder assign task to IndexNode failed", zap.Int64("buildID", buildID),
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zap.Int64("nodeID", nodeID), zap.Error(err))
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updateStateFunc(buildID, indexTaskRetry)
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return false
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}
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log.Ctx(ib.ctx).Info("index task assigned successfully", zap.Int64("buildID", buildID),
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zap.Int64("segID", meta.SegmentID), zap.Int64("nodeID", nodeID))
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// update index meta state to InProgress
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if err := ib.meta.BuildIndex(buildID); err != nil {
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// need to release lock then reassign, so set task state to retry
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log.Ctx(ib.ctx).Warn("index builder update index meta to InProgress failed", zap.Int64("buildID", buildID),
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zap.Int64("nodeID", nodeID), zap.Error(err))
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updateStateFunc(buildID, indexTaskRetry)
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return false
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}
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updateStateFunc(buildID, indexTaskInProgress)
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case indexTaskDone:
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if !ib.dropIndexTask(buildID, meta.NodeID) {
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return true
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}
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deleteFunc(buildID)
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case indexTaskRetry:
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if !ib.dropIndexTask(buildID, meta.NodeID) {
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return true
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}
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updateStateFunc(buildID, indexTaskInit)
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case indexTaskDeleted:
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deleteFunc(buildID)
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default:
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// state: in_progress
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updateStateFunc(buildID, ib.getTaskState(buildID, meta.NodeID))
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}
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return true
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}
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func (ib *indexBuilder) getTaskState(buildID, nodeID UniqueID) indexTaskState {
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client, exist := ib.nodeManager.GetClientByID(nodeID)
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if exist {
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ctx1, cancel := context.WithTimeout(ib.ctx, reqTimeoutInterval)
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defer cancel()
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response, err := client.QueryJobs(ctx1, &indexpb.QueryJobsRequest{
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ClusterID: Params.CommonCfg.ClusterPrefix.GetValue(),
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BuildIDs: []int64{buildID},
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})
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if err != nil {
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log.Ctx(ib.ctx).Warn("IndexCoord get jobs info from IndexNode fail", zap.Int64("nodeID", nodeID),
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zap.Error(err))
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return indexTaskInProgress
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}
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if response.Status.ErrorCode != commonpb.ErrorCode_Success {
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log.Ctx(ib.ctx).Warn("IndexCoord get jobs info from IndexNode fail", zap.Int64("nodeID", nodeID),
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zap.Int64("buildID", buildID), zap.String("fail reason", response.Status.Reason))
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return indexTaskInProgress
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}
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// indexInfos length is always one.
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for _, info := range response.IndexInfos {
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if info.BuildID == buildID {
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if info.State == commonpb.IndexState_Failed || info.State == commonpb.IndexState_Finished {
|
|
|
|
log.Ctx(ib.ctx).Info("this task has been finished", zap.Int64("buildID", info.BuildID),
|
|
|
|
zap.String("index state", info.State.String()))
|
|
|
|
if err := ib.meta.FinishTask(info); err != nil {
|
|
|
|
log.Ctx(ib.ctx).Warn("IndexCoord update index state fail", zap.Int64("buildID", info.BuildID),
|
|
|
|
zap.String("index state", info.State.String()), zap.Error(err))
|
|
|
|
return indexTaskInProgress
|
|
|
|
}
|
|
|
|
return indexTaskDone
|
|
|
|
} else if info.State == commonpb.IndexState_Retry || info.State == commonpb.IndexState_IndexStateNone {
|
|
|
|
log.Ctx(ib.ctx).Info("this task should be retry", zap.Int64("buildID", buildID), zap.String("fail reason", info.FailReason))
|
|
|
|
return indexTaskRetry
|
|
|
|
}
|
|
|
|
return indexTaskInProgress
|
|
|
|
}
|
|
|
|
}
|
|
|
|
log.Ctx(ib.ctx).Info("this task should be retry, indexNode does not have this task", zap.Int64("buildID", buildID),
|
|
|
|
zap.Int64("nodeID", nodeID))
|
|
|
|
return indexTaskRetry
|
|
|
|
}
|
|
|
|
// !exist --> node down
|
|
|
|
log.Ctx(ib.ctx).Info("this task should be retry, indexNode is no longer exist", zap.Int64("buildID", buildID),
|
|
|
|
zap.Int64("nodeID", nodeID))
|
|
|
|
return indexTaskRetry
|
|
|
|
}
|
|
|
|
|
|
|
|
func (ib *indexBuilder) dropIndexTask(buildID, nodeID UniqueID) bool {
|
|
|
|
client, exist := ib.nodeManager.GetClientByID(nodeID)
|
|
|
|
if exist {
|
|
|
|
ctx1, cancel := context.WithTimeout(ib.ctx, reqTimeoutInterval)
|
|
|
|
defer cancel()
|
|
|
|
status, err := client.DropJobs(ctx1, &indexpb.DropJobsRequest{
|
|
|
|
ClusterID: Params.CommonCfg.ClusterPrefix.GetValue(),
|
|
|
|
BuildIDs: []UniqueID{buildID},
|
|
|
|
})
|
|
|
|
if err != nil {
|
|
|
|
log.Ctx(ib.ctx).Warn("IndexCoord notify IndexNode drop the index task fail", zap.Int64("buildID", buildID),
|
|
|
|
zap.Int64("nodeID", nodeID), zap.Error(err))
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
if status.ErrorCode != commonpb.ErrorCode_Success {
|
|
|
|
log.Ctx(ib.ctx).Warn("IndexCoord notify IndexNode drop the index task fail", zap.Int64("buildID", buildID),
|
|
|
|
zap.Int64("nodeID", nodeID), zap.String("fail reason", status.Reason))
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
log.Ctx(ib.ctx).Info("IndexCoord notify IndexNode drop the index task success",
|
|
|
|
zap.Int64("buildID", buildID), zap.Int64("nodeID", nodeID))
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
log.Ctx(ib.ctx).Info("IndexNode no longer exist, no need to drop index task",
|
|
|
|
zap.Int64("buildID", buildID), zap.Int64("nodeID", nodeID))
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
|
|
|
|
// assignTask sends the index task to the IndexNode, it has a timeout interval, if the IndexNode doesn't respond within
|
|
|
|
// the interval, it is considered that the task sending failed.
|
|
|
|
func (ib *indexBuilder) assignTask(builderClient types.IndexNode, req *indexpb.CreateJobRequest) error {
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), reqTimeoutInterval)
|
|
|
|
defer cancel()
|
|
|
|
resp, err := builderClient.CreateJob(ctx, req)
|
|
|
|
if err != nil {
|
|
|
|
log.Error("IndexCoord assignmentTasksLoop builderClient.CreateIndex failed", zap.Error(err))
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
if resp.ErrorCode != commonpb.ErrorCode_Success {
|
|
|
|
log.Error("IndexCoord assignmentTasksLoop builderClient.CreateIndex failed", zap.String("Reason", resp.Reason))
|
|
|
|
return errors.New(resp.Reason)
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (ib *indexBuilder) nodeDown(nodeID UniqueID) {
|
|
|
|
defer ib.notify()
|
|
|
|
|
|
|
|
metas := ib.meta.GetMetasByNodeID(nodeID)
|
|
|
|
|
|
|
|
ib.taskMutex.Lock()
|
|
|
|
defer ib.taskMutex.Unlock()
|
|
|
|
|
|
|
|
for _, meta := range metas {
|
|
|
|
if ib.tasks[meta.BuildID] != indexTaskDone {
|
|
|
|
ib.tasks[meta.BuildID] = indexTaskRetry
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|