mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-11 09:46:26 +08:00
1006 lines
31 KiB
Go
1006 lines
31 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 querycoord
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import (
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"container/list"
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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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"github.com/opentracing/opentracing-go"
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"go.uber.org/zap"
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etcdkv "github.com/milvus-io/milvus/internal/kv/etcd"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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"github.com/milvus-io/milvus/internal/proto/querypb"
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"github.com/milvus-io/milvus/internal/types"
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"github.com/milvus-io/milvus/internal/util/retry"
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"github.com/milvus-io/milvus/internal/util/trace"
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oplog "github.com/opentracing/opentracing-go/log"
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)
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// TaskQueue is used to cache triggerTasks
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type TaskQueue struct {
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tasks *list.List
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maxTask int64
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taskChan chan int // to block scheduler
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sync.Mutex
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}
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// Chan returns the taskChan of taskQueue
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func (queue *TaskQueue) Chan() <-chan int {
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return queue.taskChan
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}
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func (queue *TaskQueue) taskEmpty() bool {
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queue.Lock()
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defer queue.Unlock()
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return queue.tasks.Len() == 0
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}
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func (queue *TaskQueue) taskFull() bool {
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return int64(queue.tasks.Len()) >= queue.maxTask
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}
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func (queue *TaskQueue) addTask(t task) {
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queue.Lock()
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defer queue.Unlock()
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if queue.tasks.Len() == 0 {
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queue.taskChan <- 1
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queue.tasks.PushBack(t)
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return
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}
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for e := queue.tasks.Back(); e != nil; e = e.Prev() {
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if t.taskPriority() > e.Value.(task).taskPriority() {
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if e.Prev() == nil {
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queue.taskChan <- 1
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queue.tasks.InsertBefore(t, e)
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break
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}
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continue
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}
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//TODO:: take care of timestamp
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queue.taskChan <- 1
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queue.tasks.InsertAfter(t, e)
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break
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}
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}
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func (queue *TaskQueue) addTaskToFront(t task) {
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queue.taskChan <- 1
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if queue.tasks.Len() == 0 {
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queue.tasks.PushBack(t)
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} else {
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queue.tasks.PushFront(t)
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}
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}
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// PopTask pops a trigger task from task list
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func (queue *TaskQueue) popTask() task {
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queue.Lock()
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defer queue.Unlock()
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if queue.tasks.Len() <= 0 {
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log.Warn("sorry, but the unissued task list is empty!")
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return nil
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}
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ft := queue.tasks.Front()
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queue.tasks.Remove(ft)
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return ft.Value.(task)
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}
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// NewTaskQueue creates a new task queue for scheduler to cache trigger tasks
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func NewTaskQueue() *TaskQueue {
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return &TaskQueue{
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tasks: list.New(),
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maxTask: 1024,
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taskChan: make(chan int, 1024),
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}
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}
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// TaskScheduler controls the scheduling of trigger tasks and internal tasks
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type TaskScheduler struct {
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triggerTaskQueue *TaskQueue
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activateTaskChan chan task
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meta Meta
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cluster Cluster
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taskIDAllocator func() (UniqueID, error)
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client *etcdkv.EtcdKV
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stopActivateTaskLoopChan chan int
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rootCoord types.RootCoord
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dataCoord types.DataCoord
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wg sync.WaitGroup
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ctx context.Context
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cancel context.CancelFunc
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}
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// NewTaskScheduler reloads tasks from kv and returns a new taskScheduler
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func NewTaskScheduler(ctx context.Context,
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meta Meta,
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cluster Cluster,
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kv *etcdkv.EtcdKV,
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rootCoord types.RootCoord,
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dataCoord types.DataCoord,
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idAllocator func() (UniqueID, error)) (*TaskScheduler, error) {
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ctx1, cancel := context.WithCancel(ctx)
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taskChan := make(chan task, 1024)
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stopTaskLoopChan := make(chan int, 1)
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s := &TaskScheduler{
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ctx: ctx1,
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cancel: cancel,
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meta: meta,
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cluster: cluster,
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taskIDAllocator: idAllocator,
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activateTaskChan: taskChan,
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client: kv,
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stopActivateTaskLoopChan: stopTaskLoopChan,
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rootCoord: rootCoord,
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dataCoord: dataCoord,
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}
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s.triggerTaskQueue = NewTaskQueue()
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err := s.reloadFromKV()
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if err != nil {
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log.Error("reload task from kv failed", zap.Error(err))
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return nil, err
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}
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return s, nil
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}
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func (scheduler *TaskScheduler) reloadFromKV() error {
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triggerTaskIDKeys, triggerTaskValues, err := scheduler.client.LoadWithPrefix(triggerTaskPrefix)
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if err != nil {
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return err
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}
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activeTaskIDKeys, activeTaskValues, err := scheduler.client.LoadWithPrefix(activeTaskPrefix)
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if err != nil {
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return err
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}
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taskInfoKeys, taskInfoValues, err := scheduler.client.LoadWithPrefix(taskInfoPrefix)
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if err != nil {
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return err
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}
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triggerTasks := make(map[int64]task)
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for index := range triggerTaskIDKeys {
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taskID, err := strconv.ParseInt(filepath.Base(triggerTaskIDKeys[index]), 10, 64)
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if err != nil {
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return err
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}
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t, err := scheduler.unmarshalTask(taskID, triggerTaskValues[index])
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if err != nil {
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return err
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}
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triggerTasks[taskID] = t
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}
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activeTasks := make(map[int64]task)
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for index := range activeTaskIDKeys {
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taskID, err := strconv.ParseInt(filepath.Base(activeTaskIDKeys[index]), 10, 64)
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if err != nil {
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return err
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}
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t, err := scheduler.unmarshalTask(taskID, activeTaskValues[index])
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if err != nil {
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return err
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}
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activeTasks[taskID] = t
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}
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taskInfos := make(map[int64]taskState)
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for index := range taskInfoKeys {
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taskID, err := strconv.ParseInt(filepath.Base(taskInfoKeys[index]), 10, 64)
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if err != nil {
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return err
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}
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value, err := strconv.ParseInt(taskInfoValues[index], 10, 64)
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if err != nil {
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return err
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}
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state := taskState(value)
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taskInfos[taskID] = state
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if _, ok := triggerTasks[taskID]; !ok {
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log.Error("reloadFromKV: taskStateInfo and triggerTaskInfo are inconsistent")
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continue
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}
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triggerTasks[taskID].setState(state)
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}
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var doneTriggerTask task = nil
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for _, t := range triggerTasks {
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if t.getState() == taskDone {
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doneTriggerTask = t
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for _, childTask := range activeTasks {
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childTask.setParentTask(t) //replace child task after reScheduler
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t.addChildTask(childTask)
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}
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t.setResultInfo(nil)
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continue
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}
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scheduler.triggerTaskQueue.addTask(t)
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}
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if doneTriggerTask != nil {
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scheduler.triggerTaskQueue.addTaskToFront(doneTriggerTask)
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}
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return nil
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}
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func (scheduler *TaskScheduler) unmarshalTask(taskID UniqueID, t string) (task, error) {
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header := commonpb.MsgHeader{}
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err := proto.Unmarshal([]byte(t), &header)
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if err != nil {
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return nil, fmt.Errorf("Failed to unmarshal message header, err %s ", err.Error())
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}
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var newTask task
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baseTask := newBaseTask(scheduler.ctx, querypb.TriggerCondition_grpcRequest)
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switch header.Base.MsgType {
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case commonpb.MsgType_LoadCollection:
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loadReq := querypb.LoadCollectionRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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loadCollectionTask := &loadCollectionTask{
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baseTask: baseTask,
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LoadCollectionRequest: &loadReq,
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rootCoord: scheduler.rootCoord,
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dataCoord: scheduler.dataCoord,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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}
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newTask = loadCollectionTask
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case commonpb.MsgType_LoadPartitions:
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loadReq := querypb.LoadPartitionsRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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loadPartitionTask := &loadPartitionTask{
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baseTask: baseTask,
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LoadPartitionsRequest: &loadReq,
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dataCoord: scheduler.dataCoord,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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}
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newTask = loadPartitionTask
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case commonpb.MsgType_ReleaseCollection:
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loadReq := querypb.ReleaseCollectionRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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releaseCollectionTask := &releaseCollectionTask{
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baseTask: baseTask,
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ReleaseCollectionRequest: &loadReq,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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rootCoord: scheduler.rootCoord,
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}
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newTask = releaseCollectionTask
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case commonpb.MsgType_ReleasePartitions:
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loadReq := querypb.ReleasePartitionsRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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releasePartitionTask := &releasePartitionTask{
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baseTask: baseTask,
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ReleasePartitionsRequest: &loadReq,
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cluster: scheduler.cluster,
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}
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newTask = releasePartitionTask
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case commonpb.MsgType_LoadSegments:
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//TODO::trigger condition may be different
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loadReq := querypb.LoadSegmentsRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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loadSegmentTask := &loadSegmentTask{
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baseTask: baseTask,
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LoadSegmentsRequest: &loadReq,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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excludeNodeIDs: []int64{},
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}
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newTask = loadSegmentTask
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case commonpb.MsgType_ReleaseSegments:
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//TODO::trigger condition may be different
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loadReq := querypb.ReleaseSegmentsRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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releaseSegmentTask := &releaseSegmentTask{
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baseTask: baseTask,
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ReleaseSegmentsRequest: &loadReq,
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cluster: scheduler.cluster,
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}
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newTask = releaseSegmentTask
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case commonpb.MsgType_WatchDmChannels:
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//TODO::trigger condition may be different
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loadReq := querypb.WatchDmChannelsRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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watchDmChannelTask := &watchDmChannelTask{
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baseTask: baseTask,
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WatchDmChannelsRequest: &loadReq,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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excludeNodeIDs: []int64{},
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}
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newTask = watchDmChannelTask
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case commonpb.MsgType_WatchDeltaChannels:
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//TODO::trigger condition may be different
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loadReq := querypb.WatchDeltaChannelsRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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watchDeltaChannelTask := &watchDeltaChannelTask{
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baseTask: baseTask,
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WatchDeltaChannelsRequest: &loadReq,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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excludeNodeIDs: []int64{},
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}
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newTask = watchDeltaChannelTask
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case commonpb.MsgType_WatchQueryChannels:
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//TODO::trigger condition may be different
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loadReq := querypb.AddQueryChannelRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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watchQueryChannelTask := &watchQueryChannelTask{
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baseTask: baseTask,
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AddQueryChannelRequest: &loadReq,
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cluster: scheduler.cluster,
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}
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newTask = watchQueryChannelTask
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case commonpb.MsgType_LoadBalanceSegments:
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//TODO::trigger condition may be different
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loadReq := querypb.LoadBalanceRequest{}
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err = proto.Unmarshal([]byte(t), &loadReq)
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if err != nil {
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return nil, err
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}
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loadBalanceTask := &loadBalanceTask{
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baseTask: baseTask,
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LoadBalanceRequest: &loadReq,
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rootCoord: scheduler.rootCoord,
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dataCoord: scheduler.dataCoord,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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}
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newTask = loadBalanceTask
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case commonpb.MsgType_HandoffSegments:
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handoffReq := querypb.HandoffSegmentsRequest{}
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err = proto.Unmarshal([]byte(t), &handoffReq)
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if err != nil {
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return nil, err
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}
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handoffTask := &handoffTask{
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baseTask: baseTask,
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HandoffSegmentsRequest: &handoffReq,
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dataCoord: scheduler.dataCoord,
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cluster: scheduler.cluster,
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meta: scheduler.meta,
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}
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newTask = handoffTask
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default:
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err = errors.New("inValid msg type when unMarshal task")
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log.Error(err.Error())
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return nil, err
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}
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newTask.setTaskID(taskID)
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return newTask, nil
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}
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// Enqueue pushs a trigger task to triggerTaskQueue and assigns task id
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func (scheduler *TaskScheduler) Enqueue(t task) error {
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id, err := scheduler.taskIDAllocator()
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if err != nil {
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log.Error("allocator trigger taskID failed", zap.Error(err))
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return err
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}
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t.setTaskID(id)
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kvs := make(map[string]string)
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taskKey := fmt.Sprintf("%s/%d", triggerTaskPrefix, t.getTaskID())
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blobs, err := t.marshal()
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if err != nil {
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log.Error("error when save marshal task", zap.Int64("taskID", t.getTaskID()), zap.Error(err))
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return err
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}
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kvs[taskKey] = string(blobs)
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stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, t.getTaskID())
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kvs[stateKey] = strconv.Itoa(int(taskUndo))
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err = scheduler.client.MultiSave(kvs)
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if err != nil {
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//TODO::clean etcd meta
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log.Error("error when save trigger task to etcd", zap.Int64("taskID", t.getTaskID()), zap.Error(err))
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return err
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}
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t.setState(taskUndo)
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scheduler.triggerTaskQueue.addTask(t)
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log.Debug("EnQueue a triggerTask and save to etcd", zap.Int64("taskID", t.getTaskID()))
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return nil
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}
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func (scheduler *TaskScheduler) processTask(t task) error {
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var taskInfoKey string
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// assign taskID for childTask and update triggerTask's childTask to etcd
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updateKVFn := func(parentTask task) error {
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// TODO:: if childTask.type == loadSegment, then only save segmentID to etcd instead of binlog paths
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// The binlog paths of each segment will be written into etcd in advance
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// The binlog paths will be filled in through etcd when load segment grpc is called
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for _, childTask := range parentTask.getChildTask() {
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kvs := make(map[string]string)
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id, err := scheduler.taskIDAllocator()
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if err != nil {
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return err
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}
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childTask.setTaskID(id)
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childTaskKey := fmt.Sprintf("%s/%d", activeTaskPrefix, childTask.getTaskID())
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var protoSize int
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switch childTask.msgType() {
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case commonpb.MsgType_LoadSegments:
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protoSize = proto.Size(childTask.(*loadSegmentTask).LoadSegmentsRequest)
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case commonpb.MsgType_WatchDmChannels:
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protoSize = proto.Size(childTask.(*watchDmChannelTask).WatchDmChannelsRequest)
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case commonpb.MsgType_WatchDeltaChannels:
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protoSize = proto.Size(childTask.(*watchDeltaChannelTask).WatchDeltaChannelsRequest)
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case commonpb.MsgType_WatchQueryChannels:
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protoSize = proto.Size(childTask.(*watchQueryChannelTask).AddQueryChannelRequest)
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default:
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//TODO::
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}
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log.Debug("updateKVFn: the size of internal request", zap.Int("size", protoSize), zap.Int64("taskID", childTask.getTaskID()))
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blobs, err := childTask.marshal()
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if err != nil {
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return err
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}
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kvs[childTaskKey] = string(blobs)
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stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, childTask.getTaskID())
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kvs[stateKey] = strconv.Itoa(int(taskUndo))
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err = scheduler.client.MultiSave(kvs)
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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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parentInfoKey := fmt.Sprintf("%s/%d", taskInfoPrefix, parentTask.getTaskID())
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err := scheduler.client.Save(parentInfoKey, strconv.Itoa(int(taskDone)))
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if err != nil {
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return err
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}
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return nil
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}
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span, ctx := trace.StartSpanFromContext(t.traceCtx(),
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opentracing.Tags{
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"Type": t.msgType(),
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"ID": t.getTaskID(),
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})
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var err error
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defer span.Finish()
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defer func() {
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//task postExecute
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span.LogFields(oplog.Int64("processTask: scheduler process PostExecute", t.getTaskID()))
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t.postExecute(ctx)
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}()
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// task preExecute
|
|
span.LogFields(oplog.Int64("processTask: scheduler process PreExecute", t.getTaskID()))
|
|
t.preExecute(ctx)
|
|
taskInfoKey = fmt.Sprintf("%s/%d", taskInfoPrefix, t.getTaskID())
|
|
err = scheduler.client.Save(taskInfoKey, strconv.Itoa(int(taskDoing)))
|
|
if err != nil {
|
|
trace.LogError(span, err)
|
|
t.setResultInfo(err)
|
|
return err
|
|
}
|
|
t.setState(taskDoing)
|
|
|
|
// task execute
|
|
span.LogFields(oplog.Int64("processTask: scheduler process Execute", t.getTaskID()))
|
|
err = t.execute(ctx)
|
|
if err != nil {
|
|
trace.LogError(span, err)
|
|
return err
|
|
}
|
|
err = updateKVFn(t)
|
|
if err != nil {
|
|
trace.LogError(span, err)
|
|
t.setResultInfo(err)
|
|
return err
|
|
}
|
|
log.Debug("processTask: update etcd success", zap.Int64("parent taskID", t.getTaskID()))
|
|
if t.msgType() == commonpb.MsgType_LoadCollection || t.msgType() == commonpb.MsgType_LoadPartitions {
|
|
t.notify(nil)
|
|
}
|
|
|
|
t.setState(taskDone)
|
|
t.updateTaskProcess()
|
|
|
|
return nil
|
|
}
|
|
|
|
func (scheduler *TaskScheduler) scheduleLoop() {
|
|
defer scheduler.wg.Done()
|
|
activeTaskWg := &sync.WaitGroup{}
|
|
var triggerTask task
|
|
|
|
processInternalTaskFn := func(activateTasks []task, triggerTask task) {
|
|
log.Debug("scheduleLoop: num of child task", zap.Int("num child task", len(activateTasks)))
|
|
for _, childTask := range activateTasks {
|
|
if childTask != nil {
|
|
log.Debug("scheduleLoop: add a activate task to activateChan", zap.Int64("taskID", childTask.getTaskID()))
|
|
scheduler.activateTaskChan <- childTask
|
|
activeTaskWg.Add(1)
|
|
go scheduler.waitActivateTaskDone(activeTaskWg, childTask, triggerTask)
|
|
}
|
|
}
|
|
activeTaskWg.Wait()
|
|
}
|
|
|
|
rollBackInterTaskFn := func(triggerTask task, originInternalTasks []task, rollBackTasks []task) error {
|
|
saves := make(map[string]string)
|
|
removes := make([]string, 0)
|
|
childTaskIDs := make([]int64, 0)
|
|
for _, t := range originInternalTasks {
|
|
childTaskIDs = append(childTaskIDs, t.getTaskID())
|
|
taskKey := fmt.Sprintf("%s/%d", activeTaskPrefix, t.getTaskID())
|
|
removes = append(removes, taskKey)
|
|
stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, t.getTaskID())
|
|
removes = append(removes, stateKey)
|
|
}
|
|
|
|
for _, t := range rollBackTasks {
|
|
id, err := scheduler.taskIDAllocator()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
t.setTaskID(id)
|
|
taskKey := fmt.Sprintf("%s/%d", activeTaskPrefix, t.getTaskID())
|
|
blobs, err := t.marshal()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
saves[taskKey] = string(blobs)
|
|
stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, t.getTaskID())
|
|
saves[stateKey] = strconv.Itoa(int(taskUndo))
|
|
}
|
|
|
|
err := scheduler.client.MultiSaveAndRemove(saves, removes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, taskID := range childTaskIDs {
|
|
triggerTask.removeChildTaskByID(taskID)
|
|
}
|
|
for _, t := range rollBackTasks {
|
|
triggerTask.addChildTask(t)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
removeTaskFromKVFn := func(triggerTask task) error {
|
|
keys := make([]string, 0)
|
|
taskKey := fmt.Sprintf("%s/%d", triggerTaskPrefix, triggerTask.getTaskID())
|
|
stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, triggerTask.getTaskID())
|
|
keys = append(keys, taskKey)
|
|
keys = append(keys, stateKey)
|
|
childTasks := triggerTask.getChildTask()
|
|
for _, t := range childTasks {
|
|
taskKey = fmt.Sprintf("%s/%d", activeTaskPrefix, t.getTaskID())
|
|
stateKey = fmt.Sprintf("%s/%d", taskInfoPrefix, t.getTaskID())
|
|
keys = append(keys, taskKey)
|
|
keys = append(keys, stateKey)
|
|
}
|
|
err := scheduler.client.MultiRemove(keys)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
for {
|
|
var err error
|
|
select {
|
|
case <-scheduler.ctx.Done():
|
|
scheduler.stopActivateTaskLoopChan <- 1
|
|
return
|
|
case <-scheduler.triggerTaskQueue.Chan():
|
|
triggerTask = scheduler.triggerTaskQueue.popTask()
|
|
log.Debug("scheduleLoop: pop a triggerTask from triggerTaskQueue", zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
alreadyNotify := true
|
|
if triggerTask.getState() == taskUndo || triggerTask.getState() == taskDoing {
|
|
err = scheduler.processTask(triggerTask)
|
|
if err != nil {
|
|
log.Debug("scheduleLoop: process triggerTask failed", zap.Int64("triggerTaskID", triggerTask.getTaskID()), zap.Error(err))
|
|
alreadyNotify = false
|
|
}
|
|
}
|
|
if triggerTask.msgType() != commonpb.MsgType_LoadCollection && triggerTask.msgType() != commonpb.MsgType_LoadPartitions {
|
|
alreadyNotify = false
|
|
}
|
|
|
|
childTasks := triggerTask.getChildTask()
|
|
if len(childTasks) != 0 {
|
|
// process loadSegment before watchDmChannel, avoid delete not taking effect
|
|
highPriorityTasks, lowPriorityTasks := sortInternalTaskByPriority(childTasks, commonpb.MsgType_LoadSegments)
|
|
processInternalTaskFn(highPriorityTasks, triggerTask)
|
|
if triggerTask.getResultInfo().ErrorCode == commonpb.ErrorCode_Success {
|
|
processInternalTaskFn(lowPriorityTasks, triggerTask)
|
|
}
|
|
if triggerTask.getResultInfo().ErrorCode == commonpb.ErrorCode_Success {
|
|
err = updateSegmentInfoFromTask(scheduler.ctx, triggerTask, scheduler.meta)
|
|
if err != nil {
|
|
triggerTask.setResultInfo(err)
|
|
}
|
|
}
|
|
resultInfo := triggerTask.getResultInfo()
|
|
if resultInfo.ErrorCode != commonpb.ErrorCode_Success {
|
|
if !alreadyNotify {
|
|
triggerTask.notify(errors.New(resultInfo.Reason))
|
|
alreadyNotify = true
|
|
}
|
|
rollBackTasks := triggerTask.rollBack(scheduler.ctx)
|
|
log.Debug("scheduleLoop: start rollBack after triggerTask failed",
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Any("rollBackTasks", rollBackTasks))
|
|
err = rollBackInterTaskFn(triggerTask, childTasks, rollBackTasks)
|
|
if err != nil {
|
|
log.Error("scheduleLoop: rollBackInternalTask error",
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Error(err))
|
|
|
|
} else {
|
|
processInternalTaskFn(rollBackTasks, triggerTask)
|
|
}
|
|
}
|
|
}
|
|
|
|
err = removeTaskFromKVFn(triggerTask)
|
|
if err != nil {
|
|
log.Error("scheduleLoop: error when remove trigger and internal tasks from etcd", zap.Int64("triggerTaskID", triggerTask.getTaskID()), zap.Error(err))
|
|
triggerTask.setResultInfo(err)
|
|
} else {
|
|
log.Debug("scheduleLoop: trigger task done and delete from etcd", zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
}
|
|
|
|
resultStatus := triggerTask.getResultInfo()
|
|
if resultStatus.ErrorCode != commonpb.ErrorCode_Success {
|
|
triggerTask.setState(taskFailed)
|
|
if !alreadyNotify {
|
|
triggerTask.notify(errors.New(resultStatus.Reason))
|
|
}
|
|
} else {
|
|
triggerTask.updateTaskProcess()
|
|
triggerTask.setState(taskExpired)
|
|
if !alreadyNotify {
|
|
triggerTask.notify(nil)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// waitActivateTaskDone function Synchronous wait internal task to be done
|
|
func (scheduler *TaskScheduler) waitActivateTaskDone(wg *sync.WaitGroup, t task, triggerTask task) {
|
|
defer wg.Done()
|
|
var err error
|
|
redoFunc1 := func() {
|
|
if !t.isValid() || !t.isRetryable() {
|
|
log.Debug("waitActivateTaskDone: reSchedule the activate task",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
reScheduledTasks, err := t.reschedule(scheduler.ctx)
|
|
if err != nil {
|
|
log.Error("waitActivateTaskDone: reschedule task error",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Error(err))
|
|
triggerTask.setResultInfo(err)
|
|
return
|
|
}
|
|
removes := make([]string, 0)
|
|
taskKey := fmt.Sprintf("%s/%d", activeTaskPrefix, t.getTaskID())
|
|
removes = append(removes, taskKey)
|
|
stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, t.getTaskID())
|
|
removes = append(removes, stateKey)
|
|
|
|
saves := make(map[string]string)
|
|
for _, rt := range reScheduledTasks {
|
|
if rt != nil {
|
|
id, err := scheduler.taskIDAllocator()
|
|
if err != nil {
|
|
log.Error("waitActivateTaskDone: allocate id error",
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Error(err))
|
|
triggerTask.setResultInfo(err)
|
|
return
|
|
}
|
|
rt.setTaskID(id)
|
|
log.Debug("waitActivateTaskDone: reScheduler set id", zap.Int64("id", rt.getTaskID()))
|
|
taskKey := fmt.Sprintf("%s/%d", activeTaskPrefix, rt.getTaskID())
|
|
blobs, err := rt.marshal()
|
|
if err != nil {
|
|
log.Error("waitActivateTaskDone: error when marshal active task",
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Error(err))
|
|
triggerTask.setResultInfo(err)
|
|
return
|
|
}
|
|
saves[taskKey] = string(blobs)
|
|
stateKey := fmt.Sprintf("%s/%d", taskInfoPrefix, rt.getTaskID())
|
|
saves[stateKey] = strconv.Itoa(int(taskUndo))
|
|
}
|
|
}
|
|
//TODO::queryNode auto watch queryChannel, then update etcd use same id directly
|
|
err = scheduler.client.MultiSaveAndRemove(saves, removes)
|
|
if err != nil {
|
|
log.Error("waitActivateTaskDone: error when save and remove task from etcd", zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
triggerTask.setResultInfo(err)
|
|
return
|
|
}
|
|
triggerTask.removeChildTaskByID(t.getTaskID())
|
|
log.Debug("waitActivateTaskDone: delete failed active task and save reScheduled task to etcd",
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Int64("failed taskID", t.getTaskID()),
|
|
zap.Any("reScheduled tasks", reScheduledTasks))
|
|
|
|
for _, rt := range reScheduledTasks {
|
|
if rt != nil {
|
|
triggerTask.addChildTask(rt)
|
|
log.Debug("waitActivateTaskDone: add a reScheduled active task to activateChan", zap.Int64("taskID", rt.getTaskID()))
|
|
scheduler.activateTaskChan <- rt
|
|
wg.Add(1)
|
|
go scheduler.waitActivateTaskDone(wg, rt, triggerTask)
|
|
}
|
|
}
|
|
//delete task from etcd
|
|
} else {
|
|
log.Debug("waitActivateTaskDone: retry the active task",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
scheduler.activateTaskChan <- t
|
|
wg.Add(1)
|
|
go scheduler.waitActivateTaskDone(wg, t, triggerTask)
|
|
}
|
|
}
|
|
|
|
redoFunc2 := func(err error) {
|
|
if t.isValid() {
|
|
if !t.isRetryable() {
|
|
log.Error("waitActivateTaskDone: activate task failed after retry",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
triggerTask.setResultInfo(err)
|
|
return
|
|
}
|
|
log.Debug("waitActivateTaskDone: retry the active task",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
scheduler.activateTaskChan <- t
|
|
wg.Add(1)
|
|
go scheduler.waitActivateTaskDone(wg, t, triggerTask)
|
|
}
|
|
}
|
|
err = t.waitToFinish()
|
|
if err != nil {
|
|
log.Debug("waitActivateTaskDone: activate task return err",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()),
|
|
zap.Error(err))
|
|
|
|
switch t.msgType() {
|
|
case commonpb.MsgType_LoadSegments:
|
|
redoFunc1()
|
|
case commonpb.MsgType_WatchDmChannels:
|
|
redoFunc1()
|
|
case commonpb.MsgType_WatchDeltaChannels:
|
|
redoFunc2(err)
|
|
case commonpb.MsgType_WatchQueryChannels:
|
|
redoFunc2(err)
|
|
case commonpb.MsgType_ReleaseSegments:
|
|
redoFunc2(err)
|
|
case commonpb.MsgType_ReleaseCollection:
|
|
redoFunc2(err)
|
|
case commonpb.MsgType_ReleasePartitions:
|
|
redoFunc2(err)
|
|
default:
|
|
//TODO:: case commonpb.MsgType_RemoveDmChannels:
|
|
}
|
|
} else {
|
|
log.Debug("waitActivateTaskDone: one activate task done",
|
|
zap.Int64("taskID", t.getTaskID()),
|
|
zap.Int64("triggerTaskID", triggerTask.getTaskID()))
|
|
}
|
|
}
|
|
|
|
// processActivateTaskLoop process internal task, such as loadSegment, watchQUeryChannel, watDmChannel
|
|
func (scheduler *TaskScheduler) processActivateTaskLoop() {
|
|
defer scheduler.wg.Done()
|
|
for {
|
|
select {
|
|
case <-scheduler.stopActivateTaskLoopChan:
|
|
log.Debug("processActivateTaskLoop, ctx done")
|
|
return
|
|
|
|
case t := <-scheduler.activateTaskChan:
|
|
if t == nil {
|
|
log.Error("processActivateTaskLoop: pop a nil active task", zap.Int64("taskID", t.getTaskID()))
|
|
continue
|
|
}
|
|
|
|
if t.getState() != taskDone {
|
|
log.Debug("processActivateTaskLoop: pop a active task from activateChan", zap.Int64("taskID", t.getTaskID()))
|
|
go func() {
|
|
err := scheduler.processTask(t)
|
|
t.notify(err)
|
|
}()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Start function start two goroutines to process trigger tasks and internal tasks
|
|
func (scheduler *TaskScheduler) Start() error {
|
|
scheduler.wg.Add(2)
|
|
go scheduler.scheduleLoop()
|
|
go scheduler.processActivateTaskLoop()
|
|
return nil
|
|
}
|
|
|
|
// Close function stops the scheduleLoop and the processActivateTaskLoop
|
|
func (scheduler *TaskScheduler) Close() {
|
|
scheduler.cancel()
|
|
scheduler.wg.Wait()
|
|
}
|
|
|
|
func updateSegmentInfoFromTask(ctx context.Context, triggerTask task, meta Meta) error {
|
|
segmentInfosToSave := make(map[UniqueID][]*querypb.SegmentInfo)
|
|
segmentInfosToRemove := make(map[UniqueID][]*querypb.SegmentInfo)
|
|
|
|
var sealedSegmentChangeInfos col2SealedSegmentChangeInfos
|
|
var err error
|
|
switch triggerTask.msgType() {
|
|
case commonpb.MsgType_ReleaseCollection:
|
|
// release all segmentInfo of the collection when release collection
|
|
req := triggerTask.(*releaseCollectionTask).ReleaseCollectionRequest
|
|
collectionID := req.CollectionID
|
|
sealedSegmentChangeInfos, err = meta.removeGlobalSealedSegInfos(collectionID, nil)
|
|
case commonpb.MsgType_ReleasePartitions:
|
|
// release all segmentInfo of the partitions when release partitions
|
|
req := triggerTask.(*releasePartitionTask).ReleasePartitionsRequest
|
|
collectionID := req.CollectionID
|
|
segmentInfos := meta.showSegmentInfos(collectionID, req.PartitionIDs)
|
|
for _, info := range segmentInfos {
|
|
if info.CollectionID == collectionID {
|
|
if _, ok := segmentInfosToRemove[collectionID]; !ok {
|
|
segmentInfosToRemove[collectionID] = make([]*querypb.SegmentInfo, 0)
|
|
}
|
|
segmentInfosToRemove[collectionID] = append(segmentInfosToRemove[collectionID], info)
|
|
}
|
|
}
|
|
sealedSegmentChangeInfos, err = meta.removeGlobalSealedSegInfos(collectionID, req.PartitionIDs)
|
|
default:
|
|
// save new segmentInfo when load segment
|
|
for _, childTask := range triggerTask.getChildTask() {
|
|
if childTask.msgType() == commonpb.MsgType_LoadSegments {
|
|
req := childTask.(*loadSegmentTask).LoadSegmentsRequest
|
|
dstNodeID := req.DstNodeID
|
|
for _, loadInfo := range req.Infos {
|
|
collectionID := loadInfo.CollectionID
|
|
segmentID := loadInfo.SegmentID
|
|
segmentInfo := &querypb.SegmentInfo{
|
|
SegmentID: segmentID,
|
|
CollectionID: loadInfo.CollectionID,
|
|
PartitionID: loadInfo.PartitionID,
|
|
NodeID: dstNodeID,
|
|
SegmentState: querypb.SegmentState_sealed,
|
|
CompactionFrom: loadInfo.CompactionFrom,
|
|
}
|
|
if _, ok := segmentInfosToSave[collectionID]; !ok {
|
|
segmentInfosToSave[collectionID] = make([]*querypb.SegmentInfo, 0)
|
|
}
|
|
segmentInfosToSave[collectionID] = append(segmentInfosToSave[collectionID], segmentInfo)
|
|
}
|
|
}
|
|
}
|
|
sealedSegmentChangeInfos, err = meta.saveGlobalSealedSegInfos(segmentInfosToSave)
|
|
}
|
|
|
|
if err != nil {
|
|
rollBackSegmentChangeInfoErr := retry.Do(ctx, func() error {
|
|
rollBackChangeInfos := reverseSealedSegmentChangeInfo(sealedSegmentChangeInfos)
|
|
for collectionID, infos := range rollBackChangeInfos {
|
|
_, _, sendErr := meta.sendSealedSegmentChangeInfos(collectionID, infos)
|
|
if sendErr != nil {
|
|
return sendErr
|
|
}
|
|
}
|
|
return nil
|
|
}, retry.Attempts(20))
|
|
if rollBackSegmentChangeInfoErr != nil {
|
|
log.Error("scheduleLoop: Restore the information of global sealed segments in query node failed", zap.Error(rollBackSegmentChangeInfoErr))
|
|
}
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func reverseSealedSegmentChangeInfo(changeInfosMap map[UniqueID]*querypb.SealedSegmentsChangeInfo) map[UniqueID]*querypb.SealedSegmentsChangeInfo {
|
|
result := make(map[UniqueID]*querypb.SealedSegmentsChangeInfo)
|
|
for collectionID, changeInfos := range changeInfosMap {
|
|
segmentChangeInfos := &querypb.SealedSegmentsChangeInfo{
|
|
Base: &commonpb.MsgBase{
|
|
MsgType: commonpb.MsgType_SealedSegmentsChangeInfo,
|
|
},
|
|
Infos: []*querypb.SegmentChangeInfo{},
|
|
}
|
|
for _, info := range changeInfos.Infos {
|
|
changeInfo := &querypb.SegmentChangeInfo{
|
|
OnlineNodeID: info.OfflineNodeID,
|
|
OnlineSegments: info.OfflineSegments,
|
|
OfflineNodeID: info.OnlineNodeID,
|
|
OfflineSegments: info.OnlineSegments,
|
|
}
|
|
segmentChangeInfos.Infos = append(segmentChangeInfos.Infos, changeInfo)
|
|
}
|
|
result[collectionID] = segmentChangeInfos
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
func sortInternalTaskByPriority(tasks []task, taskType commonpb.MsgType) ([]task, []task) {
|
|
highPriorityTasks := make([]task, 0)
|
|
lowPriorityTasks := make([]task, 0)
|
|
for _, t := range tasks {
|
|
if t.msgType() == taskType {
|
|
highPriorityTasks = append(highPriorityTasks, t)
|
|
} else {
|
|
lowPriorityTasks = append(lowPriorityTasks, t)
|
|
}
|
|
}
|
|
|
|
return highPriorityTasks, lowPriorityTasks
|
|
}
|