mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 21:39:19 +08:00
5db458a44e
Signed-off-by: Edward Zeng <jie.zeng@zilliz.com>
308 lines
8.4 KiB
Go
308 lines
8.4 KiB
Go
// Licensed to the LF AI & Data foundation under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package datacoord
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/milvus-io/milvus/internal/log"
|
|
"github.com/milvus-io/milvus/internal/proto/datapb"
|
|
"github.com/milvus-io/milvus/internal/util/tsoutil"
|
|
"go.uber.org/zap"
|
|
)
|
|
|
|
// TODO this num should be determined by resources of datanode, for now, we set to a fixed value for simple
|
|
const (
|
|
maxParallelCompactionTaskNum = 100
|
|
compactionTimeout = 10 * time.Second
|
|
compactionExpirationCheckInterval = 60 * time.Second
|
|
)
|
|
|
|
type compactionPlanContext interface {
|
|
start()
|
|
stop()
|
|
// execCompactionPlan start to execute plan and return immediately
|
|
execCompactionPlan(signal *compactionSignal, plan *datapb.CompactionPlan) error
|
|
// completeCompaction record the result of a compaction
|
|
completeCompaction(result *datapb.CompactionResult) error
|
|
// getCompaction return compaction task. If planId does not exist, return nil.
|
|
getCompaction(planID int64) *compactionTask
|
|
// expireCompaction set the compaction state to expired
|
|
expireCompaction(ts Timestamp) error
|
|
// isFull return true if the task pool is full
|
|
isFull() bool
|
|
// get compaction tasks by signal id
|
|
getCompactionTasksBySignalID(signalID int64) []*compactionTask
|
|
}
|
|
|
|
type compactionTaskState int8
|
|
|
|
const (
|
|
executing compactionTaskState = iota + 1
|
|
completed
|
|
timeout
|
|
)
|
|
|
|
var (
|
|
errChannelNotWatched = errors.New("channel is not watched")
|
|
errChannelInBuffer = errors.New("channel is in buffer")
|
|
)
|
|
|
|
type compactionTask struct {
|
|
triggerInfo *compactionSignal
|
|
plan *datapb.CompactionPlan
|
|
state compactionTaskState
|
|
dataNodeID int64
|
|
result *datapb.CompactionResult
|
|
}
|
|
|
|
func (t *compactionTask) shadowClone(opts ...compactionTaskOpt) *compactionTask {
|
|
task := &compactionTask{
|
|
triggerInfo: t.triggerInfo,
|
|
plan: t.plan,
|
|
state: t.state,
|
|
dataNodeID: t.dataNodeID,
|
|
}
|
|
for _, opt := range opts {
|
|
opt(task)
|
|
}
|
|
return task
|
|
}
|
|
|
|
var _ compactionPlanContext = (*compactionPlanHandler)(nil)
|
|
|
|
type compactionPlanHandler struct {
|
|
plans map[int64]*compactionTask // planid -> task
|
|
sessions *SessionManager
|
|
meta *meta
|
|
chManager *ChannelManager
|
|
mu sync.RWMutex
|
|
executingTaskNum int
|
|
allocator allocator
|
|
quit chan struct{}
|
|
wg sync.WaitGroup
|
|
flushCh chan UniqueID
|
|
}
|
|
|
|
func newCompactionPlanHandler(sessions *SessionManager, cm *ChannelManager, meta *meta,
|
|
allocator allocator, flush chan UniqueID) *compactionPlanHandler {
|
|
return &compactionPlanHandler{
|
|
plans: make(map[int64]*compactionTask),
|
|
chManager: cm,
|
|
meta: meta,
|
|
sessions: sessions,
|
|
allocator: allocator,
|
|
flushCh: flush,
|
|
}
|
|
}
|
|
|
|
func (c *compactionPlanHandler) start() {
|
|
ticker := time.NewTicker(compactionExpirationCheckInterval)
|
|
c.quit = make(chan struct{})
|
|
c.wg.Add(1)
|
|
|
|
go func() {
|
|
defer c.wg.Done()
|
|
for {
|
|
select {
|
|
case <-c.quit:
|
|
ticker.Stop()
|
|
log.Info("compaction handler quit")
|
|
return
|
|
case <-ticker.C:
|
|
cctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
ts, err := c.allocator.allocTimestamp(cctx)
|
|
if err != nil {
|
|
log.Warn("unable to alloc timestamp", zap.Error(err))
|
|
cancel()
|
|
continue
|
|
}
|
|
cancel()
|
|
_ = c.expireCompaction(ts)
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
func (c *compactionPlanHandler) stop() {
|
|
close(c.quit)
|
|
c.wg.Wait()
|
|
}
|
|
|
|
// execCompactionPlan start to execute plan and return immediately
|
|
func (c *compactionPlanHandler) execCompactionPlan(signal *compactionSignal, plan *datapb.CompactionPlan) error {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
|
|
nodeID, err := c.chManager.FindWatcher(plan.GetChannel())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
c.setSegmentsCompacting(plan, true)
|
|
|
|
// FIXME: check response of compaction call and restore segment state if failed
|
|
c.sessions.Compaction(nodeID, plan)
|
|
|
|
task := &compactionTask{
|
|
triggerInfo: signal,
|
|
plan: plan,
|
|
state: executing,
|
|
dataNodeID: nodeID,
|
|
}
|
|
c.plans[plan.PlanID] = task
|
|
c.executingTaskNum++
|
|
return nil
|
|
}
|
|
|
|
func (c *compactionPlanHandler) setSegmentsCompacting(plan *datapb.CompactionPlan, compacting bool) {
|
|
for _, segmentBinlogs := range plan.GetSegmentBinlogs() {
|
|
c.meta.SetSegmentCompacting(segmentBinlogs.GetSegmentID(), compacting)
|
|
}
|
|
}
|
|
|
|
// completeCompaction record the result of a compaction
|
|
func (c *compactionPlanHandler) completeCompaction(result *datapb.CompactionResult) error {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
|
|
planID := result.PlanID
|
|
if _, ok := c.plans[planID]; !ok {
|
|
return fmt.Errorf("plan %d is not found", planID)
|
|
}
|
|
|
|
if c.plans[planID].state != executing {
|
|
return fmt.Errorf("plan %d's state is %v", planID, c.plans[planID].state)
|
|
}
|
|
|
|
plan := c.plans[planID].plan
|
|
switch plan.GetType() {
|
|
case datapb.CompactionType_InnerCompaction:
|
|
if err := c.handleInnerCompactionResult(plan, result); err != nil {
|
|
return err
|
|
}
|
|
case datapb.CompactionType_MergeCompaction:
|
|
if err := c.handleMergeCompactionResult(plan, result); err != nil {
|
|
return err
|
|
}
|
|
default:
|
|
return errors.New("unknown compaction type")
|
|
}
|
|
c.plans[planID] = c.plans[planID].shadowClone(setState(completed), setResult(result))
|
|
c.executingTaskNum--
|
|
if c.plans[planID].plan.GetType() == datapb.CompactionType_MergeCompaction {
|
|
c.flushCh <- result.GetSegmentID()
|
|
}
|
|
// TODO: when to clean task list
|
|
|
|
return nil
|
|
}
|
|
|
|
func (c *compactionPlanHandler) handleInnerCompactionResult(plan *datapb.CompactionPlan, result *datapb.CompactionResult) error {
|
|
return c.meta.CompleteInnerCompaction(plan.GetSegmentBinlogs()[0], result)
|
|
}
|
|
|
|
func (c *compactionPlanHandler) handleMergeCompactionResult(plan *datapb.CompactionPlan, result *datapb.CompactionResult) error {
|
|
return c.meta.CompleteMergeCompaction(plan.GetSegmentBinlogs(), result)
|
|
}
|
|
|
|
// getCompaction return compaction task. If planId does not exist, return nil.
|
|
func (c *compactionPlanHandler) getCompaction(planID int64) *compactionTask {
|
|
c.mu.RLock()
|
|
defer c.mu.RUnlock()
|
|
|
|
return c.plans[planID]
|
|
}
|
|
|
|
// expireCompaction set the compaction state to expired
|
|
func (c *compactionPlanHandler) expireCompaction(ts Timestamp) error {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
|
|
tasks := c.getExecutingCompactions()
|
|
for _, task := range tasks {
|
|
if !c.isTimeout(ts, task.plan.GetStartTime(), task.plan.GetTimeoutInSeconds()) {
|
|
continue
|
|
}
|
|
|
|
c.setSegmentsCompacting(task.plan, false)
|
|
|
|
planID := task.plan.PlanID
|
|
c.plans[planID] = c.plans[planID].shadowClone(setState(timeout))
|
|
c.executingTaskNum--
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (c *compactionPlanHandler) isTimeout(now Timestamp, start Timestamp, timeout int32) bool {
|
|
starttime, _ := tsoutil.ParseTS(start)
|
|
ts, _ := tsoutil.ParseTS(now)
|
|
return int32(ts.Sub(starttime).Seconds()) >= timeout
|
|
}
|
|
|
|
// isFull return true if the task pool is full
|
|
func (c *compactionPlanHandler) isFull() bool {
|
|
c.mu.RLock()
|
|
defer c.mu.RUnlock()
|
|
|
|
return c.executingTaskNum >= maxParallelCompactionTaskNum
|
|
}
|
|
|
|
func (c *compactionPlanHandler) getExecutingCompactions() []*compactionTask {
|
|
tasks := make([]*compactionTask, 0, len(c.plans))
|
|
for _, plan := range c.plans {
|
|
if plan.state == executing {
|
|
tasks = append(tasks, plan)
|
|
}
|
|
}
|
|
return tasks
|
|
}
|
|
|
|
// get compaction tasks by signal id
|
|
func (c *compactionPlanHandler) getCompactionTasksBySignalID(signalID int64) []*compactionTask {
|
|
c.mu.RLock()
|
|
defer c.mu.RUnlock()
|
|
|
|
var tasks []*compactionTask
|
|
for _, t := range c.plans {
|
|
if t.triggerInfo.id != signalID {
|
|
continue
|
|
}
|
|
tasks = append(tasks, t)
|
|
}
|
|
return tasks
|
|
}
|
|
|
|
type compactionTaskOpt func(task *compactionTask)
|
|
|
|
func setState(state compactionTaskState) compactionTaskOpt {
|
|
return func(task *compactionTask) {
|
|
task.state = state
|
|
}
|
|
}
|
|
|
|
func setResult(result *datapb.CompactionResult) compactionTaskOpt {
|
|
return func(task *compactionTask) {
|
|
task.result = result
|
|
}
|
|
}
|