milvus/internal/datanode/importv2/scheduler.go

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// 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 importv2
import (
"sync"
"time"
"github.com/samber/lo"
"go.uber.org/zap"
"github.com/milvus-io/milvus/internal/proto/datapb"
"github.com/milvus-io/milvus/pkg/log"
"github.com/milvus-io/milvus/pkg/util/conc"
"github.com/milvus-io/milvus/pkg/util/paramtable"
)
type Scheduler interface {
Start()
Slots() int64
Close()
}
type scheduler struct {
manager TaskManager
closeOnce sync.Once
closeChan chan struct{}
}
func NewScheduler(manager TaskManager) Scheduler {
return &scheduler{
manager: manager,
closeChan: make(chan struct{}),
}
}
func (s *scheduler) Start() {
log.Info("start import scheduler")
var (
exeTicker = time.NewTicker(1 * time.Second)
logTicker = time.NewTicker(10 * time.Minute)
)
defer exeTicker.Stop()
defer logTicker.Stop()
for {
select {
case <-s.closeChan:
log.Info("import scheduler exited")
return
case <-exeTicker.C:
tasks := s.manager.GetBy(WithStates(datapb.ImportTaskStateV2_Pending))
futures := make(map[int64][]*conc.Future[any])
for _, task := range tasks {
fs := task.Execute()
futures[task.GetTaskID()] = fs
tryFreeFutures(futures)
}
for taskID, fs := range futures {
err := conc.AwaitAll(fs...)
if err != nil {
continue
}
s.manager.Update(taskID, UpdateState(datapb.ImportTaskStateV2_Completed))
log.Info("preimport/import done", zap.Int64("taskID", taskID))
}
case <-logTicker.C:
LogStats(s.manager)
}
}
}
func (s *scheduler) Slots() int64 {
tasks := s.manager.GetBy(WithStates(datapb.ImportTaskStateV2_Pending, datapb.ImportTaskStateV2_InProgress))
return paramtable.Get().DataNodeCfg.MaxConcurrentImportTaskNum.GetAsInt64() - int64(len(tasks))
}
func (s *scheduler) Close() {
s.closeOnce.Do(func() {
close(s.closeChan)
})
}
func tryFreeFutures(futures map[int64][]*conc.Future[any]) {
for k, fs := range futures {
fs = lo.Filter(fs, func(f *conc.Future[any], _ int) bool {
if f.Done() {
_, err := f.Await()
return err != nil
}
return true
})
futures[k] = fs
}
}