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87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
// 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 datanode
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import (
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"context"
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"runtime"
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"github.com/milvus-io/milvus/internal/log"
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"go.uber.org/zap"
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)
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const (
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maxTaskNum = 1024
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)
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var maxParallelCompactionNum = calculeateParallel()
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type compactionExecutor struct {
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parallelCh chan struct{}
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taskCh chan compactor
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}
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// 0.5*min(8, NumCPU/2)
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func calculeateParallel() int {
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cores := runtime.NumCPU()
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if cores < 16 {
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return 4
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}
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return cores / 2
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}
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func newCompactionExecutor() *compactionExecutor {
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return &compactionExecutor{
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parallelCh: make(chan struct{}, maxParallelCompactionNum),
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taskCh: make(chan compactor, maxTaskNum),
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}
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}
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func (c *compactionExecutor) execute(task compactor) {
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c.taskCh <- task
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}
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func (c *compactionExecutor) start(ctx context.Context) {
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for {
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select {
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case <-ctx.Done():
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return
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case task := <-c.taskCh:
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go c.executeTask(task)
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}
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}
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}
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func (c *compactionExecutor) executeTask(task compactor) {
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c.parallelCh <- struct{}{}
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defer func() {
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<-c.parallelCh
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}()
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log.Info("start to execute compaction", zap.Int64("planID", task.getPlanID()))
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err := task.compact()
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if err != nil {
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log.Warn("compaction task failed",
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zap.Int64("planID", task.getPlanID()),
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zap.Error(err),
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)
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}
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log.Info("end to execute compaction", zap.Int64("planID", task.getPlanID()))
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}
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