94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
// Copyright 2023 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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 execute
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import (
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"context"
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"sync"
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"time"
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"github.com/pingcap/tidb/pkg/disttask/framework/storage"
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"github.com/pingcap/tidb/pkg/util/logutil"
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"go.uber.org/zap"
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)
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// Summary is used to collect the summary of subtasks execution.
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type Summary struct {
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mu struct {
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sync.Mutex
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RowCount map[int64]int64 // subtask ID -> row count
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}
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}
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// NewSummary creates a new Summary.
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func NewSummary() *Summary {
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return &Summary{
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mu: struct {
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sync.Mutex
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RowCount map[int64]int64
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}{
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RowCount: map[int64]int64{},
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},
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}
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}
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// UpdateRowCount updates the row count of the subtask.
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func (s *Summary) UpdateRowCount(subtaskID int64, rowCount int64) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.mu.RowCount[subtaskID] = rowCount
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}
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// UpdateRowCountLoop updates the row count of the subtask periodically.
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func (s *Summary) UpdateRowCountLoop(ctx context.Context, taskMgr *storage.TaskManager) {
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ticker := time.NewTicker(3 * time.Second)
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defer ticker.Stop()
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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 <-ticker.C:
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s.PersistRowCount(ctx, taskMgr)
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}
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}
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}
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// PersistRowCount persists the row count of the subtask to the storage.
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func (s *Summary) PersistRowCount(ctx context.Context, taskMgr *storage.TaskManager) {
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var copiedRowCount map[int64]int64
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s.mu.Lock()
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if len(s.mu.RowCount) == 0 {
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s.mu.Unlock()
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return
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}
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copiedRowCount = make(map[int64]int64, len(s.mu.RowCount))
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for subtaskID, rowCount := range s.mu.RowCount {
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copiedRowCount[subtaskID] = rowCount
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}
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s.mu.Unlock()
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for subtaskID, rowCount := range copiedRowCount {
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err := taskMgr.UpdateSubtaskRowCount(ctx, subtaskID, rowCount)
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if err != nil {
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logutil.Logger(ctx).Warn("update subtask row count failed", zap.Error(err))
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}
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}
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s.mu.Lock()
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for subtaskID := range copiedRowCount {
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delete(s.mu.RowCount, subtaskID)
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}
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s.mu.Unlock()
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}
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