85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
// Copyright 2019 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package executor
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import (
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"context"
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"math"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/table"
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"github.com/pingcap/tidb/table/tables"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/chunk"
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"github.com/pingcap/tidb/util/logutil"
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"go.uber.org/zap"
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)
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// SplitIndexRegionExec represents a split index regions executor.
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type SplitIndexRegionExec struct {
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baseExecutor
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table table.Table
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indexInfo *model.IndexInfo
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valueLists [][]types.Datum
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}
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type splitableStore interface {
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SplitRegionAndScatter(splitKey kv.Key) (uint64, error)
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WaitScatterRegionFinish(regionID uint64) error
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}
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// Next implements the Executor Next interface.
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func (e *SplitIndexRegionExec) Next(ctx context.Context, _ *chunk.RecordBatch) error {
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store := e.ctx.GetStore()
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s, ok := store.(splitableStore)
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if !ok {
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return nil
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}
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regionIDs := make([]uint64, 0, len(e.valueLists))
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index := tables.NewIndex(e.table.Meta().ID, e.table.Meta(), e.indexInfo)
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for _, values := range e.valueLists {
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idxKey, _, err := index.GenIndexKey(e.ctx.GetSessionVars().StmtCtx, values, math.MinInt64, nil)
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if err != nil {
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return err
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}
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regionID, err := s.SplitRegionAndScatter(idxKey)
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if err != nil {
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logutil.Logger(context.Background()).Warn("split table index region failed",
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zap.String("table", e.table.Meta().Name.L),
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zap.String("index", e.indexInfo.Name.L),
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zap.Error(err))
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continue
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}
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regionIDs = append(regionIDs, regionID)
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}
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if !e.ctx.GetSessionVars().WaitTableSplitFinish {
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return nil
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}
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for _, regionID := range regionIDs {
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err := s.WaitScatterRegionFinish(regionID)
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if err != nil {
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logutil.Logger(context.Background()).Warn("wait scatter region failed",
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zap.Uint64("regionID", regionID),
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zap.String("table", e.table.Meta().Name.L),
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zap.String("index", e.indexInfo.Name.L),
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zap.Error(err))
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}
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}
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return nil
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}
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