88 lines
2.9 KiB
Go
88 lines
2.9 KiB
Go
// Copyright 2024 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 exec
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import (
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"time"
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"github.com/pingcap/tidb/pkg/metrics"
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"github.com/pingcap/tidb/pkg/parser/ast"
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"github.com/pingcap/tidb/pkg/sessionctx"
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"github.com/pingcap/tidb/pkg/statistics"
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statslogutil "github.com/pingcap/tidb/pkg/statistics/handle/logutil"
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statstypes "github.com/pingcap/tidb/pkg/statistics/handle/types"
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statsutil "github.com/pingcap/tidb/pkg/statistics/handle/util"
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"github.com/pingcap/tidb/pkg/util/chunk"
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"github.com/pingcap/tidb/pkg/util/sqlescape"
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"github.com/pingcap/tidb/pkg/util/sqlexec"
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"go.uber.org/zap"
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)
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var execOptionForAnalyze = map[int]sqlexec.OptionFuncAlias{
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statistics.Version0: sqlexec.ExecOptionAnalyzeVer1,
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statistics.Version1: sqlexec.ExecOptionAnalyzeVer1,
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statistics.Version2: sqlexec.ExecOptionAnalyzeVer2,
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}
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// AutoAnalyze executes the auto analyze task.
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func AutoAnalyze(
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sctx sessionctx.Context,
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statsHandle statstypes.StatsHandle,
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sysProcTracker sessionctx.SysProcTracker,
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statsVer int,
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sql string,
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params ...any,
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) {
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startTime := time.Now()
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_, _, err := execAnalyzeStmt(sctx, statsHandle, sysProcTracker, statsVer, sql, params...)
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dur := time.Since(startTime)
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metrics.AutoAnalyzeHistogram.Observe(dur.Seconds())
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if err != nil {
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escaped, err1 := sqlescape.EscapeSQL(sql, params...)
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if err1 != nil {
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escaped = ""
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}
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statslogutil.StatsLogger().Error(
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"auto analyze failed",
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zap.String("sql", escaped),
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zap.Duration("cost_time", dur),
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zap.Error(err),
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)
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metrics.AutoAnalyzeCounter.WithLabelValues("failed").Inc()
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} else {
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metrics.AutoAnalyzeCounter.WithLabelValues("succ").Inc()
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}
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}
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func execAnalyzeStmt(
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sctx sessionctx.Context,
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statsHandle statstypes.StatsHandle,
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sysProcTracker sessionctx.SysProcTracker,
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statsVer int,
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sql string,
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params ...any,
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) ([]chunk.Row, []*ast.ResultField, error) {
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pruneMode := sctx.GetSessionVars().PartitionPruneMode.Load()
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analyzeSnapshot := sctx.GetSessionVars().EnableAnalyzeSnapshot
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optFuncs := []sqlexec.OptionFuncAlias{
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execOptionForAnalyze[statsVer],
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sqlexec.GetAnalyzeSnapshotOption(analyzeSnapshot),
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sqlexec.GetPartitionPruneModeOption(pruneMode),
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sqlexec.ExecOptionUseCurSession,
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sqlexec.ExecOptionWithSysProcTrack(statsHandle.AutoAnalyzeProcID(), sysProcTracker.Track, sysProcTracker.UnTrack),
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}
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return statsutil.ExecWithOpts(sctx, optFuncs, sql, params...)
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}
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