965 lines
36 KiB
Go
965 lines
36 KiB
Go
// Copyright 2018 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 executor_test
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/tidb/domain"
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"github.com/pingcap/tidb/executor"
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"github.com/pingcap/tidb/infoschema"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/parser/ast"
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"github.com/pingcap/tidb/parser/model"
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"github.com/pingcap/tidb/parser/mysql"
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"github.com/pingcap/tidb/planner/core"
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"github.com/pingcap/tidb/session"
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"github.com/pingcap/tidb/sessionctx"
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"github.com/pingcap/tidb/sessionctx/stmtctx"
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"github.com/pingcap/tidb/sessionctx/variable"
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"github.com/pingcap/tidb/statistics"
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"github.com/pingcap/tidb/statistics/handle"
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"github.com/pingcap/tidb/store/mockstore"
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"github.com/pingcap/tidb/table"
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"github.com/pingcap/tidb/tablecodec"
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"github.com/pingcap/tidb/testkit"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/codec"
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"github.com/pingcap/tidb/util/collate"
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"github.com/stretchr/testify/require"
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"github.com/tikv/client-go/v2/testutils"
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"github.com/tikv/client-go/v2/tikv"
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"github.com/tikv/client-go/v2/tikvrpc"
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)
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func TestAnalyzePartition(t *testing.T) {
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store, clean := testkit.CreateMockStore(t)
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defer clean()
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tk := testkit.NewTestKit(t, store)
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testkit.WithPruneMode(tk, variable.Static, func() {
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("set @@tidb_analyze_version=2")
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createTable := `CREATE TABLE t (a int, b int, c varchar(10), primary key(a), index idx(b))
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PARTITION BY RANGE ( a ) (
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PARTITION p0 VALUES LESS THAN (6),
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PARTITION p1 VALUES LESS THAN (11),
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PARTITION p2 VALUES LESS THAN (16),
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PARTITION p3 VALUES LESS THAN (21)
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)`
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tk.MustExec(createTable)
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for i := 1; i < 21; i++ {
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tk.MustExec(fmt.Sprintf(`insert into t values (%d, %d, "hello")`, i, i))
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}
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tk.MustExec("analyze table t")
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is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
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table, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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require.NoError(t, err)
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pi := table.Meta().GetPartitionInfo()
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require.NotNil(t, pi)
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do, err := session.GetDomain(store)
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require.NoError(t, err)
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handle := do.StatsHandle()
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for _, def := range pi.Definitions {
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statsTbl := handle.GetPartitionStats(table.Meta(), def.ID)
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require.False(t, statsTbl.Pseudo)
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require.Len(t, statsTbl.Columns, 3)
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require.Len(t, statsTbl.Indices, 1)
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for _, col := range statsTbl.Columns {
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require.Greater(t, col.Len()+col.Num(), 0)
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}
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for _, idx := range statsTbl.Indices {
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require.Greater(t, idx.Len()+idx.Num(), 0)
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}
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}
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tk.MustExec("drop table t")
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tk.MustExec(createTable)
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for i := 1; i < 21; i++ {
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tk.MustExec(fmt.Sprintf(`insert into t values (%d, %d, "hello")`, i, i))
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}
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tk.MustExec("alter table t analyze partition p0")
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is = tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
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table, err = is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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require.NoError(t, err)
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pi = table.Meta().GetPartitionInfo()
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require.NotNil(t, pi)
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for i, def := range pi.Definitions {
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statsTbl := handle.GetPartitionStats(table.Meta(), def.ID)
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if i == 0 {
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require.False(t, statsTbl.Pseudo)
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require.Len(t, statsTbl.Columns, 3)
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require.Len(t, statsTbl.Indices, 1)
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} else {
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require.True(t, statsTbl.Pseudo)
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}
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}
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})
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}
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func TestAnalyzeReplicaReadFollower(t *testing.T) {
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store, clean := testkit.CreateMockStore(t)
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defer clean()
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int)")
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ctx := tk.Session().(sessionctx.Context)
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ctx.GetSessionVars().SetReplicaRead(kv.ReplicaReadFollower)
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tk.MustExec("analyze table t")
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}
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func TestClusterIndexAnalyze(t *testing.T) {
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store, clean := testkit.CreateMockStore(t)
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defer clean()
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("drop database if exists test_cluster_index_analyze;")
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tk.MustExec("create database test_cluster_index_analyze;")
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tk.MustExec("use test_cluster_index_analyze;")
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tk.Session().GetSessionVars().EnableClusteredIndex = variable.ClusteredIndexDefModeOn
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tk.MustExec("create table t (a int, b int, c int, primary key(a, b));")
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for i := 0; i < 100; i++ {
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tk.MustExec("insert into t values (?, ?, ?)", i, i, i)
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}
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tk.MustExec("analyze table t;")
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tk.MustExec("drop table t;")
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tk.MustExec("create table t (a varchar(255), b int, c float, primary key(c, a));")
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for i := 0; i < 100; i++ {
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tk.MustExec("insert into t values (?, ?, ?)", strconv.Itoa(i), i, i)
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}
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tk.MustExec("analyze table t;")
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tk.MustExec("drop table t;")
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tk.MustExec("create table t (a char(10), b decimal(5, 3), c int, primary key(a, c, b));")
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for i := 0; i < 100; i++ {
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tk.MustExec("insert into t values (?, ?, ?)", strconv.Itoa(i), i, i)
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}
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tk.MustExec("analyze table t;")
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tk.MustExec("drop table t;")
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}
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func TestAnalyzeRestrict(t *testing.T) {
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store, clean := testkit.CreateMockStore(t)
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defer clean()
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int)")
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ctx := tk.Session().(sessionctx.Context)
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ctx.GetSessionVars().InRestrictedSQL = true
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tk.MustExec("analyze table t")
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}
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func TestAnalyzeParameters(t *testing.T) {
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store, clean := testkit.CreateMockStore(t)
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defer clean()
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dom, err := session.BootstrapSession(store)
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require.NoError(t, err)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int)")
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for i := 0; i < 20; i++ {
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tk.MustExec(fmt.Sprintf("insert into t values (%d)", i))
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}
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tk.MustExec("insert into t values (19), (19), (19)")
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tk.MustExec("set @@tidb_enable_fast_analyze = 1")
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tk.MustExec("set @@tidb_analyze_version = 1")
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tk.MustExec("analyze table t with 30 samples")
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is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
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table, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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require.NoError(t, err)
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tableInfo := table.Meta()
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tbl := dom.StatsHandle().GetTableStats(tableInfo)
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col := tbl.Columns[1]
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require.Equal(t, 20, col.Len())
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require.Len(t, col.TopN.TopN, 1)
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width, depth := col.CMSketch.GetWidthAndDepth()
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require.Equal(t, int32(5), depth)
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require.Equal(t, int32(2048), width)
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tk.MustExec("analyze table t with 4 buckets, 0 topn, 4 cmsketch width, 4 cmsketch depth")
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tbl = dom.StatsHandle().GetTableStats(tableInfo)
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col = tbl.Columns[1]
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require.Equal(t, 4, col.Len())
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require.Nil(t, col.TopN)
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width, depth = col.CMSketch.GetWidthAndDepth()
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require.Equal(t, int32(4), depth)
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require.Equal(t, int32(4), width)
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// Test very large cmsketch
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tk.MustExec(fmt.Sprintf("analyze table t with %d cmsketch width, %d cmsketch depth", core.CMSketchSizeLimit, 1))
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tbl = dom.StatsHandle().GetTableStats(tableInfo)
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col = tbl.Columns[1]
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require.Equal(t, 20, col.Len())
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require.Len(t, col.TopN.TopN, 1)
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width, depth = col.CMSketch.GetWidthAndDepth()
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require.Equal(t, int32(1), depth)
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require.Equal(t, int32(core.CMSketchSizeLimit), width)
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// Test very large cmsketch
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tk.MustExec("analyze table t with 20480 cmsketch width, 50 cmsketch depth")
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tbl = dom.StatsHandle().GetTableStats(tableInfo)
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col = tbl.Columns[1]
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require.Equal(t, 20, col.Len())
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require.Len(t, col.TopN.TopN, 1)
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width, depth = col.CMSketch.GetWidthAndDepth()
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require.Equal(t, int32(50), depth)
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require.Equal(t, int32(20480), width)
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}
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func TestAnalyzeTooLongColumns(t *testing.T) {
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store, clean := testkit.CreateMockStore(t)
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defer clean()
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dom, err := session.BootstrapSession(store)
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require.NoError(t, err)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a json)")
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value := fmt.Sprintf(`{"x":"%s"}`, strings.Repeat("x", mysql.MaxFieldVarCharLength))
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tk.MustExec(fmt.Sprintf("insert into t values ('%s')", value))
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tk.MustExec("analyze table t")
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is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
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table, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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require.NoError(t, err)
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tableInfo := table.Meta()
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tbl := dom.StatsHandle().GetTableStats(tableInfo)
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require.Equal(t, 0, tbl.Columns[1].Len())
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require.Equal(t, int64(65559), tbl.Columns[1].TotColSize)
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}
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func TestAnalyzeIndexExtractTopN(t *testing.T) {
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_ = checkHistogram
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t.Skip("unstable, skip it and fix it before 20210618")
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store, err := mockstore.NewMockStore()
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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var dom *domain.Domain
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session.DisableStats4Test()
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session.SetSchemaLease(0)
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dom, err = session.BootstrapSession(store)
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require.NoError(t, err)
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defer dom.Close()
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("create database test_index_extract_topn")
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tk.MustExec("use test_index_extract_topn")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int, b int, index idx(a, b))")
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tk.MustExec("insert into t values(1, 1), (1, 1), (1, 2), (1, 2)")
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tk.MustExec("set @@session.tidb_analyze_version=2")
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tk.MustExec("analyze table t")
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is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
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table, err := is.TableByName(model.NewCIStr("test_index_extract_topn"), model.NewCIStr("t"))
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require.NoError(t, err)
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tableInfo := table.Meta()
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tbl := dom.StatsHandle().GetTableStats(tableInfo)
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// Construct TopN, should be (1, 1) -> 2 and (1, 2) -> 2
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topn := statistics.NewTopN(2)
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{
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key1, err := codec.EncodeKey(tk.Session().GetSessionVars().StmtCtx, nil, types.NewIntDatum(1), types.NewIntDatum(1))
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require.NoError(t, err)
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topn.AppendTopN(key1, 2)
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key2, err := codec.EncodeKey(tk.Session().GetSessionVars().StmtCtx, nil, types.NewIntDatum(1), types.NewIntDatum(2))
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require.NoError(t, err)
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topn.AppendTopN(key2, 2)
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}
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for _, idx := range tbl.Indices {
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ok, err := checkHistogram(tk.Session().GetSessionVars().StmtCtx, &idx.Histogram)
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require.NoError(t, err)
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require.True(t, ok)
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require.True(t, idx.TopN.Equal(topn))
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}
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}
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func TestAnalyzeFastSample(t *testing.T) {
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var cls testutils.Cluster
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store, err := mockstore.NewMockStore(
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mockstore.WithClusterInspector(func(c testutils.Cluster) {
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mockstore.BootstrapWithSingleStore(c)
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cls = c
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}),
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)
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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var dom *domain.Domain
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session.DisableStats4Test()
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session.SetSchemaLease(0)
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dom, err = session.BootstrapSession(store)
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require.NoError(t, err)
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defer dom.Close()
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tk := testkit.NewTestKit(t, store)
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atomic.StoreInt64(&executor.RandSeed, 123)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int primary key, b int, index index_b(b))")
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tbl, err := dom.InfoSchema().TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
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require.NoError(t, err)
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tblInfo := tbl.Meta()
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tid := tblInfo.ID
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// construct 5 regions split by {12, 24, 36, 48}
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splitKeys := generateTableSplitKeyForInt(tid, []int{12, 24, 36, 48})
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manipulateCluster(cls, splitKeys)
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for i := 0; i < 60; i++ {
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tk.MustExec(fmt.Sprintf("insert into t values (%d, %d)", i, i))
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}
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handleCols := core.BuildHandleColsForAnalyze(tk.Session(), tblInfo, true, nil)
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var colsInfo []*model.ColumnInfo
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var indicesInfo []*model.IndexInfo
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for _, col := range tblInfo.Columns {
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if mysql.HasPriKeyFlag(col.Flag) {
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continue
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}
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colsInfo = append(colsInfo, col)
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}
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for _, idx := range tblInfo.Indices {
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if idx.State == model.StatePublic {
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indicesInfo = append(indicesInfo, idx)
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}
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}
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opts := make(map[ast.AnalyzeOptionType]uint64)
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opts[ast.AnalyzeOptNumSamples] = 20
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// Get a start_ts later than the above inserts.
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tk.MustExec("begin")
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txn, err := tk.Session().Txn(false)
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require.NoError(t, err)
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ts := txn.StartTS()
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tk.MustExec("commit")
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mockExec := &executor.AnalyzeTestFastExec{
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Ctx: tk.Session().(sessionctx.Context),
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HandleCols: handleCols,
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ColsInfo: colsInfo,
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IdxsInfo: indicesInfo,
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Concurrency: 1,
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Snapshot: ts,
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TableID: statistics.AnalyzeTableID{
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PartitionID: -1,
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TableID: tbl.(table.PhysicalTable).GetPhysicalID(),
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},
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TblInfo: tblInfo,
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Opts: opts,
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}
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err = mockExec.TestFastSample()
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require.NoError(t, err)
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require.Len(t, mockExec.Collectors, 3)
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for i := 0; i < 2; i++ {
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samples := mockExec.Collectors[i].Samples
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require.Len(t, samples, 20)
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for j := 1; j < 20; j++ {
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cmp, err := samples[j].Value.Compare(tk.Session().GetSessionVars().StmtCtx, &samples[j-1].Value, collate.GetBinaryCollator())
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require.NoError(t, err)
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require.Greater(t, cmp, 0)
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}
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}
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}
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func checkHistogram(sc *stmtctx.StatementContext, hg *statistics.Histogram) (bool, error) {
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for i := 0; i < len(hg.Buckets); i++ {
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lower, upper := hg.GetLower(i), hg.GetUpper(i)
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cmp, err := upper.Compare(sc, lower, collate.GetBinaryCollator())
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if cmp < 0 || err != nil {
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return false, err
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}
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if i == 0 {
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continue
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}
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previousUpper := hg.GetUpper(i - 1)
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cmp, err = lower.Compare(sc, previousUpper, collate.GetBinaryCollator())
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if cmp <= 0 || err != nil {
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return false, err
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}
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}
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return true, nil
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}
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func TestFastAnalyze(t *testing.T) {
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t.Skip("Skip this unstable test(#25782) and bring it back before 2021-07-29.")
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var cls testutils.Cluster
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store, err := mockstore.NewMockStore(
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mockstore.WithClusterInspector(func(c testutils.Cluster) {
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mockstore.BootstrapWithSingleStore(c)
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cls = c
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}),
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)
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require.NoError(t, err)
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defer func() {
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err := store.Close()
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require.NoError(t, err)
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}()
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var dom *domain.Domain
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session.DisableStats4Test()
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session.SetSchemaLease(0)
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dom, err = session.BootstrapSession(store)
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require.NoError(t, err)
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dom.SetStatsUpdating(true)
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defer dom.Close()
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tk := testkit.NewTestKit(t, store)
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atomic.StoreInt64(&executor.RandSeed, 123)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int primary key, b int, c char(10), index index_b(b))")
|
|
tk.MustExec("set @@session.tidb_enable_fast_analyze=1")
|
|
tk.MustExec("set @@session.tidb_build_stats_concurrency=1")
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
// Should not panic.
|
|
tk.MustExec("analyze table t")
|
|
tblInfo, err := dom.InfoSchema().TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
|
|
require.NoError(t, err)
|
|
tid := tblInfo.Meta().ID
|
|
|
|
// construct 6 regions split by {10, 20, 30, 40, 50}
|
|
splitKeys := generateTableSplitKeyForInt(tid, []int{10, 20, 30, 40, 50})
|
|
manipulateCluster(cls, splitKeys)
|
|
|
|
for i := 0; i < 20; i++ {
|
|
tk.MustExec(fmt.Sprintf(`insert into t values (%d, %d, "char")`, i*3, i*3))
|
|
}
|
|
tk.MustExec("analyze table t with 5 buckets, 6 samples")
|
|
|
|
is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
|
|
table, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
|
|
require.NoError(t, err)
|
|
tableInfo := table.Meta()
|
|
tbl := dom.StatsHandle().GetTableStats(tableInfo)
|
|
// TODO(tangenta): add stats_meta.row_count assertion.
|
|
for _, col := range tbl.Columns {
|
|
ok, err := checkHistogram(tk.Session().GetSessionVars().StmtCtx, &col.Histogram)
|
|
require.NoError(t, err)
|
|
require.True(t, ok)
|
|
}
|
|
for _, idx := range tbl.Indices {
|
|
ok, err := checkHistogram(tk.Session().GetSessionVars().StmtCtx, &idx.Histogram)
|
|
require.NoError(t, err)
|
|
require.True(t, ok)
|
|
}
|
|
|
|
// Test CM Sketch built from fast analyze.
|
|
tk.MustExec("create table t1(a int, b int, index idx(a, b))")
|
|
// Should not panic.
|
|
tk.MustExec("analyze table t1")
|
|
tk.MustExec("insert into t1 values (1,1),(1,1),(1,2),(1,2)")
|
|
tk.MustExec("analyze table t1")
|
|
tk.MustQuery("explain format = 'brief' select a from t1 where a = 1").Check(testkit.Rows(
|
|
"IndexReader 4.00 root index:IndexRangeScan",
|
|
"└─IndexRangeScan 4.00 cop[tikv] table:t1, index:idx(a, b) range:[1,1], keep order:false"))
|
|
tk.MustQuery("explain format = 'brief' select a, b from t1 where a = 1 and b = 1").Check(testkit.Rows(
|
|
"IndexReader 2.00 root index:IndexRangeScan",
|
|
"└─IndexRangeScan 2.00 cop[tikv] table:t1, index:idx(a, b) range:[1 1,1 1], keep order:false"))
|
|
tk.MustQuery("explain format = 'brief' select a, b from t1 where a = 1 and b = 2").Check(testkit.Rows(
|
|
"IndexReader 2.00 root index:IndexRangeScan",
|
|
"└─IndexRangeScan 2.00 cop[tikv] table:t1, index:idx(a, b) range:[1 2,1 2], keep order:false"))
|
|
|
|
tk.MustExec("create table t2 (a bigint unsigned, primary key(a))")
|
|
tk.MustExec("insert into t2 values (0), (18446744073709551615)")
|
|
tk.MustExec("analyze table t2")
|
|
tk.MustQuery("show stats_buckets where table_name = 't2'").Check(testkit.Rows(
|
|
"test t2 a 0 0 1 1 0 0 0",
|
|
"test t2 a 0 1 2 1 18446744073709551615 18446744073709551615 0"))
|
|
|
|
tk.MustExec(`set @@tidb_partition_prune_mode='` + string(variable.Static) + `'`)
|
|
tk.MustExec(`create table t3 (id int, v int, primary key(id), index k(v)) partition by hash (id) partitions 4`)
|
|
tk.MustExec(`insert into t3 values(1, 1), (2, 2), (5, 1), (9, 3), (13, 3), (17, 5), (3, 0)`)
|
|
tk.MustExec(`analyze table t3`)
|
|
tk.MustQuery(`explain format = 'brief' select v from t3 partition(p1) where v = 3`).Check(testkit.Rows(
|
|
"IndexReader 2.00 root index:IndexRangeScan",
|
|
"└─IndexRangeScan 2.00 cop[tikv] table:t3, partition:p1, index:k(v) range:[3,3], keep order:false",
|
|
))
|
|
tk.MustExec(`set @@tidb_partition_prune_mode='` + string(variable.Dynamic) + `'`)
|
|
|
|
// global-stats depends on stats-ver2, but stats-ver2 is not compatible with fast-analyze, so forbid using global-stats with fast-analyze now.
|
|
// TODO: add more test cases about global-stats with fast-analyze after resolving the compatibility problem.
|
|
/*
|
|
// test fast analyze in dynamic mode
|
|
tk.MustExec("drop table if exists t4;")
|
|
tk.MustExec("create table t4(a int, b int) PARTITION BY HASH(a) PARTITIONS 2;")
|
|
tk.MustExec("insert into t4 values(1,1),(3,3),(4,4),(2,2),(5,5);")
|
|
// Because the statistics of partition p1 are missing, the construction of global-level stats will fail.
|
|
tk.MustExec("analyze table t4 partition p1;")
|
|
tk.MustQuery("show warnings").Check(testkit.Rows("Warning 8131 Build global-level stats failed due to missing partition-level stats"))
|
|
// Although the global-level stats build failed, we build partition-level stats for partition p1 success.
|
|
result := tk.MustQuery("show stats_meta where table_name = 't4'").Sort()
|
|
c.Assert(len(result.Rows()), Equals, 1)
|
|
c.Assert(result.Rows()[0][5], Equals, "3")
|
|
// Now, we have the partition-level stats for partition p0. We need get the stats for partition p1. And build the global-level stats.
|
|
tk.MustExec("analyze table t4 partition p0;")
|
|
tk.MustQuery("show warnings").Check(testkit.Rows())
|
|
result = tk.MustQuery("show stats_meta where table_name = 't4'").Sort()
|
|
c.Assert(len(result.Rows()), Equals, 3)
|
|
c.Assert(result.Rows()[0][5], Equals, "5")
|
|
c.Assert(result.Rows()[1][5], Equals, "2")
|
|
c.Assert(result.Rows()[2][5], Equals, "3")
|
|
*/
|
|
}
|
|
|
|
func TestIssue15993(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t0")
|
|
tk.MustExec("CREATE TABLE t0(c0 INT PRIMARY KEY);")
|
|
tk.MustExec("set @@tidb_enable_fast_analyze=1;")
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
tk.MustExec("ANALYZE TABLE t0 INDEX PRIMARY;")
|
|
}
|
|
|
|
func TestIssue15751(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t0")
|
|
tk.MustExec("CREATE TABLE t0(c0 INT, c1 INT, PRIMARY KEY(c0, c1))")
|
|
tk.MustExec("INSERT INTO t0 VALUES (0, 0)")
|
|
tk.MustExec("set @@tidb_enable_fast_analyze=1")
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
tk.MustExec("ANALYZE TABLE t0")
|
|
}
|
|
|
|
func TestIssue15752(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t0")
|
|
tk.MustExec("CREATE TABLE t0(c0 INT)")
|
|
tk.MustExec("INSERT INTO t0 VALUES (0)")
|
|
tk.MustExec("CREATE INDEX i0 ON t0(c0)")
|
|
tk.MustExec("set @@tidb_enable_fast_analyze=1")
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
tk.MustExec("ANALYZE TABLE t0 INDEX i0")
|
|
}
|
|
|
|
type regionProperityClient struct {
|
|
tikv.Client
|
|
mu struct {
|
|
sync.Mutex
|
|
failedOnce bool
|
|
count int64
|
|
}
|
|
}
|
|
|
|
func (c *regionProperityClient) SendRequest(ctx context.Context, addr string, req *tikvrpc.Request, timeout time.Duration) (*tikvrpc.Response, error) {
|
|
if req.Type == tikvrpc.CmdDebugGetRegionProperties {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
c.mu.count++
|
|
// Mock failure once.
|
|
if !c.mu.failedOnce {
|
|
c.mu.failedOnce = true
|
|
return &tikvrpc.Response{}, nil
|
|
}
|
|
}
|
|
return c.Client.SendRequest(ctx, addr, req, timeout)
|
|
}
|
|
|
|
func TestFastAnalyzeRetryRowCount(t *testing.T) {
|
|
cli := ®ionProperityClient{}
|
|
hijackClient := func(c tikv.Client) tikv.Client {
|
|
cli.Client = c
|
|
return cli
|
|
}
|
|
|
|
var cls testutils.Cluster
|
|
store, err := mockstore.NewMockStore(
|
|
mockstore.WithClusterInspector(func(c testutils.Cluster) {
|
|
mockstore.BootstrapWithSingleStore(c)
|
|
cls = c
|
|
}),
|
|
mockstore.WithClientHijacker(hijackClient),
|
|
)
|
|
require.NoError(t, err)
|
|
defer func() {
|
|
err := store.Close()
|
|
require.NoError(t, err)
|
|
}()
|
|
dom, err := session.BootstrapSession(store)
|
|
require.NoError(t, err)
|
|
defer dom.Close()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists retry_row_count")
|
|
tk.MustExec("create table retry_row_count(a int primary key)")
|
|
tblInfo, err := dom.InfoSchema().TableByName(model.NewCIStr("test"), model.NewCIStr("retry_row_count"))
|
|
require.NoError(t, err)
|
|
tid := tblInfo.Meta().ID
|
|
require.NoError(t, dom.StatsHandle().Update(dom.InfoSchema()))
|
|
tk.MustExec("set @@session.tidb_enable_fast_analyze=1")
|
|
tk.MustExec("set @@session.tidb_build_stats_concurrency=1")
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
for i := 0; i < 30; i++ {
|
|
tk.MustExec(fmt.Sprintf("insert into retry_row_count values (%d)", i))
|
|
}
|
|
tableStart := tablecodec.GenTableRecordPrefix(tid)
|
|
cls.SplitKeys(tableStart, tableStart.PrefixNext(), 6)
|
|
// Flush the region cache first.
|
|
tk.MustQuery("select * from retry_row_count")
|
|
tk.MustExec("analyze table retry_row_count")
|
|
row := tk.MustQuery(`show stats_meta where db_name = "test" and table_name = "retry_row_count"`).Rows()[0]
|
|
require.Equal(t, "30", row[5])
|
|
}
|
|
|
|
func TestFailedAnalyzeRequest(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int primary key, b int, index index_b(b))")
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/executor/buildStatsFromResult", `return(true)`))
|
|
_, err := tk.Exec("analyze table t")
|
|
require.Equal(t, "mock buildStatsFromResult error", err.Error())
|
|
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/executor/buildStatsFromResult"))
|
|
}
|
|
|
|
func TestExtractTopN(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
dom, err := session.BootstrapSession(store)
|
|
require.NoError(t, err)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("create database if not exists test_extract_topn")
|
|
tk.MustExec("use test_extract_topn")
|
|
tk.MustExec("drop table if exists test_extract_topn")
|
|
tk.MustExec("create table test_extract_topn(a int primary key, b int, index index_b(b))")
|
|
tk.MustExec("set @@session.tidb_analyze_version=2")
|
|
for i := 0; i < 10; i++ {
|
|
tk.MustExec(fmt.Sprintf("insert into test_extract_topn values (%d, %d)", i, i))
|
|
}
|
|
for i := 0; i < 10; i++ {
|
|
tk.MustExec(fmt.Sprintf("insert into test_extract_topn values (%d, 0)", i+10))
|
|
}
|
|
tk.MustExec("analyze table test_extract_topn")
|
|
is := dom.InfoSchema()
|
|
table, err := is.TableByName(model.NewCIStr("test_extract_topn"), model.NewCIStr("test_extract_topn"))
|
|
require.NoError(t, err)
|
|
tblInfo := table.Meta()
|
|
tblStats := dom.StatsHandle().GetTableStats(tblInfo)
|
|
colStats := tblStats.Columns[tblInfo.Columns[1].ID]
|
|
require.Len(t, colStats.TopN.TopN, 10)
|
|
item := colStats.TopN.TopN[0]
|
|
require.Equal(t, uint64(11), item.Count)
|
|
idxStats := tblStats.Indices[tblInfo.Indices[0].ID]
|
|
require.Len(t, idxStats.TopN.TopN, 10)
|
|
idxItem := idxStats.TopN.TopN[0]
|
|
require.Equal(t, uint64(11), idxItem.Count)
|
|
// The columns are: DBName, table name, column name, is index, value, count.
|
|
tk.MustQuery("show stats_topn where column_name in ('b', 'index_b')").Sort().Check(testkit.Rows("test_extract_topn test_extract_topn b 0 0 11",
|
|
"test_extract_topn test_extract_topn b 0 1 1",
|
|
"test_extract_topn test_extract_topn b 0 2 1",
|
|
"test_extract_topn test_extract_topn b 0 3 1",
|
|
"test_extract_topn test_extract_topn b 0 4 1",
|
|
"test_extract_topn test_extract_topn b 0 5 1",
|
|
"test_extract_topn test_extract_topn b 0 6 1",
|
|
"test_extract_topn test_extract_topn b 0 7 1",
|
|
"test_extract_topn test_extract_topn b 0 8 1",
|
|
"test_extract_topn test_extract_topn b 0 9 1",
|
|
"test_extract_topn test_extract_topn index_b 1 0 11",
|
|
"test_extract_topn test_extract_topn index_b 1 1 1",
|
|
"test_extract_topn test_extract_topn index_b 1 2 1",
|
|
"test_extract_topn test_extract_topn index_b 1 3 1",
|
|
"test_extract_topn test_extract_topn index_b 1 4 1",
|
|
"test_extract_topn test_extract_topn index_b 1 5 1",
|
|
"test_extract_topn test_extract_topn index_b 1 6 1",
|
|
"test_extract_topn test_extract_topn index_b 1 7 1",
|
|
"test_extract_topn test_extract_topn index_b 1 8 1",
|
|
"test_extract_topn test_extract_topn index_b 1 9 1",
|
|
))
|
|
}
|
|
|
|
func TestHashInTopN(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
dom, err := session.BootstrapSession(store)
|
|
require.NoError(t, err)
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b float, c decimal(30, 10), d varchar(20))")
|
|
tk.MustExec(`insert into t values
|
|
(1, 1.1, 11.1, "0110"),
|
|
(2, 2.2, 22.2, "0110"),
|
|
(3, 3.3, 33.3, "0110"),
|
|
(4, 4.4, 44.4, "0440")`)
|
|
for i := 0; i < 3; i++ {
|
|
tk.MustExec("insert into t select * from t")
|
|
}
|
|
tk.MustExec("set @@tidb_analyze_version = 1")
|
|
// get stats of normal analyze
|
|
tk.MustExec("analyze table t")
|
|
is := dom.InfoSchema()
|
|
tbl, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
|
|
require.NoError(t, err)
|
|
tblInfo := tbl.Meta()
|
|
tblStats1 := dom.StatsHandle().GetTableStats(tblInfo).Copy()
|
|
// get stats of fast analyze
|
|
tk.MustExec("set @@tidb_enable_fast_analyze = 1")
|
|
tk.MustExec("analyze table t")
|
|
tblStats2 := dom.StatsHandle().GetTableStats(tblInfo).Copy()
|
|
// check the hash for topn
|
|
for _, col := range tblInfo.Columns {
|
|
topn1 := tblStats1.Columns[col.ID].TopN.TopN
|
|
cm2 := tblStats2.Columns[col.ID].TopN
|
|
for _, topnMeta := range topn1 {
|
|
count2, exists := cm2.QueryTopN(topnMeta.Encoded)
|
|
require.True(t, exists)
|
|
require.Equal(t, topnMeta.Count, count2)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNormalAnalyzeOnCommonHandle(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t1, t2, t3, t4")
|
|
tk.Session().GetSessionVars().EnableClusteredIndex = variable.ClusteredIndexDefModeOn
|
|
tk.MustExec("CREATE TABLE t1 (a int primary key, b int)")
|
|
tk.MustExec("insert into t1 values(1,1), (2,2), (3,3)")
|
|
tk.MustExec("CREATE TABLE t2 (a varchar(255) primary key, b int)")
|
|
tk.MustExec("insert into t2 values(\"111\",1), (\"222\",2), (\"333\",3)")
|
|
tk.MustExec("CREATE TABLE t3 (a int, b int, c int, primary key (a, b), key(c))")
|
|
tk.MustExec("insert into t3 values(1,1,1), (2,2,2), (3,3,3)")
|
|
|
|
// Version2 is tested in TestStatsVer2.
|
|
tk.MustExec("set@@tidb_analyze_version=1")
|
|
tk.MustExec("analyze table t1, t2, t3")
|
|
|
|
tk.MustQuery(`show stats_buckets where table_name in ("t1", "t2", "t3")`).Sort().Check(testkit.Rows(
|
|
"test t1 a 0 0 1 1 1 1 0",
|
|
"test t1 a 0 1 2 1 2 2 0",
|
|
"test t1 a 0 2 3 1 3 3 0",
|
|
"test t1 b 0 0 1 1 1 1 0",
|
|
"test t1 b 0 1 2 1 2 2 0",
|
|
"test t1 b 0 2 3 1 3 3 0",
|
|
"test t2 PRIMARY 1 0 1 1 111 111 0",
|
|
"test t2 PRIMARY 1 1 2 1 222 222 0",
|
|
"test t2 PRIMARY 1 2 3 1 333 333 0",
|
|
"test t2 a 0 0 1 1 111 111 0",
|
|
"test t2 a 0 1 2 1 222 222 0",
|
|
"test t2 a 0 2 3 1 333 333 0",
|
|
"test t2 b 0 0 1 1 1 1 0",
|
|
"test t2 b 0 1 2 1 2 2 0",
|
|
"test t2 b 0 2 3 1 3 3 0",
|
|
"test t3 PRIMARY 1 0 1 1 (1, 1) (1, 1) 0",
|
|
"test t3 PRIMARY 1 1 2 1 (2, 2) (2, 2) 0",
|
|
"test t3 PRIMARY 1 2 3 1 (3, 3) (3, 3) 0",
|
|
"test t3 a 0 0 1 1 1 1 0",
|
|
"test t3 a 0 1 2 1 2 2 0",
|
|
"test t3 a 0 2 3 1 3 3 0",
|
|
"test t3 b 0 0 1 1 1 1 0",
|
|
"test t3 b 0 1 2 1 2 2 0",
|
|
"test t3 b 0 2 3 1 3 3 0",
|
|
"test t3 c 0 0 1 1 1 1 0",
|
|
"test t3 c 0 1 2 1 2 2 0",
|
|
"test t3 c 0 2 3 1 3 3 0",
|
|
"test t3 c 1 0 1 1 1 1 0",
|
|
"test t3 c 1 1 2 1 2 2 0",
|
|
"test t3 c 1 2 3 1 3 3 0"))
|
|
}
|
|
|
|
func TestDefaultValForAnalyze(t *testing.T) {
|
|
t.Skip("skip race test")
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("drop database if exists test_default_val_for_analyze;")
|
|
tk.MustExec("create database test_default_val_for_analyze;")
|
|
tk.MustExec("use test_default_val_for_analyze")
|
|
|
|
tk.MustExec("create table t (a int, key(a));")
|
|
for i := 0; i < 2048; i++ {
|
|
tk.MustExec("insert into t values (0)")
|
|
}
|
|
for i := 1; i < 4; i++ {
|
|
tk.MustExec("insert into t values (?)", i)
|
|
}
|
|
tk.MustQuery("select @@tidb_enable_fast_analyze").Check(testkit.Rows("0"))
|
|
tk.MustQuery("select @@session.tidb_enable_fast_analyze").Check(testkit.Rows("0"))
|
|
tk.MustExec("analyze table t with 0 topn;")
|
|
tk.MustQuery("explain format = 'brief' select * from t where a = 1").Check(testkit.Rows("IndexReader_6 512.00 root index:IndexRangeScan_5",
|
|
"└─IndexRangeScan_5 512.00 cop[tikv] table:t, index:a(a) range:[1,1], keep order:false"))
|
|
tk.MustQuery("explain format = 'brief' select * from t where a = 999").Check(testkit.Rows("IndexReader_6 0.00 root index:IndexRangeScan_5",
|
|
"└─IndexRangeScan_5 0.00 cop[tikv] table:t, index:a(a) range:[999,999], keep order:false"))
|
|
|
|
tk.MustExec("drop table t;")
|
|
tk.MustExec("create table t (a int, key(a));")
|
|
for i := 0; i < 2048; i++ {
|
|
tk.MustExec("insert into t values (0)")
|
|
}
|
|
for i := 1; i < 2049; i++ {
|
|
tk.MustExec("insert into t values (?)", i)
|
|
}
|
|
tk.MustExec("analyze table t with 0 topn;")
|
|
tk.MustQuery("explain format = 'brief' select * from t where a = 1").Check(testkit.Rows("IndexReader_6 1.00 root index:IndexRangeScan_5",
|
|
"└─IndexRangeScan_5 1.00 cop[tikv] table:t, index:a(a) range:[1,1], keep order:false"))
|
|
}
|
|
|
|
func TestAnalyzeFullSamplingOnIndexWithVirtualColumnOrPrefixColumn(t *testing.T) {
|
|
t.Skip("unstable, skip it and fix it before 20210624")
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists sampling_index_virtual_col")
|
|
tk.MustExec("create table sampling_index_virtual_col(a int, b int as (a+1), index idx(b))")
|
|
tk.MustExec("insert into sampling_index_virtual_col (a) values (1), (2), (null), (3), (4), (null), (5), (5), (5), (5)")
|
|
tk.MustExec("set @@session.tidb_analyze_version = 2")
|
|
tk.MustExec("analyze table sampling_index_virtual_col with 1 topn")
|
|
tk.MustQuery("show stats_buckets where table_name = 'sampling_index_virtual_col' and column_name = 'idx'").Check(testkit.Rows(
|
|
"test sampling_index_virtual_col idx 1 0 1 1 2 2 0",
|
|
"test sampling_index_virtual_col idx 1 1 2 1 3 3 0",
|
|
"test sampling_index_virtual_col idx 1 2 3 1 4 4 0",
|
|
"test sampling_index_virtual_col idx 1 3 4 1 5 5 0"))
|
|
tk.MustQuery("show stats_topn where table_name = 'sampling_index_virtual_col' and column_name = 'idx'").Check(testkit.Rows("test sampling_index_virtual_col idx 1 6 4"))
|
|
row := tk.MustQuery(`show stats_histograms where db_name = "test" and table_name = "sampling_index_virtual_col"`).Rows()[0]
|
|
// The NDV.
|
|
require.Equal(t, "5", row[6])
|
|
// The NULLs.
|
|
require.Equal(t, "2", row[7])
|
|
tk.MustExec("drop table if exists sampling_index_prefix_col")
|
|
tk.MustExec("create table sampling_index_prefix_col(a varchar(3), index idx(a(1)))")
|
|
tk.MustExec("insert into sampling_index_prefix_col (a) values ('aa'), ('ab'), ('ac'), ('bb')")
|
|
tk.MustExec("analyze table sampling_index_prefix_col with 1 topn")
|
|
tk.MustQuery("show stats_buckets where table_name = 'sampling_index_prefix_col' and column_name = 'idx'").Check(testkit.Rows(
|
|
"test sampling_index_prefix_col idx 1 0 1 1 b b 0",
|
|
))
|
|
tk.MustQuery("show stats_topn where table_name = 'sampling_index_prefix_col' and column_name = 'idx'").Check(testkit.Rows("test sampling_index_prefix_col idx 1 a 3"))
|
|
}
|
|
|
|
func TestSnapshotAnalyze(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, index index_a(a))")
|
|
is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
|
|
tbl, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
|
|
require.NoError(t, err)
|
|
tblInfo := tbl.Meta()
|
|
tid := tblInfo.ID
|
|
tk.MustExec("insert into t values(1),(1),(1)")
|
|
tk.MustExec("begin")
|
|
txn, err := tk.Session().Txn(false)
|
|
require.NoError(t, err)
|
|
startTS1 := txn.StartTS()
|
|
tk.MustExec("commit")
|
|
tk.MustExec("insert into t values(2),(2),(2)")
|
|
tk.MustExec("begin")
|
|
txn, err = tk.Session().Txn(false)
|
|
require.NoError(t, err)
|
|
startTS2 := txn.StartTS()
|
|
tk.MustExec("commit")
|
|
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/executor/injectAnalyzeSnapshot", fmt.Sprintf("return(%d)", startTS1)))
|
|
tk.MustExec("analyze table t")
|
|
rows := tk.MustQuery(fmt.Sprintf("select count, snapshot from mysql.stats_meta where table_id = %d", tid)).Rows()
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "3", rows[0][0])
|
|
s1Str := rows[0][1].(string)
|
|
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/executor/injectAnalyzeSnapshot", fmt.Sprintf("return(%d)", startTS2)))
|
|
tk.MustExec("analyze table t")
|
|
rows = tk.MustQuery(fmt.Sprintf("select count, snapshot from mysql.stats_meta where table_id = %d", tid)).Rows()
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "6", rows[0][0])
|
|
s2Str := rows[0][1].(string)
|
|
require.True(t, s1Str != s2Str)
|
|
tk.MustExec("set @@session.tidb_analyze_version = 2")
|
|
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/executor/injectAnalyzeSnapshot", fmt.Sprintf("return(%d)", startTS1)))
|
|
tk.MustExec("analyze table t")
|
|
rows = tk.MustQuery(fmt.Sprintf("select count, snapshot from mysql.stats_meta where table_id = %d", tid)).Rows()
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "6", rows[0][0])
|
|
s3Str := rows[0][1].(string)
|
|
require.Equal(t, s2Str, s3Str)
|
|
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/executor/injectAnalyzeSnapshot"))
|
|
}
|
|
|
|
func TestAdjustSampleRateNote(t *testing.T) {
|
|
store, clean := testkit.CreateMockStore(t)
|
|
defer clean()
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
statsHandle := domain.GetDomain(tk.Session().(sessionctx.Context)).StatsHandle()
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, index index_a(a))")
|
|
require.NoError(t, statsHandle.HandleDDLEvent(<-statsHandle.DDLEventCh()))
|
|
is := tk.Session().(sessionctx.Context).GetInfoSchema().(infoschema.InfoSchema)
|
|
tbl, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
|
|
require.NoError(t, err)
|
|
tblInfo := tbl.Meta()
|
|
tid := tblInfo.ID
|
|
tk.MustExec(fmt.Sprintf("update mysql.stats_meta set count = 220000 where table_id=%d", tid))
|
|
require.NoError(t, statsHandle.Update(is))
|
|
result := tk.MustQuery("show stats_meta where table_name = 't'")
|
|
require.Equal(t, "220000", result.Rows()[0][5])
|
|
tk.MustExec("analyze table t")
|
|
tk.MustQuery("show warnings").Check(testkit.Rows("Note 1105 Analyze use auto adjusted sample rate 0.500000 for table test.t."))
|
|
tk.MustExec("insert into t values(1),(1),(1)")
|
|
require.NoError(t, statsHandle.DumpStatsDeltaToKV(handle.DumpAll))
|
|
require.NoError(t, statsHandle.Update(is))
|
|
result = tk.MustQuery("show stats_meta where table_name = 't'")
|
|
require.Equal(t, "3", result.Rows()[0][5])
|
|
tk.MustExec("analyze table t")
|
|
tk.MustQuery("show warnings").Check(testkit.Rows("Note 1105 Analyze use auto adjusted sample rate 1.000000 for table test.t."))
|
|
}
|