1757 lines
94 KiB
Go
1757 lines
94 KiB
Go
// Copyright 2015 PingCAP, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package variable
|
|
|
|
import (
|
|
"fmt"
|
|
"math"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"github.com/cznic/mathutil"
|
|
"github.com/pingcap/errors"
|
|
"github.com/pingcap/parser/charset"
|
|
"github.com/pingcap/parser/mysql"
|
|
"github.com/pingcap/tidb/config"
|
|
"github.com/pingcap/tidb/kv"
|
|
tikvstore "github.com/pingcap/tidb/store/tikv/kv"
|
|
"github.com/pingcap/tidb/store/tikv/oracle"
|
|
"github.com/pingcap/tidb/types"
|
|
"github.com/pingcap/tidb/util/collate"
|
|
"github.com/pingcap/tidb/util/logutil"
|
|
"github.com/pingcap/tidb/util/versioninfo"
|
|
atomic2 "go.uber.org/atomic"
|
|
)
|
|
|
|
// ScopeFlag is for system variable whether can be changed in global/session dynamically or not.
|
|
type ScopeFlag uint8
|
|
|
|
// TypeFlag is the SysVar type, which doesn't exactly match MySQL types.
|
|
type TypeFlag byte
|
|
|
|
const (
|
|
// ScopeNone means the system variable can not be changed dynamically.
|
|
ScopeNone ScopeFlag = 0
|
|
// ScopeGlobal means the system variable can be changed globally.
|
|
ScopeGlobal ScopeFlag = 1 << 0
|
|
// ScopeSession means the system variable can only be changed in current session.
|
|
ScopeSession ScopeFlag = 1 << 1
|
|
|
|
// TypeStr is the default
|
|
TypeStr TypeFlag = 0
|
|
// TypeBool for boolean
|
|
TypeBool TypeFlag = 1
|
|
// TypeInt for integer
|
|
TypeInt TypeFlag = 2
|
|
// TypeEnum for Enum
|
|
TypeEnum TypeFlag = 3
|
|
// TypeFloat for Double
|
|
TypeFloat TypeFlag = 4
|
|
// TypeUnsigned for Unsigned integer
|
|
TypeUnsigned TypeFlag = 5
|
|
// TypeTime for time of day (a TiDB extension)
|
|
TypeTime TypeFlag = 6
|
|
// TypeDuration for a golang duration (a TiDB extension)
|
|
TypeDuration TypeFlag = 7
|
|
|
|
// On is the canonical string for ON
|
|
On = "ON"
|
|
// Off is the canonical string for OFF
|
|
Off = "OFF"
|
|
// Warn means return warnings
|
|
Warn = "WARN"
|
|
// IntOnly means enable for int type
|
|
IntOnly = "INT_ONLY"
|
|
)
|
|
|
|
// SysVar is for system variable.
|
|
type SysVar struct {
|
|
// Scope is for whether can be changed or not
|
|
Scope ScopeFlag
|
|
// Name is the variable name.
|
|
Name string
|
|
// Value is the variable value.
|
|
Value string
|
|
// Type is the MySQL type (optional)
|
|
Type TypeFlag
|
|
// MinValue will automatically be validated when specified (optional)
|
|
MinValue int64
|
|
// MaxValue will automatically be validated when specified (optional)
|
|
MaxValue uint64
|
|
// AutoConvertNegativeBool applies to boolean types (optional)
|
|
AutoConvertNegativeBool bool
|
|
// AutoConvertOutOfRange applies to int and unsigned types.
|
|
AutoConvertOutOfRange bool
|
|
// ReadOnly applies to all types
|
|
ReadOnly bool
|
|
// PossibleValues applies to ENUM type
|
|
PossibleValues []string
|
|
// AllowEmpty is a special TiDB behavior which means "read value from config" (do not use)
|
|
AllowEmpty bool
|
|
// AllowEmptyAll is a special behavior that only applies to TiDBCapturePlanBaseline, TiDBTxnMode (do not use)
|
|
AllowEmptyAll bool
|
|
// AllowAutoValue means that the special value "-1" is permitted, even when outside of range.
|
|
AllowAutoValue bool
|
|
// Validation is a callback after the type validation has been performed, but before the Set function
|
|
Validation func(*SessionVars, string, string, ScopeFlag) (string, error)
|
|
// SetSession is called after validation but before updating systems[]. It also doubles as an Init function
|
|
// and will be called on all variables in builtinGlobalVariable, regardless of their scope.
|
|
SetSession func(*SessionVars, string) error
|
|
// SetGlobal is called after validation
|
|
SetGlobal func(*SessionVars, string) error
|
|
// IsHintUpdatable indicate whether it's updatable via SET_VAR() hint (optional)
|
|
IsHintUpdatable bool
|
|
// Hidden means that it still responds to SET but doesn't show up in SHOW VARIABLES
|
|
Hidden bool
|
|
// Aliases is a list of sysvars that should also be updated when this sysvar is updated.
|
|
// Updating aliases calls the SET function of the aliases, but does not update their aliases (preventing SET recursion)
|
|
Aliases []string
|
|
}
|
|
|
|
// SetSessionFromHook calls the SetSession func if it exists.
|
|
func (sv *SysVar) SetSessionFromHook(s *SessionVars, val string) error {
|
|
if sv.SetSession != nil {
|
|
if err := sv.SetSession(s, val); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
s.systems[sv.Name] = val
|
|
|
|
// Call the Set function on all the aliases for this sysVar
|
|
// Skipping the validation function, and not calling aliases of
|
|
// aliases. By skipping the validation function it means that things
|
|
// like duplicate warnings should not appear.
|
|
|
|
if sv.Aliases != nil {
|
|
for _, aliasName := range sv.Aliases {
|
|
aliasSv := GetSysVar(aliasName)
|
|
if aliasSv.SetSession != nil {
|
|
if err := aliasSv.SetSession(s, val); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
s.systems[aliasSv.Name] = val
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SetGlobalFromHook calls the SetGlobal func if it exists.
|
|
func (sv *SysVar) SetGlobalFromHook(s *SessionVars, val string, skipAliases bool) error {
|
|
if sv.SetGlobal != nil {
|
|
return sv.SetGlobal(s, val)
|
|
}
|
|
|
|
// Call the SetGlobalSysVarOnly function on all the aliases for this sysVar
|
|
// which skips the validation function and when SetGlobalFromHook is called again
|
|
// it will be with skipAliases=true. This helps break recursion because
|
|
// most aliases are reciprocal.
|
|
|
|
if !skipAliases && sv.Aliases != nil {
|
|
for _, aliasName := range sv.Aliases {
|
|
if err := s.GlobalVarsAccessor.SetGlobalSysVarOnly(aliasName, val); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// HasNoneScope returns true if the scope for the sysVar is None.
|
|
func (sv *SysVar) HasNoneScope() bool {
|
|
return sv.Scope == ScopeNone
|
|
}
|
|
|
|
// HasSessionScope returns true if the scope for the sysVar includes session.
|
|
func (sv *SysVar) HasSessionScope() bool {
|
|
return sv.Scope&ScopeSession != 0
|
|
}
|
|
|
|
// HasGlobalScope returns true if the scope for the sysVar includes global.
|
|
func (sv *SysVar) HasGlobalScope() bool {
|
|
return sv.Scope&ScopeGlobal != 0
|
|
}
|
|
|
|
// Validate checks if system variable satisfies specific restriction.
|
|
func (sv *SysVar) Validate(vars *SessionVars, value string, scope ScopeFlag) (string, error) {
|
|
// Normalize the value and apply validation based on type.
|
|
// i.e. TypeBool converts 1/on/ON to ON.
|
|
normalizedValue, err := sv.validateFromType(vars, value, scope)
|
|
if err != nil {
|
|
return normalizedValue, err
|
|
}
|
|
// If type validation was successful, call the (optional) validation function
|
|
if sv.Validation != nil {
|
|
return sv.Validation(vars, normalizedValue, value, scope)
|
|
}
|
|
return normalizedValue, nil
|
|
}
|
|
|
|
// validateFromType provides automatic validation based on the SysVar's type
|
|
func (sv *SysVar) validateFromType(vars *SessionVars, value string, scope ScopeFlag) (string, error) {
|
|
// Check that the scope is correct and return the appropriate error message.
|
|
if sv.ReadOnly || sv.Scope == ScopeNone {
|
|
return value, ErrIncorrectScope.FastGenByArgs(sv.Name, "read only")
|
|
}
|
|
if scope == ScopeGlobal && !sv.HasGlobalScope() {
|
|
return value, errLocalVariable.FastGenByArgs(sv.Name)
|
|
}
|
|
if scope == ScopeSession && !sv.HasSessionScope() {
|
|
return value, errGlobalVariable.FastGenByArgs(sv.Name)
|
|
}
|
|
|
|
// The string "DEFAULT" is a special keyword in MySQL, which restores
|
|
// the compiled sysvar value. In which case we can skip further validation.
|
|
if strings.EqualFold(value, "DEFAULT") {
|
|
return sv.Value, nil
|
|
}
|
|
// Some sysvars in TiDB have a special behavior where the empty string means
|
|
// "use the config file value". This needs to be cleaned up once the behavior
|
|
// for instance variables is determined.
|
|
if value == "" && ((sv.AllowEmpty && scope == ScopeSession) || sv.AllowEmptyAll) {
|
|
return value, nil
|
|
}
|
|
// Provide validation using the SysVar struct
|
|
switch sv.Type {
|
|
case TypeUnsigned:
|
|
return sv.checkUInt64SystemVar(value, vars)
|
|
case TypeInt:
|
|
return sv.checkInt64SystemVar(value, vars)
|
|
case TypeBool:
|
|
return sv.checkBoolSystemVar(value, vars)
|
|
case TypeFloat:
|
|
return sv.checkFloatSystemVar(value, vars)
|
|
case TypeEnum:
|
|
return sv.checkEnumSystemVar(value, vars)
|
|
case TypeTime:
|
|
return sv.checkTimeSystemVar(value, vars)
|
|
case TypeDuration:
|
|
return sv.checkDurationSystemVar(value, vars)
|
|
}
|
|
return value, nil // typeString
|
|
}
|
|
|
|
const (
|
|
localDayTimeFormat = "15:04"
|
|
// FullDayTimeFormat is the full format of analyze start time and end time.
|
|
FullDayTimeFormat = "15:04 -0700"
|
|
)
|
|
|
|
func (sv *SysVar) checkTimeSystemVar(value string, vars *SessionVars) (string, error) {
|
|
var t time.Time
|
|
var err error
|
|
if len(value) <= len(localDayTimeFormat) {
|
|
t, err = time.ParseInLocation(localDayTimeFormat, value, vars.TimeZone)
|
|
} else {
|
|
t, err = time.ParseInLocation(FullDayTimeFormat, value, vars.TimeZone)
|
|
}
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return t.Format(FullDayTimeFormat), nil
|
|
}
|
|
|
|
func (sv *SysVar) checkDurationSystemVar(value string, vars *SessionVars) (string, error) {
|
|
d, err := time.ParseDuration(value)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
// Check for min/max violations
|
|
if int64(d) < sv.MinValue {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if uint64(d) > sv.MaxValue {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
// return a string representation of the duration
|
|
return d.String(), nil
|
|
}
|
|
|
|
func (sv *SysVar) checkUInt64SystemVar(value string, vars *SessionVars) (string, error) {
|
|
if sv.AllowAutoValue && value == "-1" {
|
|
return value, nil
|
|
}
|
|
// There are two types of validation behaviors for integer values. The default
|
|
// is to return an error saying the value is out of range. For MySQL compatibility, some
|
|
// values prefer convert the value to the min/max and return a warning.
|
|
if !sv.AutoConvertOutOfRange {
|
|
return sv.checkUint64SystemVarWithError(value)
|
|
}
|
|
if len(value) == 0 {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if value[0] == '-' {
|
|
_, err := strconv.ParseInt(value, 10, 64)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
vars.StmtCtx.AppendWarning(ErrTruncatedWrongValue.GenWithStackByArgs(sv.Name, value))
|
|
return fmt.Sprintf("%d", sv.MinValue), nil
|
|
}
|
|
val, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if val < uint64(sv.MinValue) {
|
|
vars.StmtCtx.AppendWarning(ErrTruncatedWrongValue.GenWithStackByArgs(sv.Name, value))
|
|
return fmt.Sprintf("%d", sv.MinValue), nil
|
|
}
|
|
if val > sv.MaxValue {
|
|
vars.StmtCtx.AppendWarning(ErrTruncatedWrongValue.GenWithStackByArgs(sv.Name, value))
|
|
return fmt.Sprintf("%d", sv.MaxValue), nil
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
func (sv *SysVar) checkInt64SystemVar(value string, vars *SessionVars) (string, error) {
|
|
if sv.AllowAutoValue && value == "-1" {
|
|
return value, nil
|
|
}
|
|
// There are two types of validation behaviors for integer values. The default
|
|
// is to return an error saying the value is out of range. For MySQL compatibility, some
|
|
// values prefer convert the value to the min/max and return a warning.
|
|
if !sv.AutoConvertOutOfRange {
|
|
return sv.checkInt64SystemVarWithError(value)
|
|
}
|
|
val, err := strconv.ParseInt(value, 10, 64)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if val < sv.MinValue {
|
|
vars.StmtCtx.AppendWarning(ErrTruncatedWrongValue.GenWithStackByArgs(sv.Name, value))
|
|
return fmt.Sprintf("%d", sv.MinValue), nil
|
|
}
|
|
if val > int64(sv.MaxValue) {
|
|
vars.StmtCtx.AppendWarning(ErrTruncatedWrongValue.GenWithStackByArgs(sv.Name, value))
|
|
return fmt.Sprintf("%d", sv.MaxValue), nil
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
func (sv *SysVar) checkEnumSystemVar(value string, vars *SessionVars) (string, error) {
|
|
// The value could be either a string or the ordinal position in the PossibleValues.
|
|
// This allows for the behavior 0 = OFF, 1 = ON, 2 = DEMAND etc.
|
|
var iStr string
|
|
for i, v := range sv.PossibleValues {
|
|
iStr = fmt.Sprintf("%d", i)
|
|
if strings.EqualFold(value, v) || strings.EqualFold(value, iStr) {
|
|
return v, nil
|
|
}
|
|
}
|
|
return value, ErrWrongValueForVar.GenWithStackByArgs(sv.Name, value)
|
|
}
|
|
|
|
func (sv *SysVar) checkFloatSystemVar(value string, vars *SessionVars) (string, error) {
|
|
if len(value) == 0 {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
val, err := strconv.ParseFloat(value, 64)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if val < float64(sv.MinValue) || val > float64(sv.MaxValue) {
|
|
return value, ErrWrongValueForVar.GenWithStackByArgs(sv.Name, value)
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
func (sv *SysVar) checkBoolSystemVar(value string, vars *SessionVars) (string, error) {
|
|
if strings.EqualFold(value, "ON") {
|
|
return On, nil
|
|
} else if strings.EqualFold(value, "OFF") {
|
|
return Off, nil
|
|
}
|
|
val, err := strconv.ParseInt(value, 10, 64)
|
|
if err == nil {
|
|
// There are two types of conversion rules for integer values.
|
|
// The default only allows 0 || 1, but a subset of values convert any
|
|
// negative integer to 1.
|
|
if !sv.AutoConvertNegativeBool {
|
|
if val == 0 {
|
|
return Off, nil
|
|
} else if val == 1 {
|
|
return On, nil
|
|
}
|
|
} else {
|
|
if val == 1 || val < 0 {
|
|
return On, nil
|
|
} else if val == 0 {
|
|
return Off, nil
|
|
}
|
|
}
|
|
}
|
|
return value, ErrWrongValueForVar.GenWithStackByArgs(sv.Name, value)
|
|
}
|
|
|
|
func (sv *SysVar) checkUint64SystemVarWithError(value string) (string, error) {
|
|
if len(value) == 0 {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if value[0] == '-' {
|
|
// // in strict it expects the error WrongValue, but in non-strict it returns WrongType
|
|
return value, ErrWrongValueForVar.GenWithStackByArgs(sv.Name, value)
|
|
}
|
|
val, err := strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if val < uint64(sv.MinValue) || val > sv.MaxValue {
|
|
return value, ErrWrongValueForVar.GenWithStackByArgs(sv.Name, value)
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
func (sv *SysVar) checkInt64SystemVarWithError(value string) (string, error) {
|
|
if len(value) == 0 {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
val, err := strconv.ParseInt(value, 10, 64)
|
|
if err != nil {
|
|
return value, ErrWrongTypeForVar.GenWithStackByArgs(sv.Name)
|
|
}
|
|
if val < sv.MinValue || val > int64(sv.MaxValue) {
|
|
return value, ErrWrongValueForVar.GenWithStackByArgs(sv.Name, value)
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
// GetNativeValType attempts to convert the val to the approx MySQL non-string type
|
|
func (sv *SysVar) GetNativeValType(val string) (types.Datum, byte, uint) {
|
|
switch sv.Type {
|
|
case TypeUnsigned:
|
|
u, err := strconv.ParseUint(val, 10, 64)
|
|
if err != nil {
|
|
u = 0
|
|
}
|
|
return types.NewUintDatum(u), mysql.TypeLonglong, mysql.UnsignedFlag
|
|
case TypeBool:
|
|
optVal := int64(0) // OFF
|
|
if TiDBOptOn(val) {
|
|
optVal = 1
|
|
}
|
|
return types.NewIntDatum(optVal), mysql.TypeLong, 0
|
|
}
|
|
return types.NewStringDatum(val), mysql.TypeVarString, 0
|
|
}
|
|
|
|
var sysVars map[string]*SysVar
|
|
var sysVarsLock sync.RWMutex
|
|
|
|
// RegisterSysVar adds a sysvar to the SysVars list
|
|
func RegisterSysVar(sv *SysVar) {
|
|
name := strings.ToLower(sv.Name)
|
|
sysVarsLock.Lock()
|
|
sysVars[name] = sv
|
|
sysVarsLock.Unlock()
|
|
}
|
|
|
|
// UnregisterSysVar removes a sysvar from the SysVars list
|
|
// currently only used in tests.
|
|
func UnregisterSysVar(name string) {
|
|
name = strings.ToLower(name)
|
|
sysVarsLock.Lock()
|
|
delete(sysVars, name)
|
|
sysVarsLock.Unlock()
|
|
}
|
|
|
|
// GetSysVar returns sys var info for name as key.
|
|
func GetSysVar(name string) *SysVar {
|
|
name = strings.ToLower(name)
|
|
sysVarsLock.RLock()
|
|
defer sysVarsLock.RUnlock()
|
|
return sysVars[name]
|
|
}
|
|
|
|
// SetSysVar sets a sysvar. This will not propagate to the cluster, so it should only be
|
|
// used for instance scoped AUTO variables such as system_time_zone.
|
|
func SetSysVar(name string, value string) {
|
|
name = strings.ToLower(name)
|
|
sysVarsLock.Lock()
|
|
defer sysVarsLock.Unlock()
|
|
sysVars[name].Value = value
|
|
}
|
|
|
|
// GetSysVars returns the sysVars list under a RWLock
|
|
func GetSysVars() map[string]*SysVar {
|
|
sysVarsLock.RLock()
|
|
defer sysVarsLock.RUnlock()
|
|
return sysVars
|
|
}
|
|
|
|
// PluginVarNames is global plugin var names set.
|
|
var PluginVarNames []string
|
|
|
|
func init() {
|
|
sysVars = make(map[string]*SysVar)
|
|
for _, v := range defaultSysVars {
|
|
RegisterSysVar(v)
|
|
}
|
|
for _, v := range noopSysVars {
|
|
RegisterSysVar(v)
|
|
}
|
|
}
|
|
|
|
var defaultSysVars = []*SysVar{
|
|
{Scope: ScopeGlobal, Name: MaxConnections, Value: "151", Type: TypeUnsigned, MinValue: 1, MaxValue: 100000, AutoConvertOutOfRange: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: SQLSelectLimit, Value: "18446744073709551615", Type: TypeUnsigned, MinValue: 0, MaxValue: math.MaxUint64, AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
result, err := strconv.ParseUint(val, 10, 64)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
s.SelectLimit = result
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: DefaultWeekFormat, Value: "0", Type: TypeUnsigned, MinValue: 0, MaxValue: 7, AutoConvertOutOfRange: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: SQLModeVar, Value: mysql.DefaultSQLMode, IsHintUpdatable: true, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
// Ensure the SQL mode parses
|
|
normalizedValue = mysql.FormatSQLModeStr(normalizedValue)
|
|
if _, err := mysql.GetSQLMode(normalizedValue); err != nil {
|
|
return originalValue, err
|
|
}
|
|
return normalizedValue, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
val = mysql.FormatSQLModeStr(val)
|
|
// Modes is a list of different modes separated by commas.
|
|
sqlMode, err := mysql.GetSQLMode(val)
|
|
if err != nil {
|
|
return errors.Trace(err)
|
|
}
|
|
s.StrictSQLMode = sqlMode.HasStrictMode()
|
|
s.SQLMode = sqlMode
|
|
s.SetStatusFlag(mysql.ServerStatusNoBackslashEscaped, sqlMode.HasNoBackslashEscapesMode())
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: MaxExecutionTime, Value: "0", Type: TypeUnsigned, MinValue: 0, MaxValue: math.MaxUint64, AutoConvertOutOfRange: true, IsHintUpdatable: true, SetSession: func(s *SessionVars, val string) error {
|
|
timeoutMS := tidbOptPositiveInt32(val, 0)
|
|
s.MaxExecutionTime = uint64(timeoutMS)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CollationServer, Value: mysql.DefaultCollationName, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCollation(vars, normalizedValue, originalValue, scope)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
if coll, err := collate.GetCollationByName(val); err == nil {
|
|
s.systems[CharacterSetServer] = coll.CharsetName
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: SQLLogBin, Value: On, Type: TypeBool},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TimeZone, Value: "SYSTEM", IsHintUpdatable: true, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if strings.EqualFold(normalizedValue, "SYSTEM") {
|
|
return "SYSTEM", nil
|
|
}
|
|
_, err := parseTimeZone(normalizedValue)
|
|
return normalizedValue, err
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
tz, err := parseTimeZone(val)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
s.TimeZone = tz
|
|
return nil
|
|
}},
|
|
{Scope: ScopeNone, Name: SystemTimeZone, Value: "CST"},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: ForeignKeyChecks, Value: Off, Type: TypeBool, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if TiDBOptOn(normalizedValue) {
|
|
// TiDB does not yet support foreign keys.
|
|
// Return the original value in the warning, so that users are not confused.
|
|
vars.StmtCtx.AppendWarning(ErrUnsupportedValueForVar.GenWithStackByArgs(ForeignKeyChecks, originalValue))
|
|
return Off, nil
|
|
} else if !TiDBOptOn(normalizedValue) {
|
|
return Off, nil
|
|
}
|
|
return normalizedValue, ErrWrongValueForVar.GenWithStackByArgs(ForeignKeyChecks, originalValue)
|
|
}},
|
|
{Scope: ScopeNone, Name: Hostname, Value: ServerHostname},
|
|
{Scope: ScopeSession, Name: Timestamp, Value: ""},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CharacterSetFilesystem, Value: "binary", Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCharacterSet(normalizedValue, CharacterSetFilesystem)
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CollationDatabase, Value: mysql.DefaultCollationName, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCollation(vars, normalizedValue, originalValue, scope)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
if coll, err := collate.GetCollationByName(val); err == nil {
|
|
s.systems[CharsetDatabase] = coll.CharsetName
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: AutoIncrementIncrement, Value: strconv.FormatInt(DefAutoIncrementIncrement, 10), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint16, AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
// AutoIncrementIncrement is valid in [1, 65535].
|
|
s.AutoIncrementIncrement = tidbOptPositiveInt32(val, DefAutoIncrementIncrement)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: AutoIncrementOffset, Value: strconv.FormatInt(DefAutoIncrementOffset, 10), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint16, AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
// AutoIncrementOffset is valid in [1, 65535].
|
|
s.AutoIncrementOffset = tidbOptPositiveInt32(val, DefAutoIncrementOffset)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CharacterSetClient, Value: mysql.DefaultCharset, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCharacterSet(normalizedValue, CharacterSetClient)
|
|
}},
|
|
{Scope: ScopeNone, Name: Port, Value: "4000", Type: TypeUnsigned, MinValue: 0, MaxValue: math.MaxUint16},
|
|
{Scope: ScopeNone, Name: LowerCaseTableNames, Value: "2"},
|
|
{Scope: ScopeNone, Name: LogBin, Value: Off, Type: TypeBool},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CharacterSetResults, Value: mysql.DefaultCharset, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if normalizedValue == "" {
|
|
return normalizedValue, nil
|
|
}
|
|
return checkCharacterSet(normalizedValue, "")
|
|
}},
|
|
{Scope: ScopeNone, Name: VersionComment, Value: "TiDB Server (Apache License 2.0) " + versioninfo.TiDBEdition + " Edition, MySQL 5.7 compatible"},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TxnIsolation, Value: "REPEATABLE-READ", Type: TypeEnum, Aliases: []string{TransactionIsolation}, PossibleValues: []string{"READ-UNCOMMITTED", "READ-COMMITTED", "REPEATABLE-READ", "SERIALIZABLE"}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
// MySQL appends a warning here for tx_isolation is deprecated
|
|
// TiDB doesn't currently, but may in future. It is still commonly used by applications
|
|
// So it might be noisy to do so.
|
|
return checkIsolationLevel(vars, normalizedValue, originalValue, scope)
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TransactionIsolation, Value: "REPEATABLE-READ", Type: TypeEnum, Aliases: []string{TxnIsolation}, PossibleValues: []string{"READ-UNCOMMITTED", "READ-COMMITTED", "REPEATABLE-READ", "SERIALIZABLE"}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkIsolationLevel(vars, normalizedValue, originalValue, scope)
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CollationConnection, Value: mysql.DefaultCollationName, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCollation(vars, normalizedValue, originalValue, scope)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
if coll, err := collate.GetCollationByName(val); err == nil {
|
|
s.systems[CharacterSetConnection] = coll.CharsetName
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeNone, Name: Version, Value: mysql.ServerVersion},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: AutoCommit, Value: On, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
isAutocommit := TiDBOptOn(val)
|
|
s.SetStatusFlag(mysql.ServerStatusAutocommit, isAutocommit)
|
|
if isAutocommit {
|
|
s.SetInTxn(false)
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CharsetDatabase, Value: mysql.DefaultCharset, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCharacterSet(normalizedValue, CharsetDatabase)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
if _, coll, err := charset.GetCharsetInfo(val); err == nil {
|
|
s.systems[CollationDatabase] = coll
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: MaxPreparedStmtCount, Value: strconv.FormatInt(DefMaxPreparedStmtCount, 10), Type: TypeInt, MinValue: -1, MaxValue: 1048576, AutoConvertOutOfRange: true},
|
|
{Scope: ScopeNone, Name: DataDir, Value: "/usr/local/mysql/data/"},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: WaitTimeout, Value: strconv.FormatInt(DefWaitTimeout, 10), Type: TypeUnsigned, MinValue: 0, MaxValue: secondsPerYear, AutoConvertOutOfRange: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: InteractiveTimeout, Value: "28800", Type: TypeUnsigned, MinValue: 1, MaxValue: secondsPerYear, AutoConvertOutOfRange: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: InnodbLockWaitTimeout, Value: strconv.FormatInt(DefInnodbLockWaitTimeout, 10), Type: TypeUnsigned, MinValue: 1, MaxValue: 1073741824, AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
lockWaitSec := tidbOptInt64(val, DefInnodbLockWaitTimeout)
|
|
s.LockWaitTimeout = lockWaitSec * 1000
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: GroupConcatMaxLen, Value: "1024", AutoConvertOutOfRange: true, IsHintUpdatable: true, Type: TypeUnsigned, MinValue: 4, MaxValue: math.MaxUint64, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
// https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_group_concat_max_len
|
|
// Minimum Value 4
|
|
// Maximum Value (64-bit platforms) 18446744073709551615
|
|
// Maximum Value (32-bit platforms) 4294967295
|
|
if mathutil.IntBits == 32 {
|
|
if val, err := strconv.ParseUint(normalizedValue, 10, 64); err == nil {
|
|
if val > uint64(math.MaxUint32) {
|
|
vars.StmtCtx.AppendWarning(ErrTruncatedWrongValue.GenWithStackByArgs(GroupConcatMaxLen, originalValue))
|
|
return fmt.Sprintf("%d", math.MaxUint32), nil
|
|
}
|
|
}
|
|
}
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeNone, Name: Socket, Value: "/tmp/myssock"},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CharacterSetConnection, Value: mysql.DefaultCharset, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCharacterSet(normalizedValue, CharacterSetConnection)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
if _, coll, err := charset.GetCharsetInfo(val); err == nil {
|
|
s.systems[CollationConnection] = coll
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CharacterSetServer, Value: mysql.DefaultCharset, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkCharacterSet(normalizedValue, CharacterSetServer)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
if _, coll, err := charset.GetCharsetInfo(val); err == nil {
|
|
s.systems[CollationServer] = coll
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: MaxAllowedPacket, Value: "67108864", Type: TypeUnsigned, MinValue: 1024, MaxValue: MaxOfMaxAllowedPacket, AutoConvertOutOfRange: true},
|
|
{Scope: ScopeSession, Name: WarningCount, Value: "0", ReadOnly: true},
|
|
{Scope: ScopeSession, Name: ErrorCount, Value: "0", ReadOnly: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: WindowingUseHighPrecision, Value: On, Type: TypeBool, IsHintUpdatable: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.WindowingUseHighPrecision = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeNone, Name: "license", Value: "Apache License 2.0"},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: BlockEncryptionMode, Value: "aes-128-ecb"},
|
|
{Scope: ScopeSession, Name: "last_insert_id", Value: ""},
|
|
{Scope: ScopeNone, Name: "have_ssl", Value: "DISABLED"},
|
|
{Scope: ScopeNone, Name: "have_openssl", Value: "DISABLED"},
|
|
{Scope: ScopeNone, Name: "ssl_ca", Value: ""},
|
|
{Scope: ScopeNone, Name: "ssl_cert", Value: ""},
|
|
{Scope: ScopeNone, Name: "ssl_key", Value: ""},
|
|
{Scope: ScopeGlobal, Name: InitConnect, Value: ""},
|
|
|
|
/* TiDB specific variables */
|
|
{Scope: ScopeSession, Name: TiDBTxnScope, Value: func() string {
|
|
if isGlobal, _ := config.GetTxnScopeFromConfig(); isGlobal {
|
|
return oracle.GlobalTxnScope
|
|
}
|
|
return oracle.LocalTxnScope
|
|
}(), SetSession: func(s *SessionVars, val string) error {
|
|
switch val {
|
|
case oracle.GlobalTxnScope:
|
|
s.TxnScope = oracle.NewGlobalTxnScope()
|
|
case oracle.LocalTxnScope:
|
|
s.TxnScope = oracle.GetTxnScope()
|
|
default:
|
|
return ErrWrongValueForVar.GenWithStack("@@txn_scope value should be global or local")
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBAllowMPPExecution, Value: On, Type: TypeEnum, PossibleValues: []string{"OFF", "ON", "ENFORCE"}, SetSession: func(s *SessionVars, val string) error {
|
|
s.allowMPPExecution = val
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBBCJThresholdCount, Value: strconv.Itoa(DefBroadcastJoinThresholdCount), Type: TypeInt, MinValue: 0, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.BroadcastJoinThresholdCount = tidbOptInt64(val, DefBroadcastJoinThresholdCount)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBBCJThresholdSize, Value: strconv.Itoa(DefBroadcastJoinThresholdSize), Type: TypeInt, MinValue: 0, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.BroadcastJoinThresholdSize = tidbOptInt64(val, DefBroadcastJoinThresholdSize)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBSnapshot, Value: "", SetSession: func(s *SessionVars, val string) error {
|
|
err := setSnapshotTS(s, val)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBOptAggPushDown, Value: BoolToOnOff(DefOptAggPushDown), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowAggPushDown = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptBCJ, Value: BoolToOnOff(DefOptBCJ), Type: TypeBool, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if TiDBOptOn(normalizedValue) && vars.AllowBatchCop == 0 {
|
|
return normalizedValue, ErrWrongValueForVar.GenWithStackByArgs("Can't set Broadcast Join to 1 but tidb_allow_batch_cop is 0, please active batch cop at first.")
|
|
}
|
|
return normalizedValue, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowBCJ = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBOptDistinctAggPushDown, Value: BoolToOnOff(config.GetGlobalConfig().Performance.DistinctAggPushDown), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowDistinctAggPushDown = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBOptWriteRowID, Value: BoolToOnOff(DefOptWriteRowID), SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowWriteRowID = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBBuildStatsConcurrency, Value: strconv.Itoa(DefBuildStatsConcurrency)},
|
|
{Scope: ScopeGlobal, Name: TiDBAutoAnalyzeRatio, Value: strconv.FormatFloat(DefAutoAnalyzeRatio, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64},
|
|
{Scope: ScopeGlobal, Name: TiDBAutoAnalyzeStartTime, Value: DefAutoAnalyzeStartTime, Type: TypeTime},
|
|
{Scope: ScopeGlobal, Name: TiDBAutoAnalyzeEndTime, Value: DefAutoAnalyzeEndTime, Type: TypeTime},
|
|
{Scope: ScopeSession, Name: TiDBChecksumTableConcurrency, Value: strconv.Itoa(DefChecksumTableConcurrency)},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBExecutorConcurrency, Value: strconv.Itoa(DefExecutorConcurrency), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.ExecutorConcurrency = tidbOptPositiveInt32(val, DefExecutorConcurrency)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBDistSQLScanConcurrency, Value: strconv.Itoa(DefDistSQLScanConcurrency), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.distSQLScanConcurrency = tidbOptPositiveInt32(val, DefDistSQLScanConcurrency)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptInSubqToJoinAndAgg, Value: BoolToOnOff(DefOptInSubqToJoinAndAgg), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.SetAllowInSubqToJoinAndAgg(TiDBOptOn(val))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBOptPreferRangeScan, Value: BoolToOnOff(DefOptPreferRangeScan), Type: TypeBool, IsHintUpdatable: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.SetAllowPreferRangeScan(TiDBOptOn(val))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptCorrelationThreshold, Value: strconv.FormatFloat(DefOptCorrelationThreshold, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: 1, SetSession: func(s *SessionVars, val string) error {
|
|
s.CorrelationThreshold = tidbOptFloat64(val, DefOptCorrelationThreshold)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptCorrelationExpFactor, Value: strconv.Itoa(DefOptCorrelationExpFactor), Type: TypeUnsigned, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.CorrelationExpFactor = int(tidbOptInt64(val, DefOptCorrelationExpFactor))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptCPUFactor, Value: strconv.FormatFloat(DefOptCPUFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.CPUFactor = tidbOptFloat64(val, DefOptCPUFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptTiFlashConcurrencyFactor, Value: strconv.FormatFloat(DefOptTiFlashConcurrencyFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.CopTiFlashConcurrencyFactor = tidbOptFloat64(val, DefOptTiFlashConcurrencyFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptCopCPUFactor, Value: strconv.FormatFloat(DefOptCopCPUFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.CopCPUFactor = tidbOptFloat64(val, DefOptCopCPUFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptNetworkFactor, Value: strconv.FormatFloat(DefOptNetworkFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.NetworkFactor = tidbOptFloat64(val, DefOptNetworkFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptScanFactor, Value: strconv.FormatFloat(DefOptScanFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.ScanFactor = tidbOptFloat64(val, DefOptScanFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptDescScanFactor, Value: strconv.FormatFloat(DefOptDescScanFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.DescScanFactor = tidbOptFloat64(val, DefOptDescScanFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptSeekFactor, Value: strconv.FormatFloat(DefOptSeekFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.SeekFactor = tidbOptFloat64(val, DefOptSeekFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptMemoryFactor, Value: strconv.FormatFloat(DefOptMemoryFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemoryFactor = tidbOptFloat64(val, DefOptMemoryFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptDiskFactor, Value: strconv.FormatFloat(DefOptDiskFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.DiskFactor = tidbOptFloat64(val, DefOptDiskFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptConcurrencyFactor, Value: strconv.FormatFloat(DefOptConcurrencyFactor, 'f', -1, 64), Type: TypeFloat, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.ConcurrencyFactor = tidbOptFloat64(val, DefOptConcurrencyFactor)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBIndexJoinBatchSize, Value: strconv.Itoa(DefIndexJoinBatchSize), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.IndexJoinBatchSize = tidbOptPositiveInt32(val, DefIndexJoinBatchSize)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBIndexLookupSize, Value: strconv.Itoa(DefIndexLookupSize), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.IndexLookupSize = tidbOptPositiveInt32(val, DefIndexLookupSize)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBIndexLookupConcurrency, Value: strconv.Itoa(DefIndexLookupConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.indexLookupConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBIndexLookupConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBIndexLookupJoinConcurrency, Value: strconv.Itoa(DefIndexLookupJoinConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.indexLookupJoinConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBIndexLookupJoinConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBIndexSerialScanConcurrency, Value: strconv.Itoa(DefIndexSerialScanConcurrency), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.indexSerialScanConcurrency = tidbOptPositiveInt32(val, DefIndexSerialScanConcurrency)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBSkipUTF8Check, Value: BoolToOnOff(DefSkipUTF8Check), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.SkipUTF8Check = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBSkipASCIICheck, Value: BoolToOnOff(DefSkipASCIICheck), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.SkipASCIICheck = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBBatchInsert, Value: BoolToOnOff(DefBatchInsert), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.BatchInsert = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBBatchDelete, Value: BoolToOnOff(DefBatchDelete), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.BatchDelete = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBBatchCommit, Value: BoolToOnOff(DefBatchCommit), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.BatchCommit = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBDMLBatchSize, Value: strconv.Itoa(DefDMLBatchSize), Type: TypeUnsigned, MinValue: 0, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.DMLBatchSize = int(tidbOptInt64(val, DefOptCorrelationExpFactor))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBCurrentTS, Value: strconv.Itoa(DefCurretTS), ReadOnly: true},
|
|
{Scope: ScopeSession, Name: TiDBLastTxnInfo, Value: strconv.Itoa(DefCurretTS), ReadOnly: true},
|
|
{Scope: ScopeSession, Name: TiDBLastQueryInfo, Value: strconv.Itoa(DefCurretTS), ReadOnly: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBMaxChunkSize, Value: strconv.Itoa(DefMaxChunkSize), Type: TypeUnsigned, MinValue: maxChunkSizeLowerBound, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MaxChunkSize = tidbOptPositiveInt32(val, DefMaxChunkSize)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBAllowBatchCop, Value: strconv.Itoa(DefTiDBAllowBatchCop), Type: TypeInt, MinValue: 0, MaxValue: 2, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if normalizedValue == "0" && vars.AllowBCJ {
|
|
return normalizedValue, ErrWrongValueForVar.GenWithStackByArgs("Can't set batch cop 0 but tidb_opt_broadcast_join is 1, please set tidb_opt_broadcast_join 0 at first")
|
|
}
|
|
return normalizedValue, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowBatchCop = int(tidbOptInt64(val, DefTiDBAllowBatchCop))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBInitChunkSize, Value: strconv.Itoa(DefInitChunkSize), Type: TypeUnsigned, MinValue: 1, MaxValue: initChunkSizeUpperBound, SetSession: func(s *SessionVars, val string) error {
|
|
s.InitChunkSize = tidbOptPositiveInt32(val, DefInitChunkSize)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableCascadesPlanner, Value: Off, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.SetEnableCascadesPlanner(TiDBOptOn(val))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableIndexMerge, Value: Off, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.SetEnableIndexMerge(TiDBOptOn(val))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaQuery, Value: strconv.FormatInt(config.GetGlobalConfig().MemQuotaQuery, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaQuery = tidbOptInt64(val, config.GetGlobalConfig().MemQuotaQuery)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaHashJoin, Value: strconv.FormatInt(DefTiDBMemQuotaHashJoin, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaHashJoin = tidbOptInt64(val, DefTiDBMemQuotaHashJoin)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TIDBMemQuotaHashJoin, TIDBMemQuotaQuery)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaMergeJoin, Value: strconv.FormatInt(DefTiDBMemQuotaMergeJoin, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaMergeJoin = tidbOptInt64(val, DefTiDBMemQuotaMergeJoin)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TIDBMemQuotaMergeJoin, TIDBMemQuotaQuery)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaSort, Value: strconv.FormatInt(DefTiDBMemQuotaSort, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaSort = tidbOptInt64(val, DefTiDBMemQuotaSort)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TIDBMemQuotaSort, TIDBMemQuotaQuery)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaTopn, Value: strconv.FormatInt(DefTiDBMemQuotaTopn, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaTopn = tidbOptInt64(val, DefTiDBMemQuotaTopn)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TIDBMemQuotaTopn, TIDBMemQuotaQuery)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaIndexLookupReader, Value: strconv.FormatInt(DefTiDBMemQuotaIndexLookupReader, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaIndexLookupReader = tidbOptInt64(val, DefTiDBMemQuotaIndexLookupReader)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TIDBMemQuotaIndexLookupReader, TIDBMemQuotaQuery)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TIDBMemQuotaIndexLookupJoin, Value: strconv.FormatInt(DefTiDBMemQuotaIndexLookupJoin, 10), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaIndexLookupJoin = tidbOptInt64(val, DefTiDBMemQuotaIndexLookupJoin)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TIDBMemQuotaIndexLookupJoin, TIDBMemQuotaQuery)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBEnableStreaming, Value: Off, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableStreaming = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBEnableChunkRPC, Value: On, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableChunkRPC = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TxnIsolationOneShot, Value: "", Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
return checkIsolationLevel(vars, normalizedValue, originalValue, scope)
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.txnIsolationLevelOneShot.state = oneShotSet
|
|
s.txnIsolationLevelOneShot.value = val
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableTablePartition, Value: On, Type: TypeEnum, PossibleValues: []string{Off, On, "AUTO"}, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableTablePartition = val
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBEnableListTablePartition, Value: Off, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableListTablePartition = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBHashJoinConcurrency, Value: strconv.Itoa(DefTiDBHashJoinConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.hashJoinConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBHashJoinConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBProjectionConcurrency, Value: strconv.Itoa(DefTiDBProjectionConcurrency), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.projectionConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBProjectionConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBHashAggPartialConcurrency, Value: strconv.Itoa(DefTiDBHashAggPartialConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.hashAggPartialConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBHashAggPartialConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBHashAggFinalConcurrency, Value: strconv.Itoa(DefTiDBHashAggFinalConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.hashAggFinalConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBHashAggFinalConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBWindowConcurrency, Value: strconv.Itoa(DefTiDBWindowConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.windowConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBWindowConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBMergeJoinConcurrency, Value: strconv.Itoa(DefTiDBMergeJoinConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.mergeJoinConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBMergeJoinConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStreamAggConcurrency, Value: strconv.Itoa(DefTiDBStreamAggConcurrency), Type: TypeInt, MinValue: 1, MaxValue: math.MaxInt64, AllowAutoValue: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.streamAggConcurrency = tidbOptPositiveInt32(val, ConcurrencyUnset)
|
|
return nil
|
|
}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBStreamAggConcurrency, TiDBExecutorConcurrency)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableParallelApply, Value: BoolToOnOff(DefTiDBEnableParallelApply), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableParallelApply = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBMemQuotaApplyCache, Value: strconv.Itoa(DefTiDBMemQuotaApplyCache), SetSession: func(s *SessionVars, val string) error {
|
|
s.MemQuotaApplyCache = tidbOptInt64(val, DefTiDBMemQuotaApplyCache)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBBackoffLockFast, Value: strconv.Itoa(tikvstore.DefBackoffLockFast), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.KVVars.BackoffLockFast = tidbOptPositiveInt32(val, tikvstore.DefBackoffLockFast)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBBackOffWeight, Value: strconv.Itoa(tikvstore.DefBackOffWeight), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.KVVars.BackOffWeight = tidbOptPositiveInt32(val, tikvstore.DefBackOffWeight)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBRetryLimit, Value: strconv.Itoa(DefTiDBRetryLimit), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.RetryLimit = tidbOptInt64(val, DefTiDBRetryLimit)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBDisableTxnAutoRetry, Value: BoolToOnOff(DefTiDBDisableTxnAutoRetry), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.DisableTxnAutoRetry = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBConstraintCheckInPlace, Value: BoolToOnOff(DefTiDBConstraintCheckInPlace), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.ConstraintCheckInPlace = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBTxnMode, Value: DefTiDBTxnMode, AllowEmptyAll: true, Type: TypeEnum, PossibleValues: []string{"pessimistic", "optimistic"}, SetSession: func(s *SessionVars, val string) error {
|
|
s.TxnMode = strings.ToUpper(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBRowFormatVersion, Value: strconv.Itoa(DefTiDBRowFormatV1), Type: TypeUnsigned, MinValue: 1, MaxValue: 2, SetSession: func(s *SessionVars, val string) error {
|
|
formatVersion := int(tidbOptInt64(val, DefTiDBRowFormatV1))
|
|
if formatVersion == DefTiDBRowFormatV1 {
|
|
s.RowEncoder.Enable = false
|
|
} else if formatVersion == DefTiDBRowFormatV2 {
|
|
s.RowEncoder.Enable = true
|
|
}
|
|
SetDDLReorgRowFormat(tidbOptInt64(val, DefTiDBRowFormatV2))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBOptimizerSelectivityLevel, Value: strconv.Itoa(DefTiDBOptimizerSelectivityLevel), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxUint64, SetSession: func(s *SessionVars, val string) error {
|
|
s.OptimizerSelectivityLevel = tidbOptPositiveInt32(val, DefTiDBOptimizerSelectivityLevel)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableWindowFunction, Value: BoolToOnOff(DefEnableWindowFunction), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableWindowFunction = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableStrictDoubleTypeCheck, Value: BoolToOnOff(DefEnableStrictDoubleTypeCheck), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableStrictDoubleTypeCheck = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableVectorizedExpression, Value: BoolToOnOff(DefEnableVectorizedExpression), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableVectorizedExpression = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableFastAnalyze, Value: BoolToOnOff(DefTiDBUseFastAnalyze), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableFastAnalyze = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBSkipIsolationLevelCheck, Value: BoolToOnOff(DefTiDBSkipIsolationLevelCheck), Type: TypeBool},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableRateLimitAction, Value: BoolToOnOff(DefTiDBEnableRateLimitAction), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnabledRateLimitAction = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBAllowFallbackToTiKV, Value: "", Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if normalizedValue == "" {
|
|
return "", nil
|
|
}
|
|
engines := strings.Split(normalizedValue, ",")
|
|
var formatVal string
|
|
storeTypes := make(map[kv.StoreType]struct{})
|
|
for i, engine := range engines {
|
|
engine = strings.TrimSpace(engine)
|
|
switch {
|
|
case strings.EqualFold(engine, kv.TiFlash.Name()):
|
|
if _, ok := storeTypes[kv.TiFlash]; !ok {
|
|
if i != 0 {
|
|
formatVal += ","
|
|
}
|
|
formatVal += kv.TiFlash.Name()
|
|
storeTypes[kv.TiFlash] = struct{}{}
|
|
}
|
|
default:
|
|
return normalizedValue, ErrWrongValueForVar.GenWithStackByArgs(TiDBAllowFallbackToTiKV, normalizedValue)
|
|
}
|
|
}
|
|
return formatVal, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowFallbackToTiKV = make(map[kv.StoreType]struct{})
|
|
for _, engine := range strings.Split(val, ",") {
|
|
switch engine {
|
|
case kv.TiFlash.Name():
|
|
s.AllowFallbackToTiKV[kv.TiFlash] = struct{}{}
|
|
}
|
|
}
|
|
return nil
|
|
}},
|
|
/* The following variable is defined as session scope but is actually server scope. */
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableDynamicPrivileges, Value: Off, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableDynamicPrivileges = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBGeneralLog, Value: BoolToOnOff(DefTiDBGeneralLog), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
ProcessGeneralLog.Store(TiDBOptOn(val))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBPProfSQLCPU, Value: strconv.Itoa(DefTiDBPProfSQLCPU), Type: TypeInt, MinValue: 0, MaxValue: 1, SetSession: func(s *SessionVars, val string) error {
|
|
EnablePProfSQLCPU.Store(uint32(tidbOptPositiveInt32(val, DefTiDBPProfSQLCPU)) > 0)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBDDLSlowOprThreshold, Value: strconv.Itoa(DefTiDBDDLSlowOprThreshold), SetSession: func(s *SessionVars, val string) error {
|
|
atomic.StoreUint32(&DDLSlowOprThreshold, uint32(tidbOptPositiveInt32(val, DefTiDBDDLSlowOprThreshold)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBConfig, Value: "", ReadOnly: true},
|
|
{Scope: ScopeGlobal, Name: TiDBDDLReorgWorkerCount, Value: strconv.Itoa(DefTiDBDDLReorgWorkerCount), Type: TypeUnsigned, MinValue: 1, MaxValue: uint64(maxDDLReorgWorkerCount), SetSession: func(s *SessionVars, val string) error {
|
|
SetDDLReorgWorkerCounter(int32(tidbOptPositiveInt32(val, DefTiDBDDLReorgWorkerCount)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBDDLReorgBatchSize, Value: strconv.Itoa(DefTiDBDDLReorgBatchSize), Type: TypeUnsigned, MinValue: int64(MinDDLReorgBatchSize), MaxValue: uint64(MaxDDLReorgBatchSize), AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
SetDDLReorgBatchSize(int32(tidbOptPositiveInt32(val, DefTiDBDDLReorgBatchSize)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBDDLErrorCountLimit, Value: strconv.Itoa(DefTiDBDDLErrorCountLimit), Type: TypeUnsigned, MinValue: 0, MaxValue: uint64(math.MaxInt64), AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
SetDDLErrorCountLimit(tidbOptInt64(val, DefTiDBDDLErrorCountLimit))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBDDLReorgPriority, Value: "PRIORITY_LOW", SetSession: func(s *SessionVars, val string) error {
|
|
s.setDDLReorgPriority(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBMaxDeltaSchemaCount, Value: strconv.Itoa(DefTiDBMaxDeltaSchemaCount), Type: TypeUnsigned, MinValue: 100, MaxValue: 16384, AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
// It's a global variable, but it also wants to be cached in server.
|
|
SetMaxDeltaSchemaCount(tidbOptInt64(val, DefTiDBMaxDeltaSchemaCount))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableChangeColumnType, Value: BoolToOnOff(DefTiDBChangeColumnType), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableChangeColumnType = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBEnableChangeMultiSchema, Value: BoolToOnOff(DefTiDBChangeMultiSchema), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableChangeMultiSchema = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBEnablePointGetCache, Value: BoolToOnOff(DefTiDBPointGetCache), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnablePointGetCache = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBEnableAlterPlacement, Value: BoolToOnOff(DefTiDBEnableAlterPlacement), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableAlterPlacement = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBForcePriority, Value: mysql.Priority2Str[DefTiDBForcePriority], SetSession: func(s *SessionVars, val string) error {
|
|
atomic.StoreInt32(&ForcePriority, int32(mysql.Str2Priority(val)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBEnableRadixJoin, Value: BoolToOnOff(DefTiDBUseRadixJoin), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableRadixJoin = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBOptJoinReorderThreshold, Value: strconv.Itoa(DefTiDBOptJoinReorderThreshold), Type: TypeUnsigned, MinValue: 0, MaxValue: 63, SetSession: func(s *SessionVars, val string) error {
|
|
s.TiDBOptJoinReorderThreshold = tidbOptPositiveInt32(val, DefTiDBOptJoinReorderThreshold)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBSlowQueryFile, Value: "", SetSession: func(s *SessionVars, val string) error {
|
|
s.SlowQueryFile = val
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBScatterRegion, Value: BoolToOnOff(DefTiDBScatterRegion), Type: TypeBool},
|
|
{Scope: ScopeSession, Name: TiDBWaitSplitRegionFinish, Value: BoolToOnOff(DefTiDBWaitSplitRegionFinish), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.WaitSplitRegionFinish = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBWaitSplitRegionTimeout, Value: strconv.Itoa(DefWaitSplitRegionTimeout), Type: TypeUnsigned, MinValue: 1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
s.WaitSplitRegionTimeout = uint64(tidbOptPositiveInt32(val, DefWaitSplitRegionTimeout))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBLowResolutionTSO, Value: Off, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.LowResolutionTSO = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBExpensiveQueryTimeThreshold, Value: strconv.Itoa(DefTiDBExpensiveQueryTimeThreshold), Type: TypeUnsigned, MinValue: int64(MinExpensiveQueryTimeThreshold), MaxValue: uint64(math.MaxInt64), AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
atomic.StoreUint64(&ExpensiveQueryTimeThreshold, uint64(tidbOptPositiveInt32(val, DefTiDBExpensiveQueryTimeThreshold)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBMemoryUsageAlarmRatio, Value: strconv.FormatFloat(config.GetGlobalConfig().Performance.MemoryUsageAlarmRatio, 'f', -1, 64), Type: TypeFloat, MinValue: 0.0, MaxValue: 1.0, SetSession: func(s *SessionVars, val string) error {
|
|
MemoryUsageAlarmRatio.Store(tidbOptFloat64(val, 0.8))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableNoopFuncs, Value: BoolToOnOff(DefTiDBEnableNoopFuncs), Type: TypeBool, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
|
|
// The behavior is very weird if someone can turn TiDBEnableNoopFuncs OFF, but keep any of the following on:
|
|
// TxReadOnly, TransactionReadOnly, OfflineMode, SuperReadOnly, serverReadOnly
|
|
// To prevent this strange position, prevent setting to OFF when any of these sysVars are ON of the same scope.
|
|
|
|
if normalizedValue == Off {
|
|
for _, potentialIncompatibleSysVar := range []string{TxReadOnly, TransactionReadOnly, OfflineMode, SuperReadOnly, ReadOnly} {
|
|
val, _ := vars.GetSystemVar(potentialIncompatibleSysVar) // session scope
|
|
if scope == ScopeGlobal { // global scope
|
|
var err error
|
|
val, err = vars.GlobalVarsAccessor.GetGlobalSysVar(potentialIncompatibleSysVar)
|
|
if err != nil {
|
|
return originalValue, errUnknownSystemVariable.GenWithStackByArgs(potentialIncompatibleSysVar)
|
|
}
|
|
}
|
|
if TiDBOptOn(val) {
|
|
return originalValue, errValueNotSupportedWhen.GenWithStackByArgs(TiDBEnableNoopFuncs, potentialIncompatibleSysVar)
|
|
}
|
|
}
|
|
}
|
|
return normalizedValue, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableNoopFuncs = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBReplicaRead, Value: "leader", Type: TypeEnum, PossibleValues: []string{"leader", "follower", "leader-and-follower"}, SetSession: func(s *SessionVars, val string) error {
|
|
if strings.EqualFold(val, "follower") {
|
|
s.SetReplicaRead(tikvstore.ReplicaReadFollower)
|
|
} else if strings.EqualFold(val, "leader-and-follower") {
|
|
s.SetReplicaRead(tikvstore.ReplicaReadMixed)
|
|
} else if strings.EqualFold(val, "leader") || len(val) == 0 {
|
|
s.SetReplicaRead(tikvstore.ReplicaReadLeader)
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBAllowRemoveAutoInc, Value: BoolToOnOff(DefTiDBAllowRemoveAutoInc), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowRemoveAutoInc = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableStmtSummary, Value: BoolToOnOff(config.GetGlobalConfig().StmtSummary.Enable), Type: TypeBool, AllowEmpty: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStmtSummaryInternalQuery, Value: BoolToOnOff(config.GetGlobalConfig().StmtSummary.EnableInternalQuery), Type: TypeBool, AllowEmpty: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStmtSummaryRefreshInterval, Value: strconv.Itoa(config.GetGlobalConfig().StmtSummary.RefreshInterval), Type: TypeInt, MinValue: 1, MaxValue: uint64(math.MaxInt32), AllowEmpty: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStmtSummaryHistorySize, Value: strconv.Itoa(config.GetGlobalConfig().StmtSummary.HistorySize), Type: TypeInt, MinValue: 0, MaxValue: uint64(math.MaxUint8), AllowEmpty: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStmtSummaryMaxStmtCount, Value: strconv.FormatUint(uint64(config.GetGlobalConfig().StmtSummary.MaxStmtCount), 10), Type: TypeInt, MinValue: 1, MaxValue: uint64(math.MaxInt16), AllowEmpty: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStmtSummaryMaxSQLLength, Value: strconv.FormatUint(uint64(config.GetGlobalConfig().StmtSummary.MaxSQLLength), 10), Type: TypeInt, MinValue: 0, MaxValue: uint64(math.MaxInt32), AllowEmpty: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBCapturePlanBaseline, Value: Off, Type: TypeBool, AllowEmptyAll: true},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBUsePlanBaselines, Value: BoolToOnOff(DefTiDBUsePlanBaselines), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.UsePlanBaselines = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEvolvePlanBaselines, Value: BoolToOnOff(DefTiDBEvolvePlanBaselines), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EvolvePlanBaselines = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableExtendedStats, Value: BoolToOnOff(false), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableExtendedStats = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBEvolvePlanTaskMaxTime, Value: strconv.Itoa(DefTiDBEvolvePlanTaskMaxTime), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64},
|
|
{Scope: ScopeGlobal, Name: TiDBEvolvePlanTaskStartTime, Value: DefTiDBEvolvePlanTaskStartTime, Type: TypeTime},
|
|
{Scope: ScopeGlobal, Name: TiDBEvolvePlanTaskEndTime, Value: DefTiDBEvolvePlanTaskEndTime, Type: TypeTime},
|
|
{Scope: ScopeSession, Name: TiDBIsolationReadEngines, Value: strings.Join(config.GetGlobalConfig().IsolationRead.Engines, ", "), Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
engines := strings.Split(normalizedValue, ",")
|
|
var formatVal string
|
|
for i, engine := range engines {
|
|
engine = strings.TrimSpace(engine)
|
|
if i != 0 {
|
|
formatVal += ","
|
|
}
|
|
switch {
|
|
case strings.EqualFold(engine, kv.TiKV.Name()):
|
|
formatVal += kv.TiKV.Name()
|
|
case strings.EqualFold(engine, kv.TiFlash.Name()):
|
|
formatVal += kv.TiFlash.Name()
|
|
case strings.EqualFold(engine, kv.TiDB.Name()):
|
|
formatVal += kv.TiDB.Name()
|
|
default:
|
|
return normalizedValue, ErrWrongValueForVar.GenWithStackByArgs(TiDBIsolationReadEngines, normalizedValue)
|
|
}
|
|
}
|
|
return formatVal, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.IsolationReadEngines = make(map[kv.StoreType]struct{})
|
|
for _, engine := range strings.Split(val, ",") {
|
|
switch engine {
|
|
case kv.TiKV.Name():
|
|
s.IsolationReadEngines[kv.TiKV] = struct{}{}
|
|
case kv.TiFlash.Name():
|
|
s.IsolationReadEngines[kv.TiFlash] = struct{}{}
|
|
case kv.TiDB.Name():
|
|
s.IsolationReadEngines[kv.TiDB] = struct{}{}
|
|
}
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBStoreLimit, Value: strconv.FormatInt(atomic.LoadInt64(&config.GetGlobalConfig().TiKVClient.StoreLimit), 10), Type: TypeInt, MinValue: 0, MaxValue: uint64(math.MaxInt64), AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
tikvstore.StoreLimit.Store(tidbOptInt64(val, DefTiDBStoreLimit))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBMetricSchemaStep, Value: strconv.Itoa(DefTiDBMetricSchemaStep), Type: TypeUnsigned, MinValue: 10, MaxValue: 60 * 60 * 60, SetSession: func(s *SessionVars, val string) error {
|
|
s.MetricSchemaStep = tidbOptInt64(val, DefTiDBMetricSchemaStep)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBMetricSchemaRangeDuration, Value: strconv.Itoa(DefTiDBMetricSchemaRangeDuration), Type: TypeUnsigned, MinValue: 10, MaxValue: 60 * 60 * 60, SetSession: func(s *SessionVars, val string) error {
|
|
s.MetricSchemaRangeDuration = tidbOptInt64(val, DefTiDBMetricSchemaRangeDuration)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBSlowLogThreshold, Value: strconv.Itoa(logutil.DefaultSlowThreshold), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
atomic.StoreUint64(&config.GetGlobalConfig().Log.SlowThreshold, uint64(tidbOptInt64(val, logutil.DefaultSlowThreshold)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBRecordPlanInSlowLog, Value: int32ToBoolStr(logutil.DefaultRecordPlanInSlowLog), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
atomic.StoreUint32(&config.GetGlobalConfig().Log.RecordPlanInSlowLog, uint32(tidbOptInt64(val, logutil.DefaultRecordPlanInSlowLog)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBEnableSlowLog, Value: BoolToOnOff(logutil.DefaultTiDBEnableSlowLog), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
config.GetGlobalConfig().Log.EnableSlowLog = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBQueryLogMaxLen, Value: strconv.Itoa(logutil.DefaultQueryLogMaxLen), Type: TypeInt, MinValue: -1, MaxValue: math.MaxInt64, SetSession: func(s *SessionVars, val string) error {
|
|
atomic.StoreUint64(&config.GetGlobalConfig().Log.QueryLogMaxLen, uint64(tidbOptInt64(val, logutil.DefaultQueryLogMaxLen)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: CTEMaxRecursionDepth, Value: strconv.Itoa(DefCTEMaxRecursionDepth), Type: TypeInt, MinValue: 0, MaxValue: 4294967295, AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.CTEMaxRecursionDepth = tidbOptInt(val, DefCTEMaxRecursionDepth)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBCheckMb4ValueInUTF8, Value: BoolToOnOff(config.GetGlobalConfig().CheckMb4ValueInUTF8), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
config.GetGlobalConfig().CheckMb4ValueInUTF8 = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBFoundInPlanCache, Value: BoolToOnOff(DefTiDBFoundInPlanCache), Type: TypeBool, ReadOnly: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.FoundInPlanCache = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBFoundInBinding, Value: BoolToOnOff(DefTiDBFoundInBinding), Type: TypeBool, ReadOnly: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.FoundInBinding = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeSession, Name: TiDBEnableCollectExecutionInfo, Value: BoolToOnOff(DefTiDBEnableCollectExecutionInfo), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
oldConfig := config.GetGlobalConfig()
|
|
newValue := TiDBOptOn(val)
|
|
if oldConfig.EnableCollectExecutionInfo != newValue {
|
|
newConfig := *oldConfig
|
|
newConfig.EnableCollectExecutionInfo = newValue
|
|
config.StoreGlobalConfig(&newConfig)
|
|
}
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBAllowAutoRandExplicitInsert, Value: BoolToOnOff(DefTiDBAllowAutoRandExplicitInsert), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.AllowAutoRandExplicitInsert = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableClusteredIndex, Value: IntOnly, Type: TypeEnum, PossibleValues: []string{Off, On, IntOnly}, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if normalizedValue == IntOnly {
|
|
vars.StmtCtx.AppendWarning(errWarnDeprecatedSyntax.FastGenByArgs(normalizedValue, fmt.Sprintf("'%s' or '%s'", On, Off)))
|
|
}
|
|
return normalizedValue, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableClusteredIndex = TiDBOptEnableClustered(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBPartitionPruneMode, Value: string(Static), Hidden: true, Type: TypeStr, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
mode := PartitionPruneMode(normalizedValue).Update()
|
|
if !mode.Valid() {
|
|
return normalizedValue, ErrWrongTypeForVar.GenWithStackByArgs(TiDBPartitionPruneMode)
|
|
}
|
|
return string(mode), nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.PartitionPruneMode.Store(strings.ToLower(strings.TrimSpace(val)))
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBSlowLogMasking, Value: BoolToOnOff(DefTiDBRedactLog), Aliases: []string{TiDBRedactLog}, Type: TypeBool, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
appendDeprecationWarning(vars, TiDBSlowLogMasking, TiDBRedactLog)
|
|
return normalizedValue, nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBRedactLog, Value: BoolToOnOff(DefTiDBRedactLog), Aliases: []string{TiDBSlowLogMasking}, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableRedactLog = TiDBOptOn(val)
|
|
errors.RedactLogEnabled.Store(s.EnableRedactLog)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBShardAllocateStep, Value: strconv.Itoa(DefTiDBShardAllocateStep), Type: TypeInt, MinValue: 1, MaxValue: uint64(math.MaxInt64), AutoConvertOutOfRange: true, SetSession: func(s *SessionVars, val string) error {
|
|
s.ShardAllocateStep = tidbOptInt64(val, DefTiDBShardAllocateStep)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal, Name: TiDBEnableTelemetry, Value: BoolToOnOff(DefTiDBEnableTelemetry), Type: TypeBool},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableAmendPessimisticTxn, Value: BoolToOnOff(DefTiDBEnableAmendPessimisticTxn), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableAmendPessimisticTxn = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableAsyncCommit, Value: BoolToOnOff(DefTiDBEnableAsyncCommit), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableAsyncCommit = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnable1PC, Value: BoolToOnOff(DefTiDBEnable1PC), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.Enable1PC = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBGuaranteeLinearizability, Value: BoolToOnOff(DefTiDBGuaranteeLinearizability), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.GuaranteeLinearizability = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBAnalyzeVersion, Value: strconv.Itoa(DefTiDBAnalyzeVersion), Hidden: true, Type: TypeInt, MinValue: 1, MaxValue: 3, Validation: func(vars *SessionVars, normalizedValue string, originalValue string, scope ScopeFlag) (string, error) {
|
|
if normalizedValue == "2" && FeedbackProbability.Load() > 0 {
|
|
var original string
|
|
var err error
|
|
if scope == ScopeGlobal {
|
|
original, err = vars.GlobalVarsAccessor.GetGlobalSysVar(TiDBAnalyzeVersion)
|
|
if err != nil {
|
|
return normalizedValue, nil
|
|
}
|
|
} else {
|
|
original = strconv.Itoa(vars.AnalyzeVersion)
|
|
}
|
|
vars.StmtCtx.AppendError(errors.New("variable tidb_analyze_version not updated because analyze version 2 is incompatible with query feedback. Please consider setting feedback-probability to 0.0 in config file to disable query feedback"))
|
|
return original, nil
|
|
}
|
|
return normalizedValue, nil
|
|
}, SetSession: func(s *SessionVars, val string) error {
|
|
s.AnalyzeVersion = tidbOptPositiveInt32(val, DefTiDBAnalyzeVersion)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableIndexMergeJoin, Value: BoolToOnOff(DefTiDBEnableIndexMergeJoin), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.EnableIndexMergeJoin = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBTrackAggregateMemoryUsage, Value: BoolToOnOff(DefTiDBTrackAggregateMemoryUsage), Hidden: true, Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.TrackAggregateMemoryUsage = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBMultiStatementMode, Value: Off, Type: TypeEnum, PossibleValues: []string{Off, On, Warn}, SetSession: func(s *SessionVars, val string) error {
|
|
s.MultiStatementMode = TiDBOptMultiStmt(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeGlobal | ScopeSession, Name: TiDBEnableExchangePartition, Value: BoolToOnOff(DefTiDBEnableExchangePartition), Type: TypeBool, SetSession: func(s *SessionVars, val string) error {
|
|
s.TiDBEnableExchangePartition = TiDBOptOn(val)
|
|
return nil
|
|
}},
|
|
{Scope: ScopeNone, Name: TiDBEnableEnhancedSecurity, Value: Off, Type: TypeBool},
|
|
|
|
/* tikv gc metrics */
|
|
{Scope: ScopeGlobal, Name: TiDBGCEnable, Value: On, Type: TypeBool},
|
|
{Scope: ScopeGlobal, Name: TiDBGCRunInterval, Value: "10m0s", Type: TypeDuration, MinValue: int64(time.Minute * 10), MaxValue: math.MaxInt64},
|
|
{Scope: ScopeGlobal, Name: TiDBGCLifetime, Value: "10m0s", Type: TypeDuration, MinValue: int64(time.Minute * 10), MaxValue: math.MaxInt64},
|
|
{Scope: ScopeGlobal, Name: TiDBGCConcurrency, Value: "-1", Type: TypeInt, MinValue: 1, MaxValue: 128, AllowAutoValue: true},
|
|
{Scope: ScopeGlobal, Name: TiDBGCScanLockMode, Value: "PHYSICAL", Type: TypeEnum, PossibleValues: []string{"PHYSICAL", "LEGACY"}},
|
|
}
|
|
|
|
// FeedbackProbability points to the FeedbackProbability in statistics package.
|
|
// It's initialized in init() in feedback.go to solve import cycle.
|
|
var FeedbackProbability *atomic2.Float64
|
|
|
|
// SetNamesVariables is the system variable names related to set names statements.
|
|
var SetNamesVariables = []string{
|
|
CharacterSetClient,
|
|
CharacterSetConnection,
|
|
CharacterSetResults,
|
|
}
|
|
|
|
// SetCharsetVariables is the system variable names related to set charset statements.
|
|
var SetCharsetVariables = []string{
|
|
CharacterSetClient,
|
|
CharacterSetResults,
|
|
}
|
|
|
|
const (
|
|
// CharacterSetConnection is the name for character_set_connection system variable.
|
|
CharacterSetConnection = "character_set_connection"
|
|
// CollationConnection is the name for collation_connection system variable.
|
|
CollationConnection = "collation_connection"
|
|
// CharsetDatabase is the name for character_set_database system variable.
|
|
CharsetDatabase = "character_set_database"
|
|
// CollationDatabase is the name for collation_database system variable.
|
|
CollationDatabase = "collation_database"
|
|
// CharacterSetFilesystem is the name for character_set_filesystem system variable.
|
|
CharacterSetFilesystem = "character_set_filesystem"
|
|
// CharacterSetClient is the name for character_set_client system variable.
|
|
CharacterSetClient = "character_set_client"
|
|
// CharacterSetSystem is the name for character_set_system system variable.
|
|
CharacterSetSystem = "character_set_system"
|
|
// GeneralLog is the name for 'general_log' system variable.
|
|
GeneralLog = "general_log"
|
|
// AvoidTemporalUpgrade is the name for 'avoid_temporal_upgrade' system variable.
|
|
AvoidTemporalUpgrade = "avoid_temporal_upgrade"
|
|
// MaxPreparedStmtCount is the name for 'max_prepared_stmt_count' system variable.
|
|
MaxPreparedStmtCount = "max_prepared_stmt_count"
|
|
// BigTables is the name for 'big_tables' system variable.
|
|
BigTables = "big_tables"
|
|
// CheckProxyUsers is the name for 'check_proxy_users' system variable.
|
|
CheckProxyUsers = "check_proxy_users"
|
|
// CoreFile is the name for 'core_file' system variable.
|
|
CoreFile = "core_file"
|
|
// DefaultWeekFormat is the name for 'default_week_format' system variable.
|
|
DefaultWeekFormat = "default_week_format"
|
|
// GroupConcatMaxLen is the name for 'group_concat_max_len' system variable.
|
|
GroupConcatMaxLen = "group_concat_max_len"
|
|
// DelayKeyWrite is the name for 'delay_key_write' system variable.
|
|
DelayKeyWrite = "delay_key_write"
|
|
// EndMarkersInJSON is the name for 'end_markers_in_json' system variable.
|
|
EndMarkersInJSON = "end_markers_in_json"
|
|
// Hostname is the name for 'hostname' system variable.
|
|
Hostname = "hostname"
|
|
// InnodbCommitConcurrency is the name for 'innodb_commit_concurrency' system variable.
|
|
InnodbCommitConcurrency = "innodb_commit_concurrency"
|
|
// InnodbFastShutdown is the name for 'innodb_fast_shutdown' system variable.
|
|
InnodbFastShutdown = "innodb_fast_shutdown"
|
|
// InnodbLockWaitTimeout is the name for 'innodb_lock_wait_timeout' system variable.
|
|
InnodbLockWaitTimeout = "innodb_lock_wait_timeout"
|
|
// SQLLogBin is the name for 'sql_log_bin' system variable.
|
|
SQLLogBin = "sql_log_bin"
|
|
// LogBin is the name for 'log_bin' system variable.
|
|
LogBin = "log_bin"
|
|
// MaxSortLength is the name for 'max_sort_length' system variable.
|
|
MaxSortLength = "max_sort_length"
|
|
// MaxSpRecursionDepth is the name for 'max_sp_recursion_depth' system variable.
|
|
MaxSpRecursionDepth = "max_sp_recursion_depth"
|
|
// MaxUserConnections is the name for 'max_user_connections' system variable.
|
|
MaxUserConnections = "max_user_connections"
|
|
// OfflineMode is the name for 'offline_mode' system variable.
|
|
OfflineMode = "offline_mode"
|
|
// InteractiveTimeout is the name for 'interactive_timeout' system variable.
|
|
InteractiveTimeout = "interactive_timeout"
|
|
// FlushTime is the name for 'flush_time' system variable.
|
|
FlushTime = "flush_time"
|
|
// PseudoSlaveMode is the name for 'pseudo_slave_mode' system variable.
|
|
PseudoSlaveMode = "pseudo_slave_mode"
|
|
// LowPriorityUpdates is the name for 'low_priority_updates' system variable.
|
|
LowPriorityUpdates = "low_priority_updates"
|
|
// LowerCaseTableNames is the name for 'lower_case_table_names' system variable.
|
|
LowerCaseTableNames = "lower_case_table_names"
|
|
// SessionTrackGtids is the name for 'session_track_gtids' system variable.
|
|
SessionTrackGtids = "session_track_gtids"
|
|
// OldPasswords is the name for 'old_passwords' system variable.
|
|
OldPasswords = "old_passwords"
|
|
// MaxConnections is the name for 'max_connections' system variable.
|
|
MaxConnections = "max_connections"
|
|
// SkipNameResolve is the name for 'skip_name_resolve' system variable.
|
|
SkipNameResolve = "skip_name_resolve"
|
|
// ForeignKeyChecks is the name for 'foreign_key_checks' system variable.
|
|
ForeignKeyChecks = "foreign_key_checks"
|
|
// SQLSafeUpdates is the name for 'sql_safe_updates' system variable.
|
|
SQLSafeUpdates = "sql_safe_updates"
|
|
// WarningCount is the name for 'warning_count' system variable.
|
|
WarningCount = "warning_count"
|
|
// ErrorCount is the name for 'error_count' system variable.
|
|
ErrorCount = "error_count"
|
|
// SQLSelectLimit is the name for 'sql_select_limit' system variable.
|
|
SQLSelectLimit = "sql_select_limit"
|
|
// MaxConnectErrors is the name for 'max_connect_errors' system variable.
|
|
MaxConnectErrors = "max_connect_errors"
|
|
// TableDefinitionCache is the name for 'table_definition_cache' system variable.
|
|
TableDefinitionCache = "table_definition_cache"
|
|
// TmpTableSize is the name for 'tmp_table_size' system variable.
|
|
TmpTableSize = "tmp_table_size"
|
|
// Timestamp is the name for 'timestamp' system variable.
|
|
Timestamp = "timestamp"
|
|
// ConnectTimeout is the name for 'connect_timeout' system variable.
|
|
ConnectTimeout = "connect_timeout"
|
|
// SyncBinlog is the name for 'sync_binlog' system variable.
|
|
SyncBinlog = "sync_binlog"
|
|
// BlockEncryptionMode is the name for 'block_encryption_mode' system variable.
|
|
BlockEncryptionMode = "block_encryption_mode"
|
|
// WaitTimeout is the name for 'wait_timeout' system variable.
|
|
WaitTimeout = "wait_timeout"
|
|
// ValidatePasswordNumberCount is the name of 'validate_password_number_count' system variable.
|
|
ValidatePasswordNumberCount = "validate_password_number_count"
|
|
// ValidatePasswordLength is the name of 'validate_password_length' system variable.
|
|
ValidatePasswordLength = "validate_password_length"
|
|
// Version is the name of 'version' system variable.
|
|
Version = "version"
|
|
// VersionComment is the name of 'version_comment' system variable.
|
|
VersionComment = "version_comment"
|
|
// PluginDir is the name of 'plugin_dir' system variable.
|
|
PluginDir = "plugin_dir"
|
|
// PluginLoad is the name of 'plugin_load' system variable.
|
|
PluginLoad = "plugin_load"
|
|
// Port is the name for 'port' system variable.
|
|
Port = "port"
|
|
// DataDir is the name for 'datadir' system variable.
|
|
DataDir = "datadir"
|
|
// Profiling is the name for 'Profiling' system variable.
|
|
Profiling = "profiling"
|
|
// Socket is the name for 'socket' system variable.
|
|
Socket = "socket"
|
|
// BinlogOrderCommits is the name for 'binlog_order_commits' system variable.
|
|
BinlogOrderCommits = "binlog_order_commits"
|
|
// MasterVerifyChecksum is the name for 'master_verify_checksum' system variable.
|
|
MasterVerifyChecksum = "master_verify_checksum"
|
|
// ValidatePasswordCheckUserName is the name for 'validate_password_check_user_name' system variable.
|
|
ValidatePasswordCheckUserName = "validate_password_check_user_name"
|
|
// SuperReadOnly is the name for 'super_read_only' system variable.
|
|
SuperReadOnly = "super_read_only"
|
|
// SQLNotes is the name for 'sql_notes' system variable.
|
|
SQLNotes = "sql_notes"
|
|
// QueryCacheType is the name for 'query_cache_type' system variable.
|
|
QueryCacheType = "query_cache_type"
|
|
// SlaveCompressedProtocol is the name for 'slave_compressed_protocol' system variable.
|
|
SlaveCompressedProtocol = "slave_compressed_protocol"
|
|
// BinlogRowQueryLogEvents is the name for 'binlog_rows_query_log_events' system variable.
|
|
BinlogRowQueryLogEvents = "binlog_rows_query_log_events"
|
|
// LogSlowSlaveStatements is the name for 'log_slow_slave_statements' system variable.
|
|
LogSlowSlaveStatements = "log_slow_slave_statements"
|
|
// LogSlowAdminStatements is the name for 'log_slow_admin_statements' system variable.
|
|
LogSlowAdminStatements = "log_slow_admin_statements"
|
|
// LogQueriesNotUsingIndexes is the name for 'log_queries_not_using_indexes' system variable.
|
|
LogQueriesNotUsingIndexes = "log_queries_not_using_indexes"
|
|
// QueryCacheWlockInvalidate is the name for 'query_cache_wlock_invalidate' system variable.
|
|
QueryCacheWlockInvalidate = "query_cache_wlock_invalidate"
|
|
// SQLAutoIsNull is the name for 'sql_auto_is_null' system variable.
|
|
SQLAutoIsNull = "sql_auto_is_null"
|
|
// RelayLogPurge is the name for 'relay_log_purge' system variable.
|
|
RelayLogPurge = "relay_log_purge"
|
|
// AutomaticSpPrivileges is the name for 'automatic_sp_privileges' system variable.
|
|
AutomaticSpPrivileges = "automatic_sp_privileges"
|
|
// SQLQuoteShowCreate is the name for 'sql_quote_show_create' system variable.
|
|
SQLQuoteShowCreate = "sql_quote_show_create"
|
|
// SlowQueryLog is the name for 'slow_query_log' system variable.
|
|
SlowQueryLog = "slow_query_log"
|
|
// BinlogDirectNonTransactionalUpdates is the name for 'binlog_direct_non_transactional_updates' system variable.
|
|
BinlogDirectNonTransactionalUpdates = "binlog_direct_non_transactional_updates"
|
|
// SQLBigSelects is the name for 'sql_big_selects' system variable.
|
|
SQLBigSelects = "sql_big_selects"
|
|
// LogBinTrustFunctionCreators is the name for 'log_bin_trust_function_creators' system variable.
|
|
LogBinTrustFunctionCreators = "log_bin_trust_function_creators"
|
|
// OldAlterTable is the name for 'old_alter_table' system variable.
|
|
OldAlterTable = "old_alter_table"
|
|
// EnforceGtidConsistency is the name for 'enforce_gtid_consistency' system variable.
|
|
EnforceGtidConsistency = "enforce_gtid_consistency"
|
|
// SecureAuth is the name for 'secure_auth' system variable.
|
|
SecureAuth = "secure_auth"
|
|
// UniqueChecks is the name for 'unique_checks' system variable.
|
|
UniqueChecks = "unique_checks"
|
|
// SQLWarnings is the name for 'sql_warnings' system variable.
|
|
SQLWarnings = "sql_warnings"
|
|
// AutoCommit is the name for 'autocommit' system variable.
|
|
AutoCommit = "autocommit"
|
|
// KeepFilesOnCreate is the name for 'keep_files_on_create' system variable.
|
|
KeepFilesOnCreate = "keep_files_on_create"
|
|
// ShowOldTemporals is the name for 'show_old_temporals' system variable.
|
|
ShowOldTemporals = "show_old_temporals"
|
|
// LocalInFile is the name for 'local_infile' system variable.
|
|
LocalInFile = "local_infile"
|
|
// PerformanceSchema is the name for 'performance_schema' system variable.
|
|
PerformanceSchema = "performance_schema"
|
|
// Flush is the name for 'flush' system variable.
|
|
Flush = "flush"
|
|
// SlaveAllowBatching is the name for 'slave_allow_batching' system variable.
|
|
SlaveAllowBatching = "slave_allow_batching"
|
|
// MyISAMUseMmap is the name for 'myisam_use_mmap' system variable.
|
|
MyISAMUseMmap = "myisam_use_mmap"
|
|
// InnodbFilePerTable is the name for 'innodb_file_per_table' system variable.
|
|
InnodbFilePerTable = "innodb_file_per_table"
|
|
// InnodbLogCompressedPages is the name for 'innodb_log_compressed_pages' system variable.
|
|
InnodbLogCompressedPages = "innodb_log_compressed_pages"
|
|
// InnodbPrintAllDeadlocks is the name for 'innodb_print_all_deadlocks' system variable.
|
|
InnodbPrintAllDeadlocks = "innodb_print_all_deadlocks"
|
|
// InnodbStrictMode is the name for 'innodb_strict_mode' system variable.
|
|
InnodbStrictMode = "innodb_strict_mode"
|
|
// InnodbCmpPerIndexEnabled is the name for 'innodb_cmp_per_index_enabled' system variable.
|
|
InnodbCmpPerIndexEnabled = "innodb_cmp_per_index_enabled"
|
|
// InnodbBufferPoolDumpAtShutdown is the name for 'innodb_buffer_pool_dump_at_shutdown' system variable.
|
|
InnodbBufferPoolDumpAtShutdown = "innodb_buffer_pool_dump_at_shutdown"
|
|
// InnodbAdaptiveHashIndex is the name for 'innodb_adaptive_hash_index' system variable.
|
|
InnodbAdaptiveHashIndex = "innodb_adaptive_hash_index"
|
|
// InnodbFtEnableStopword is the name for 'innodb_ft_enable_stopword' system variable.
|
|
InnodbFtEnableStopword = "innodb_ft_enable_stopword"
|
|
// InnodbSupportXA is the name for 'innodb_support_xa' system variable.
|
|
InnodbSupportXA = "innodb_support_xa"
|
|
// InnodbOptimizeFullTextOnly is the name for 'innodb_optimize_fulltext_only' system variable.
|
|
InnodbOptimizeFullTextOnly = "innodb_optimize_fulltext_only"
|
|
// InnodbStatusOutputLocks is the name for 'innodb_status_output_locks' system variable.
|
|
InnodbStatusOutputLocks = "innodb_status_output_locks"
|
|
// InnodbBufferPoolDumpNow is the name for 'innodb_buffer_pool_dump_now' system variable.
|
|
InnodbBufferPoolDumpNow = "innodb_buffer_pool_dump_now"
|
|
// InnodbBufferPoolLoadNow is the name for 'innodb_buffer_pool_load_now' system variable.
|
|
InnodbBufferPoolLoadNow = "innodb_buffer_pool_load_now"
|
|
// InnodbStatsOnMetadata is the name for 'innodb_stats_on_metadata' system variable.
|
|
InnodbStatsOnMetadata = "innodb_stats_on_metadata"
|
|
// InnodbDisableSortFileCache is the name for 'innodb_disable_sort_file_cache' system variable.
|
|
InnodbDisableSortFileCache = "innodb_disable_sort_file_cache"
|
|
// InnodbStatsAutoRecalc is the name for 'innodb_stats_auto_recalc' system variable.
|
|
InnodbStatsAutoRecalc = "innodb_stats_auto_recalc"
|
|
// InnodbBufferPoolLoadAbort is the name for 'innodb_buffer_pool_load_abort' system variable.
|
|
InnodbBufferPoolLoadAbort = "innodb_buffer_pool_load_abort"
|
|
// InnodbStatsPersistent is the name for 'innodb_stats_persistent' system variable.
|
|
InnodbStatsPersistent = "innodb_stats_persistent"
|
|
// InnodbRandomReadAhead is the name for 'innodb_random_read_ahead' system variable.
|
|
InnodbRandomReadAhead = "innodb_random_read_ahead"
|
|
// InnodbAdaptiveFlushing is the name for 'innodb_adaptive_flushing' system variable.
|
|
InnodbAdaptiveFlushing = "innodb_adaptive_flushing"
|
|
// InnodbTableLocks is the name for 'innodb_table_locks' system variable.
|
|
InnodbTableLocks = "innodb_table_locks"
|
|
// InnodbStatusOutput is the name for 'innodb_status_output' system variable.
|
|
InnodbStatusOutput = "innodb_status_output"
|
|
// NetBufferLength is the name for 'net_buffer_length' system variable.
|
|
NetBufferLength = "net_buffer_length"
|
|
// QueryCacheSize is the name of 'query_cache_size' system variable.
|
|
QueryCacheSize = "query_cache_size"
|
|
// TxReadOnly is the name of 'tx_read_only' system variable.
|
|
TxReadOnly = "tx_read_only"
|
|
// TransactionReadOnly is the name of 'transaction_read_only' system variable.
|
|
TransactionReadOnly = "transaction_read_only"
|
|
// CharacterSetServer is the name of 'character_set_server' system variable.
|
|
CharacterSetServer = "character_set_server"
|
|
// AutoIncrementIncrement is the name of 'auto_increment_increment' system variable.
|
|
AutoIncrementIncrement = "auto_increment_increment"
|
|
// AutoIncrementOffset is the name of 'auto_increment_offset' system variable.
|
|
AutoIncrementOffset = "auto_increment_offset"
|
|
// InitConnect is the name of 'init_connect' system variable.
|
|
InitConnect = "init_connect"
|
|
// CollationServer is the name of 'collation_server' variable.
|
|
CollationServer = "collation_server"
|
|
// NetWriteTimeout is the name of 'net_write_timeout' variable.
|
|
NetWriteTimeout = "net_write_timeout"
|
|
// ThreadPoolSize is the name of 'thread_pool_size' variable.
|
|
ThreadPoolSize = "thread_pool_size"
|
|
// WindowingUseHighPrecision is the name of 'windowing_use_high_precision' system variable.
|
|
WindowingUseHighPrecision = "windowing_use_high_precision"
|
|
// OptimizerSwitch is the name of 'optimizer_switch' system variable.
|
|
OptimizerSwitch = "optimizer_switch"
|
|
// SystemTimeZone is the name of 'system_time_zone' system variable.
|
|
SystemTimeZone = "system_time_zone"
|
|
// CTEMaxRecursionDepth is the name of 'cte_max_recursion_depth' system variable.
|
|
CTEMaxRecursionDepth = "cte_max_recursion_depth"
|
|
)
|
|
|
|
// GlobalVarAccessor is the interface for accessing global scope system and status variables.
|
|
type GlobalVarAccessor interface {
|
|
// GetGlobalSysVar gets the global system variable value for name.
|
|
GetGlobalSysVar(name string) (string, error)
|
|
// SetGlobalSysVar sets the global system variable name to value.
|
|
SetGlobalSysVar(name string, value string) error
|
|
// SetGlobalSysVarOnly sets the global system variable without calling the validation function or updating aliases.
|
|
SetGlobalSysVarOnly(name string, value string) error
|
|
}
|