octoleo/gh-ost
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #277 from github/enum-sort-test

Browse Source 
WIP testing enum as part of PK
This commit is contained in:
Shlomi Noach 2016-10-26 09:58:18 +02:00 committed by GitHub
commit d5e78e4b58
7 changed files with 87 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
doc/requirements-and-limitations.md
View File

@ -43,3 +43,4 @@ The `SUPER` privilege is required for `STOP SLAVE`, `START SLAVE` operations. Th
- Multisource is not supported when migrating via replica. It _should_ work (but never tested) when connecting directly to master (`--allow-on-master`)
- Master-master setup is only supported in active-passive setup. Active-active (where table is being written to on both masters concurrently) is unsupported. It may be supported in the future.
- If you have en `enum` field as part of your migration key (typically the `PRIMARY KEY`), migration performance will be degraded and potentially bad. [Read more](https://github.com/github/gh-ost/pull/277#issuecomment-254811520)

8
go/logic/applier.go
View File

@ -328,7 +328,7 @@ func (this *Applier) ExecuteThrottleQuery() (int64, error) {
// ReadMigrationMinValues returns the minimum values to be iterated on rowcopy
func (this *Applier) ReadMigrationMinValues(uniqueKey *sql.UniqueKey) error {
log.Debugf("Reading migration range according to key: %s", uniqueKey.Name)
query, err := sql.BuildUniqueKeyMinValuesPreparedQuery(this.migrationContext.DatabaseName, this.migrationContext.OriginalTableName, uniqueKey.Columns.Names())
query, err := sql.BuildUniqueKeyMinValuesPreparedQuery(this.migrationContext.DatabaseName, this.migrationContext.OriginalTableName, &uniqueKey.Columns)
if err != nil {
return err
}
@ -349,7 +349,7 @@ func (this *Applier) ReadMigrationMinValues(uniqueKey *sql.UniqueKey) error {
// ReadMigrationMaxValues returns the maximum values to be iterated on rowcopy
func (this *Applier) ReadMigrationMaxValues(uniqueKey *sql.UniqueKey) error {
log.Debugf("Reading migration range according to key: %s", uniqueKey.Name)
query, err := sql.BuildUniqueKeyMaxValuesPreparedQuery(this.migrationContext.DatabaseName, this.migrationContext.OriginalTableName, uniqueKey.Columns.Names())
query, err := sql.BuildUniqueKeyMaxValuesPreparedQuery(this.migrationContext.DatabaseName, this.migrationContext.OriginalTableName, &uniqueKey.Columns)
if err != nil {
return err
}
@ -390,7 +390,7 @@ func (this *Applier) CalculateNextIterationRangeEndValues() (hasFurtherRange boo
query, explodedArgs, err := sql.BuildUniqueKeyRangeEndPreparedQuery(
this.migrationContext.DatabaseName,
this.migrationContext.OriginalTableName,
this.migrationContext.UniqueKey.Columns.Names(),
&this.migrationContext.UniqueKey.Columns,
this.migrationContext.MigrationIterationRangeMinValues.AbstractValues(),
this.migrationContext.MigrationRangeMaxValues.AbstractValues(),
atomic.LoadInt64(&this.migrationContext.ChunkSize),
@ -432,7 +432,7 @@ func (this *Applier) ApplyIterationInsertQuery() (chunkSize int64, rowsAffected
this.migrationContext.SharedColumns.Names(),
this.migrationContext.MappedSharedColumns.Names(),
this.migrationContext.UniqueKey.Name,
this.migrationContext.UniqueKey.Columns.Names(),
&this.migrationContext.UniqueKey.Columns,
this.migrationContext.MigrationIterationRangeMinValues.AbstractValues(),
this.migrationContext.MigrationIterationRangeMaxValues.AbstractValues(),
this.migrationContext.GetIteration() == 0,

6
go/logic/inspect.go
View File

@ -143,6 +143,7 @@ func (this *Inspector) inspectOriginalAndGhostTables() (err error) {
// the `getTableColumns()` function, but it's a later patch and introduces some complexity; I feel
// comfortable in doing this as a separate step.
this.applyColumnTypes(this.migrationContext.DatabaseName, this.migrationContext.OriginalTableName, this.migrationContext.OriginalTableColumns, this.migrationContext.SharedColumns)
this.applyColumnTypes(this.migrationContext.DatabaseName, this.migrationContext.OriginalTableName, &this.migrationContext.UniqueKey.Columns)
this.applyColumnTypes(this.migrationContext.DatabaseName, this.migrationContext.GetGhostTableName(), this.migrationContext.GhostTableColumns, this.migrationContext.MappedSharedColumns)
for i := range this.migrationContext.SharedColumns.Columns() {
@ -514,6 +515,11 @@ func (this *Inspector) applyColumnTypes(databaseName, tableName string, columnsL
columnsList.GetColumn(columnName).Type = sql.DateTimeColumnType
}
}
if strings.HasPrefix(columnType, "enum") {
for _, columnsList := range columnsLists {
columnsList.GetColumn(columnName).Type = sql.EnumColumnValue
}
}
if charset := m.GetString("CHARACTER_SET_NAME"); charset != "" {
for _, columnsList := range columnsLists {
columnsList.SetCharset(columnName, charset)

69
go/sql/builder.go
View File

@ -170,12 +170,12 @@ func BuildRangeComparison(columns []string, values []string, args []interface{},
return result, explodedArgs, nil
}
func BuildRangePreparedComparison(columns []string, args []interface{}, comparisonSign ValueComparisonSign) (result string, explodedArgs []interface{}, err error) {
values := buildPreparedValues(len(columns))
return BuildRangeComparison(columns, values, args, comparisonSign)
func BuildRangePreparedComparison(columns *ColumnList, args []interface{}, comparisonSign ValueComparisonSign) (result string, explodedArgs []interface{}, err error) {
values := buildColumnsPreparedValues(columns)
return BuildRangeComparison(columns.Names(), values, args, comparisonSign)
}
func BuildRangeInsertQuery(databaseName, originalTableName, ghostTableName string, sharedColumns []string, mappedSharedColumns []string, uniqueKey string, uniqueKeyColumns, rangeStartValues, rangeEndValues []string, rangeStartArgs, rangeEndArgs []interface{}, includeRangeStartValues bool, transactionalTable bool) (result string, explodedArgs []interface{}, err error) {
func BuildRangeInsertQuery(databaseName, originalTableName, ghostTableName string, sharedColumns []string, mappedSharedColumns []string, uniqueKey string, uniqueKeyColumns *ColumnList, rangeStartValues, rangeEndValues []string, rangeStartArgs, rangeEndArgs []interface{}, includeRangeStartValues bool, transactionalTable bool) (result string, explodedArgs []interface{}, err error) {
if len(sharedColumns) == 0 {
return "", explodedArgs, fmt.Errorf("Got 0 shared columns in BuildRangeInsertQuery")
}
@ -200,12 +200,12 @@ func BuildRangeInsertQuery(databaseName, originalTableName, ghostTableName strin
if includeRangeStartValues {
minRangeComparisonSign = GreaterThanOrEqualsComparisonSign
}
rangeStartComparison, rangeExplodedArgs, err := BuildRangeComparison(uniqueKeyColumns, rangeStartValues, rangeStartArgs, minRangeComparisonSign)
rangeStartComparison, rangeExplodedArgs, err := BuildRangeComparison(uniqueKeyColumns.Names(), rangeStartValues, rangeStartArgs, minRangeComparisonSign)
if err != nil {
return "", explodedArgs, err
}
explodedArgs = append(explodedArgs, rangeExplodedArgs...)
rangeEndComparison, rangeExplodedArgs, err := BuildRangeComparison(uniqueKeyColumns, rangeEndValues, rangeEndArgs, LessThanOrEqualsComparisonSign)
rangeEndComparison, rangeExplodedArgs, err := BuildRangeComparison(uniqueKeyColumns.Names(), rangeEndValues, rangeEndArgs, LessThanOrEqualsComparisonSign)
if err != nil {
return "", explodedArgs, err
}
@ -225,14 +225,14 @@ func BuildRangeInsertQuery(databaseName, originalTableName, ghostTableName strin
return result, explodedArgs, nil
}
func BuildRangeInsertPreparedQuery(databaseName, originalTableName, ghostTableName string, sharedColumns []string, mappedSharedColumns []string, uniqueKey string, uniqueKeyColumns []string, rangeStartArgs, rangeEndArgs []interface{}, includeRangeStartValues bool, transactionalTable bool) (result string, explodedArgs []interface{}, err error) {
rangeStartValues := buildPreparedValues(len(uniqueKeyColumns))
rangeEndValues := buildPreparedValues(len(uniqueKeyColumns))
func BuildRangeInsertPreparedQuery(databaseName, originalTableName, ghostTableName string, sharedColumns []string, mappedSharedColumns []string, uniqueKey string, uniqueKeyColumns *ColumnList, rangeStartArgs, rangeEndArgs []interface{}, includeRangeStartValues bool, transactionalTable bool) (result string, explodedArgs []interface{}, err error) {
rangeStartValues := buildColumnsPreparedValues(uniqueKeyColumns)
rangeEndValues := buildColumnsPreparedValues(uniqueKeyColumns)
return BuildRangeInsertQuery(databaseName, originalTableName, ghostTableName, sharedColumns, mappedSharedColumns, uniqueKey, uniqueKeyColumns, rangeStartValues, rangeEndValues, rangeStartArgs, rangeEndArgs, includeRangeStartValues, transactionalTable)
}
func BuildUniqueKeyRangeEndPreparedQuery(databaseName, tableName string, uniqueKeyColumns []string, rangeStartArgs, rangeEndArgs []interface{}, chunkSize int64, includeRangeStartValues bool, hint string) (result string, explodedArgs []interface{}, err error) {
if len(uniqueKeyColumns) == 0 {
func BuildUniqueKeyRangeEndPreparedQuery(databaseName, tableName string, uniqueKeyColumns *ColumnList, rangeStartArgs, rangeEndArgs []interface{}, chunkSize int64, includeRangeStartValues bool, hint string) (result string, explodedArgs []interface{}, err error) {
if uniqueKeyColumns.Len() == 0 {
return "", explodedArgs, fmt.Errorf("Got 0 columns in BuildUniqueKeyRangeEndPreparedQuery")
}
databaseName = EscapeName(databaseName)
@ -253,13 +253,18 @@ func BuildUniqueKeyRangeEndPreparedQuery(databaseName, tableName string, uniqueK
}
explodedArgs = append(explodedArgs, rangeExplodedArgs...)
uniqueKeyColumns = duplicateNames(uniqueKeyColumns)
uniqueKeyColumnAscending := make([]string, len(uniqueKeyColumns), len(uniqueKeyColumns))
uniqueKeyColumnDescending := make([]string, len(uniqueKeyColumns), len(uniqueKeyColumns))
for i := range uniqueKeyColumns {
uniqueKeyColumns[i] = EscapeName(uniqueKeyColumns[i])
uniqueKeyColumnAscending[i] = fmt.Sprintf("%s asc", uniqueKeyColumns[i])
uniqueKeyColumnDescending[i] = fmt.Sprintf("%s desc", uniqueKeyColumns[i])
uniqueKeyColumnNames := duplicateNames(uniqueKeyColumns.Names())
uniqueKeyColumnAscending := make([]string, len(uniqueKeyColumnNames), len(uniqueKeyColumnNames))
uniqueKeyColumnDescending := make([]string, len(uniqueKeyColumnNames), len(uniqueKeyColumnNames))
for i, column := range uniqueKeyColumns.Columns() {
uniqueKeyColumnNames[i] = EscapeName(uniqueKeyColumnNames[i])
if column.Type == EnumColumnValue {
uniqueKeyColumnAscending[i] = fmt.Sprintf("concat(%s) asc", uniqueKeyColumnNames[i])
uniqueKeyColumnDescending[i] = fmt.Sprintf("concat(%s) desc", uniqueKeyColumnNames[i])
} else {
uniqueKeyColumnAscending[i] = fmt.Sprintf("%s asc", uniqueKeyColumnNames[i])
uniqueKeyColumnDescending[i] = fmt.Sprintf("%s desc", uniqueKeyColumnNames[i])
}
}
result = fmt.Sprintf(`
select /* gh-ost %s.%s %s */ %s
@ -276,8 +281,8 @@ func BuildUniqueKeyRangeEndPreparedQuery(databaseName, tableName string, uniqueK
order by
%s
limit 1
`, databaseName, tableName, hint, strings.Join(uniqueKeyColumns, ", "),
strings.Join(uniqueKeyColumns, ", "), databaseName, tableName,
`, databaseName, tableName, hint, strings.Join(uniqueKeyColumnNames, ", "),
strings.Join(uniqueKeyColumnNames, ", "), databaseName, tableName,
rangeStartComparison, rangeEndComparison,
strings.Join(uniqueKeyColumnAscending, ", "), chunkSize,
strings.Join(uniqueKeyColumnDescending, ", "),
@ -285,26 +290,30 @@ func BuildUniqueKeyRangeEndPreparedQuery(databaseName, tableName string, uniqueK
return result, explodedArgs, nil
}
func BuildUniqueKeyMinValuesPreparedQuery(databaseName, tableName string, uniqueKeyColumns []string) (string, error) {
func BuildUniqueKeyMinValuesPreparedQuery(databaseName, tableName string, uniqueKeyColumns *ColumnList) (string, error) {
return buildUniqueKeyMinMaxValuesPreparedQuery(databaseName, tableName, uniqueKeyColumns, "asc")
}
func BuildUniqueKeyMaxValuesPreparedQuery(databaseName, tableName string, uniqueKeyColumns []string) (string, error) {
func BuildUniqueKeyMaxValuesPreparedQuery(databaseName, tableName string, uniqueKeyColumns *ColumnList) (string, error) {
return buildUniqueKeyMinMaxValuesPreparedQuery(databaseName, tableName, uniqueKeyColumns, "desc")
}
func buildUniqueKeyMinMaxValuesPreparedQuery(databaseName, tableName string, uniqueKeyColumns []string, order string) (string, error) {
if len(uniqueKeyColumns) == 0 {
func buildUniqueKeyMinMaxValuesPreparedQuery(databaseName, tableName string, uniqueKeyColumns *ColumnList, order string) (string, error) {
if uniqueKeyColumns.Len() == 0 {
return "", fmt.Errorf("Got 0 columns in BuildUniqueKeyMinMaxValuesPreparedQuery")
}
databaseName = EscapeName(databaseName)
tableName = EscapeName(tableName)
uniqueKeyColumns = duplicateNames(uniqueKeyColumns)
uniqueKeyColumnOrder := make([]string, len(uniqueKeyColumns), len(uniqueKeyColumns))
for i := range uniqueKeyColumns {
uniqueKeyColumns[i] = EscapeName(uniqueKeyColumns[i])
uniqueKeyColumnOrder[i] = fmt.Sprintf("%s %s", uniqueKeyColumns[i], order)
uniqueKeyColumnNames := duplicateNames(uniqueKeyColumns.Names())
uniqueKeyColumnOrder := make([]string, len(uniqueKeyColumnNames), len(uniqueKeyColumnNames))
for i, column := range uniqueKeyColumns.Columns() {
uniqueKeyColumnNames[i] = EscapeName(uniqueKeyColumnNames[i])
if column.Type == EnumColumnValue {
uniqueKeyColumnOrder[i] = fmt.Sprintf("concat(%s) %s", uniqueKeyColumnNames[i], order)
} else {
uniqueKeyColumnOrder[i] = fmt.Sprintf("%s %s", uniqueKeyColumnNames[i], order)
}
}
query := fmt.Sprintf(`
select /* gh-ost %s.%s */ %s
@ -313,7 +322,7 @@ func buildUniqueKeyMinMaxValuesPreparedQuery(databaseName, tableName string, uni
order by
%s
limit 1
`, databaseName, tableName, strings.Join(uniqueKeyColumns, ", "),
`, databaseName, tableName, strings.Join(uniqueKeyColumnNames, ", "),
databaseName, tableName,
strings.Join(uniqueKeyColumnOrder, ", "),
)

14
go/sql/builder_test.go
View File

@ -166,7 +166,7 @@ func TestBuildRangeInsertQuery(t *testing.T) {
sharedColumns := []string{"id", "name", "position"}
{
uniqueKey := "PRIMARY"
uniqueKeyColumns := []string{"id"}
uniqueKeyColumns := NewColumnList([]string{"id"})
rangeStartValues := []string{"@v1s"}
rangeEndValues := []string{"@v1e"}
rangeStartArgs := []interface{}{3}
@ -185,7 +185,7 @@ func TestBuildRangeInsertQuery(t *testing.T) {
}
{
uniqueKey := "name_position_uidx"
uniqueKeyColumns := []string{"name", "position"}
uniqueKeyColumns := NewColumnList([]string{"name", "position"})
rangeStartValues := []string{"@v1s", "@v2s"}
rangeEndValues := []string{"@v1e", "@v2e"}
rangeStartArgs := []interface{}{3, 17}
@ -212,7 +212,7 @@ func TestBuildRangeInsertQueryRenameMap(t *testing.T) {
mappedSharedColumns := []string{"id", "name", "location"}
{
uniqueKey := "PRIMARY"
uniqueKeyColumns := []string{"id"}
uniqueKeyColumns := NewColumnList([]string{"id"})
rangeStartValues := []string{"@v1s"}
rangeEndValues := []string{"@v1e"}
rangeStartArgs := []interface{}{3}
@ -231,7 +231,7 @@ func TestBuildRangeInsertQueryRenameMap(t *testing.T) {
}
{
uniqueKey := "name_position_uidx"
uniqueKeyColumns := []string{"name", "position"}
uniqueKeyColumns := NewColumnList([]string{"name", "position"})
rangeStartValues := []string{"@v1s", "@v2s"}
rangeEndValues := []string{"@v1e", "@v2e"}
rangeStartArgs := []interface{}{3, 17}
@ -257,7 +257,7 @@ func TestBuildRangeInsertPreparedQuery(t *testing.T) {
sharedColumns := []string{"id", "name", "position"}
{
uniqueKey := "name_position_uidx"
uniqueKeyColumns := []string{"name", "position"}
uniqueKeyColumns := NewColumnList([]string{"name", "position"})
rangeStartArgs := []interface{}{3, 17}
rangeEndArgs := []interface{}{103, 117}
@ -279,7 +279,7 @@ func TestBuildUniqueKeyRangeEndPreparedQuery(t *testing.T) {
originalTableName := "tbl"
var chunkSize int64 = 500
{
uniqueKeyColumns := []string{"name", "position"}
uniqueKeyColumns := NewColumnList([]string{"name", "position"})
rangeStartArgs := []interface{}{3, 17}
rangeEndArgs := []interface{}{103, 117}
@ -309,7 +309,7 @@ func TestBuildUniqueKeyRangeEndPreparedQuery(t *testing.T) {
func TestBuildUniqueKeyMinValuesPreparedQuery(t *testing.T) {
databaseName := "mydb"
originalTableName := "tbl"
uniqueKeyColumns := []string{"name", "position"}
uniqueKeyColumns := NewColumnList([]string{"name", "position"})
{
query, err := BuildUniqueKeyMinValuesPreparedQuery(databaseName, originalTableName, uniqueKeyColumns)
test.S(t).ExpectNil(err)

1
go/sql/types.go
View File

@ -18,6 +18,7 @@ const (
UnknownColumnType ColumnType = iota
TimestampColumnType = iota
DateTimeColumnType = iota
EnumColumnValue = iota
)
type TimezoneConvertion struct {

29
localtests/enum-pk/create.sql Normal file
View File

@ -0,0 +1,29 @@
drop table if exists gh_ost_test;
create table gh_ost_test (
id int auto_increment,
i int not null,
e enum('red', 'green', 'blue', 'orange') null default null collate 'utf8_bin',
primary key(id, e)
) auto_increment=1;
drop event if exists gh_ost_test;
delimiter ;;
create event gh_ost_test
on schedule every 1 second
starts current_timestamp
ends current_timestamp + interval 60 second
on completion not preserve
enable
do
begin
insert into gh_ost_test values (null, 11, 'red');
set @last_insert_id := last_insert_id();
insert into gh_ost_test values (@last_insert_id, 11, 'green');
insert into gh_ost_test values (null, 13, 'green');
insert into gh_ost_test values (null, 17, 'blue');
set @last_insert_id := last_insert_id();
update gh_ost_test set e='orange' where id = @last_insert_id;
insert into gh_ost_test values (null, 23, null);
set @last_insert_id := last_insert_id();
update gh_ost_test set i=i+1, e=null where id = @last_insert_id;
end ;;