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db_test.go
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// 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 ddl_test
import (
"context"
"fmt"
"io"
"math"
"math/rand"
"sort"
"strconv"
"strings"
"sync"
"time"
. "github.com/pingcap/check"
"github.com/pingcap/errors"
"github.com/pingcap/failpoint"
"github.com/pingcap/parser/ast"
"github.com/pingcap/parser/model"
"github.com/pingcap/parser/mysql"
"github.com/pingcap/parser/terror"
parsertypes "github.com/pingcap/parser/types"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/ddl"
testddlutil "github.com/pingcap/tidb/ddl/testutil"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/errno"
"github.com/pingcap/tidb/executor"
"github.com/pingcap/tidb/infoschema"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/meta"
"github.com/pingcap/tidb/meta/autoid"
"github.com/pingcap/tidb/session"
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/store/mockstore"
"github.com/pingcap/tidb/store/tikv/mockstore/cluster"
"github.com/pingcap/tidb/table"
"github.com/pingcap/tidb/table/tables"
"github.com/pingcap/tidb/tablecodec"
"github.com/pingcap/tidb/types"
"github.com/pingcap/tidb/util/admin"
"github.com/pingcap/tidb/util/codec"
"github.com/pingcap/tidb/util/collate"
"github.com/pingcap/tidb/util/domainutil"
"github.com/pingcap/tidb/util/israce"
"github.com/pingcap/tidb/util/mock"
"github.com/pingcap/tidb/util/testkit"
"github.com/pingcap/tidb/util/testutil"
)
const (
// waitForCleanDataRound indicates how many times should we check data is cleaned or not.
waitForCleanDataRound = 150
// waitForCleanDataInterval is a min duration between 2 check for data clean.
waitForCleanDataInterval = time.Millisecond * 100
)
var _ = Suite(&testDBSuite1{&testDBSuite{}})
var _ = Suite(&testDBSuite2{&testDBSuite{}})
var _ = Suite(&testDBSuite3{&testDBSuite{}})
var _ = Suite(&testDBSuite4{&testDBSuite{}})
var _ = Suite(&testDBSuite5{&testDBSuite{}})
var _ = Suite(&testDBSuite6{&testDBSuite{}})
var _ = Suite(&testDBSuite7{&testDBSuite{}})
var _ = Suite(&testDBSuite8{&testDBSuite{}})
var _ = SerialSuites(&testSerialDBSuite{&testDBSuite{}})
var _ = SerialSuites(&testSerialDBSuite1{&testDBSuite{}})
const defaultBatchSize = 1024
const defaultReorgBatchSize = 256
type testDBSuite struct {
cluster cluster.Cluster
store kv.Storage
dom *domain.Domain
schemaName string
s session.Session
lease time.Duration
autoIDStep int64
ctx sessionctx.Context
}
func setUpSuite(s *testDBSuite, c *C) {
var err error
s.lease = 600 * time.Millisecond
session.SetSchemaLease(s.lease)
session.DisableStats4Test()
s.schemaName = "test_db"
s.autoIDStep = autoid.GetStep()
ddl.SetWaitTimeWhenErrorOccurred(0)
s.store, err = mockstore.NewMockStore(
mockstore.WithClusterInspector(func(c cluster.Cluster) {
mockstore.BootstrapWithSingleStore(c)
s.cluster = c
}),
)
c.Assert(err, IsNil)
s.dom, err = session.BootstrapSession(s.store)
c.Assert(err, IsNil)
s.s, err = session.CreateSession4Test(s.store)
c.Assert(err, IsNil)
s.ctx = s.s.(sessionctx.Context)
_, err = s.s.Execute(context.Background(), "create database test_db")
c.Assert(err, IsNil)
_, err = s.s.Execute(context.Background(), "set @@global.tidb_max_delta_schema_count= 4096")
c.Assert(err, IsNil)
}
func tearDownSuite(s *testDBSuite, c *C) {
_, err := s.s.Execute(context.Background(), "drop database if exists test_db")
c.Assert(err, IsNil)
s.s.Close()
s.dom.Close()
err = s.store.Close()
c.Assert(err, IsNil)
}
func (s *testDBSuite) SetUpSuite(c *C) {
setUpSuite(s, c)
}
func (s *testDBSuite) TearDownSuite(c *C) {
tearDownSuite(s, c)
}
type testDBSuite1 struct{ *testDBSuite }
type testDBSuite2 struct{ *testDBSuite }
type testDBSuite3 struct{ *testDBSuite }
type testDBSuite4 struct{ *testDBSuite }
type testDBSuite5 struct{ *testDBSuite }
type testDBSuite6 struct{ *testDBSuite }
type testDBSuite7 struct{ *testDBSuite }
type testDBSuite8 struct{ *testDBSuite }
type testSerialDBSuite struct{ *testDBSuite }
type testSerialDBSuite1 struct{ *testDBSuite }
func testAddIndexWithPK(tk *testkit.TestKit) {
tk.MustExec("drop table if exists test_add_index_with_pk")
tk.MustExec("create table test_add_index_with_pk(a int not null, b int not null default '0', primary key(a))")
tk.MustExec("insert into test_add_index_with_pk values(1, 2)")
tk.MustExec("alter table test_add_index_with_pk add index idx (a)")
tk.MustQuery("select a from test_add_index_with_pk").Check(testkit.Rows("1"))
tk.MustExec("insert into test_add_index_with_pk values(2, 2)")
tk.MustExec("alter table test_add_index_with_pk add index idx1 (a, b)")
tk.MustQuery("select * from test_add_index_with_pk").Check(testkit.Rows("1 2", "2 2"))
tk.MustExec("drop table if exists test_add_index_with_pk1")
tk.MustExec("create table test_add_index_with_pk1(a int not null, b int not null default '0', c int, d int, primary key(c))")
tk.MustExec("insert into test_add_index_with_pk1 values(1, 1, 1, 1)")
tk.MustExec("alter table test_add_index_with_pk1 add index idx (c)")
tk.MustExec("insert into test_add_index_with_pk1 values(2, 2, 2, 2)")
tk.MustQuery("select * from test_add_index_with_pk1").Check(testkit.Rows("1 1 1 1", "2 2 2 2"))
tk.MustExec("drop table if exists test_add_index_with_pk2")
tk.MustExec("create table test_add_index_with_pk2(a int not null, b int not null default '0', c int unsigned, d int, primary key(c))")
tk.MustExec("insert into test_add_index_with_pk2 values(1, 1, 1, 1)")
tk.MustExec("alter table test_add_index_with_pk2 add index idx (c)")
tk.MustExec("insert into test_add_index_with_pk2 values(2, 2, 2, 2)")
tk.MustQuery("select * from test_add_index_with_pk2").Check(testkit.Rows("1 1 1 1", "2 2 2 2"))
tk.MustExec("drop table if exists t")
tk.MustExec("create table t (a int, b int, c int, primary key(a, b));")
tk.MustExec("insert into t values (1, 2, 3);")
tk.MustExec("create index idx on t (a, b);")
}
func (s *testDBSuite7) TestAddIndexWithPK(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use " + s.schemaName)
testAddIndexWithPK(tk)
tk.Se.GetSessionVars().EnableClusteredIndex = variable.ClusteredIndexDefModeOn
testAddIndexWithPK(tk)
}
func (s *testDBSuite5) TestAddIndexWithDupIndex(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use " + s.schemaName)
err1 := ddl.ErrDupKeyName.GenWithStack("index already exist %s", "idx")
err2 := ddl.ErrDupKeyName.GenWithStack("index already exist %s; "+
"a background job is trying to add the same index, "+
"please check by `ADMIN SHOW DDL JOBS`", "idx")
// When there is already an duplicate index, show error message.
tk.MustExec("create table test_add_index_with_dup (a int, key idx (a))")
_, err := tk.Exec("alter table test_add_index_with_dup add index idx (a)")
c.Check(errors.Cause(err1).(*terror.Error).Equal(err), Equals, true)
c.Assert(errors.Cause(err1).Error() == err.Error(), IsTrue)
// When there is another session adding duplicate index with state other than
// StatePublic, show explicit error message.
t := s.testGetTable(c, "test_add_index_with_dup")
indexInfo := t.Meta().FindIndexByName("idx")
indexInfo.State = model.StateNone
_, err = tk.Exec("alter table test_add_index_with_dup add index idx (a)")
c.Check(errors.Cause(err2).(*terror.Error).Equal(err), Equals, true)
c.Assert(errors.Cause(err2).Error() == err.Error(), IsTrue)
tk.MustExec("drop table test_add_index_with_dup")
}
func (s *testDBSuite1) TestRenameIndex(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use " + s.schemaName)
tk.MustExec("create table t (pk int primary key, c int default 1, c1 int default 1, unique key k1(c), key k2(c1))")
// Test rename success
tk.MustExec("alter table t rename index k1 to k3")
tk.MustExec("admin check index t k3")
// Test rename to the same name
tk.MustExec("alter table t rename index k3 to k3")
tk.MustExec("admin check index t k3")
// Test rename on non-exists keys
tk.MustGetErrCode("alter table t rename index x to x", errno.ErrKeyDoesNotExist)
// Test rename on already-exists keys
tk.MustGetErrCode("alter table t rename index k3 to k2", errno.ErrDupKeyName)
tk.MustExec("alter table t rename index k2 to K2")
tk.MustGetErrCode("alter table t rename key k3 to K2", errno.ErrDupKeyName)
}
func testGetTableByName(c *C, ctx sessionctx.Context, db, table string) table.Table {
dom := domain.GetDomain(ctx)
// Make sure the table schema is the new schema.
err := dom.Reload()
c.Assert(err, IsNil)
tbl, err := dom.InfoSchema().TableByName(model.NewCIStr(db), model.NewCIStr(table))
c.Assert(err, IsNil)
return tbl
}
func testGetSchemaByName(c *C, ctx sessionctx.Context, db string) *model.DBInfo {
dom := domain.GetDomain(ctx)
// Make sure the table schema is the new schema.
err := dom.Reload()
c.Assert(err, IsNil)
dbInfo, ok := dom.InfoSchema().SchemaByName(model.NewCIStr(db))
c.Assert(ok, IsTrue)
return dbInfo
}
func (s *testDBSuite) testGetTable(c *C, name string) table.Table {
ctx := s.s.(sessionctx.Context)
return testGetTableByName(c, ctx, s.schemaName, name)
}
func (s *testDBSuite) testGetDB(c *C, dbName string) *model.DBInfo {
ctx := s.s.(sessionctx.Context)
dom := domain.GetDomain(ctx)
// Make sure the table schema is the new schema.
err := dom.Reload()
c.Assert(err, IsNil)
db, ok := dom.InfoSchema().SchemaByName(model.NewCIStr(dbName))
c.Assert(ok, IsTrue)
return db
}
func backgroundExec(s kv.Storage, sql string, done chan error) {
se, err := session.CreateSession4Test(s)
if err != nil {
done <- errors.Trace(err)
return
}
defer se.Close()
_, err = se.Execute(context.Background(), "use test_db")
if err != nil {
done <- errors.Trace(err)
return
}
_, err = se.Execute(context.Background(), sql)
done <- errors.Trace(err)
}
// TestAddPrimaryKeyRollback1 is used to test scenarios that will roll back when a duplicate primary key is encountered.
func (s *testDBSuite8) TestAddPrimaryKeyRollback1(c *C) {
hasNullValsInKey := false
idxName := "PRIMARY"
addIdxSQL := "alter table t1 add primary key c3_index (c3);"
errMsg := "[kv:1062]Duplicate entry '" + strconv.Itoa(defaultBatchSize*2-10) + "' for key 'PRIMARY'"
testAddIndexRollback(c, s.store, s.lease, idxName, addIdxSQL, errMsg, hasNullValsInKey)
}
// TestAddPrimaryKeyRollback2 is used to test scenarios that will roll back when a null primary key is encountered.
func (s *testDBSuite8) TestAddPrimaryKeyRollback2(c *C) {
hasNullValsInKey := true
idxName := "PRIMARY"
addIdxSQL := "alter table t1 add primary key c3_index (c3);"
errMsg := "[ddl:1138]Invalid use of NULL value"
testAddIndexRollback(c, s.store, s.lease, idxName, addIdxSQL, errMsg, hasNullValsInKey)
}
func (s *testDBSuite2) TestAddUniqueIndexRollback(c *C) {
hasNullValsInKey := false
idxName := "c3_index"
addIdxSQL := "create unique index c3_index on t1 (c3)"
errMsg := "[kv:1062]Duplicate entry '" + strconv.Itoa(defaultBatchSize*2-10) + "' for key 'c3_index'"
testAddIndexRollback(c, s.store, s.lease, idxName, addIdxSQL, errMsg, hasNullValsInKey)
}
func (s *testSerialDBSuite) TestAddExpressionIndexRollback(c *C) {
config.UpdateGlobal(func(conf *config.Config) {
conf.Experimental.AllowsExpressionIndex = true
})
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test_db")
tk.MustExec("drop table if exists t1")
tk.MustExec("create table t1 (c1 int, c2 int, c3 int, unique key(c1))")
tk.MustExec("insert into t1 values (20, 20, 20), (40, 40, 40), (80, 80, 80), (160, 160, 160);")
var checkErr error
tk1 := testkit.NewTestKit(c, s.store)
_, checkErr = tk1.Exec("use test_db")
d := s.dom.DDL()
hook := &ddl.TestDDLCallback{Do: s.dom}
var currJob *model.Job
ctx := mock.NewContext()
ctx.Store = s.store
times := 0
hook.OnJobUpdatedExported = func(job *model.Job) {
if job.SchemaState == model.StateDeleteOnly {
if checkErr != nil {
return
}
_, checkErr = tk1.Exec("delete from t1 where c1 = 40;")
}
if checkErr == nil && job.SchemaState == model.StateWriteReorganization && times == 0 {
currJob = job
times++
}
}
d.(ddl.DDLForTest).SetHook(hook)
tk.MustGetErrMsg("alter table t1 add index expr_idx ((pow(c1, c2)));", "[ddl:8202]Cannot decode index value, because [types:1690]DOUBLE value is out of range in 'pow(160, 160)'")
c.Assert(checkErr, IsNil)
tk.MustQuery("select * from t1;").Check(testkit.Rows("20 20 20", "80 80 80", "160 160 160"))
// Check whether the reorg information is cleaned up.
err := ctx.NewTxn(context.Background())
c.Assert(err, IsNil)
txn, err := ctx.Txn(true)
c.Assert(err, IsNil)
m := meta.NewMeta(txn)
element, start, end, physicalID, err := m.GetDDLReorgHandle(currJob)
c.Assert(meta.ErrDDLReorgElementNotExist.Equal(err), IsTrue)
c.Assert(element, IsNil)
c.Assert(start, IsNil)
c.Assert(end, IsNil)
c.Assert(physicalID, Equals, int64(0))
}
func batchInsert(tk *testkit.TestKit, tbl string, start, end int) {
dml := fmt.Sprintf("insert into %s values", tbl)
for i := start; i < end; i++ {
dml += fmt.Sprintf("(%d, %d, %d)", i, i, i)
if i != end-1 {
dml += ","
}
}
tk.MustExec(dml)
}
func testAddIndexRollback(c *C, store kv.Storage, lease time.Duration, idxName, addIdxSQL, errMsg string, hasNullValsInKey bool) {
tk := testkit.NewTestKit(c, store)
tk.MustExec("use test_db")
tk.MustExec("drop table if exists t1")
tk.MustExec("create table t1 (c1 int, c2 int, c3 int, unique key(c1))")
// defaultBatchSize is equal to ddl.defaultBatchSize
base := defaultBatchSize * 2
count := base
// add some rows
batchInsert(tk, "t1", 0, count)
// add some null rows
if hasNullValsInKey {
for i := count - 10; i < count; i++ {
tk.MustExec("insert into t1 values (?, ?, null)", i+10, i)
}
} else {
// add some duplicate rows
for i := count - 10; i < count; i++ {
tk.MustExec("insert into t1 values (?, ?, ?)", i+10, i, i)
}
}
done := make(chan error, 1)
go backgroundExec(store, addIdxSQL, done)
times := 0
ticker := time.NewTicker(lease / 2)
defer ticker.Stop()
LOOP:
for {
select {
case err := <-done:
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, errMsg, Commentf("err:%v", err))
break LOOP
case <-ticker.C:
if times >= 10 {
break
}
step := 5
// delete some rows, and add some data
for i := count; i < count+step; i++ {
n := rand.Intn(count)
// Don't delete this row, otherwise error message would change.
if n == defaultBatchSize*2-10 {
continue
}
tk.MustExec("delete from t1 where c1 = ?", n)
tk.MustExec("insert into t1 values (?, ?, ?)", i+10, i, i)
}
count += step
times++
}
}
ctx := tk.Se.(sessionctx.Context)
t := testGetTableByName(c, ctx, "test_db", "t1")
for _, tidx := range t.Indices() {
c.Assert(strings.EqualFold(tidx.Meta().Name.L, idxName), IsFalse)
}
// delete duplicated/null rows, then add index
for i := base - 10; i < base; i++ {
tk.MustExec("delete from t1 where c1 = ?", i+10)
}
sessionExec(c, store, addIdxSQL)
tk.MustExec("drop table t1")
}
func (s *testDBSuite8) TestCancelAddPrimaryKey(c *C) {
idxName := "primary"
addIdxSQL := "alter table t1 add primary key idx_c2 (c2);"
testCancelAddIndex(c, s.store, s.dom.DDL(), s.lease, idxName, addIdxSQL, "", s.dom)
// Check the column's flag when the "add primary key" failed.
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test_db")
ctx := tk.Se.(sessionctx.Context)
c.Assert(ctx.NewTxn(context.Background()), IsNil)
t := testGetTableByName(c, ctx, "test_db", "t1")
col1Flag := t.Cols()[1].Flag
c.Assert(!mysql.HasNotNullFlag(col1Flag) && !mysql.HasPreventNullInsertFlag(col1Flag) && mysql.HasUnsignedFlag(col1Flag), IsTrue)
tk.MustExec("drop table t1")
}
func (s *testDBSuite7) TestCancelAddIndex(c *C) {
idxName := "c3_index "
addIdxSQL := "create unique index c3_index on t1 (c3)"
testCancelAddIndex(c, s.store, s.dom.DDL(), s.lease, idxName, addIdxSQL, "", s.dom)
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test_db")
tk.MustExec("drop table t1")
}
func testCancelAddIndex(c *C, store kv.Storage, d ddl.DDL, lease time.Duration, idxName, addIdxSQL, sqlModeSQL string, dom *domain.Domain) {
tk := testkit.NewTestKit(c, store)
tk.MustExec("use test_db")
tk.MustExec("drop table if exists t1")
tk.MustExec("create table t1 (c1 int, c2 int unsigned, c3 int, unique key(c1))")
// defaultBatchSize is equal to ddl.defaultBatchSize
count := defaultBatchSize * 32
start := 0
// add some rows
if len(sqlModeSQL) != 0 {
// Insert some null values.
tk.MustExec(sqlModeSQL)
tk.MustExec("insert into t1 set c1 = ?", 0)
tk.MustExec("insert into t1 set c2 = ?", 1)
tk.MustExec("insert into t1 set c3 = ?", 2)
start = 3
}
for i := start; i < count; i += defaultBatchSize {
batchInsert(tk, "t1", i, i+defaultBatchSize)
}
var c3IdxInfo *model.IndexInfo
hook := &ddl.TestDDLCallback{Do: dom}
originBatchSize := tk.MustQuery("select @@global.tidb_ddl_reorg_batch_size")
// Set batch size to lower try to slow down add-index reorganization, This if for hook to cancel this ddl job.
tk.MustExec("set @@global.tidb_ddl_reorg_batch_size = 32")
defer tk.MustExec(fmt.Sprintf("set @@global.tidb_ddl_reorg_batch_size = %v", originBatchSize.Rows()[0][0]))
// let hook.OnJobUpdatedExported has chance to cancel the job.
// the hook.OnJobUpdatedExported is called when the job is updated, runReorgJob will wait ddl.ReorgWaitTimeout, then return the ddl.runDDLJob.
// After that ddl call d.hook.OnJobUpdated(job), so that we can canceled the job in this test case.
var checkErr error
ctx := tk.Se.(sessionctx.Context)
hook.OnJobUpdatedExported, c3IdxInfo, checkErr = backgroundExecOnJobUpdatedExported(c, store, ctx, hook, idxName)
originalHook := d.GetHook()
d.(ddl.DDLForTest).SetHook(hook)
done := make(chan error, 1)
go backgroundExec(store, addIdxSQL, done)
times := 0
ticker := time.NewTicker(lease / 2)
defer ticker.Stop()
LOOP:
for {
select {
case err := <-done:
c.Assert(checkErr, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, "[ddl:8214]Cancelled DDL job")
break LOOP
case <-ticker.C:
if times >= 10 {
break
}
step := 5
// delete some rows, and add some data
for i := count; i < count+step; i++ {
n := rand.Intn(count)
tk.MustExec("delete from t1 where c1 = ?", n)
tk.MustExec("insert into t1 values (?, ?, ?)", i+10, i, i)
}
count += step
times++
}
}
t := testGetTableByName(c, ctx, "test_db", "t1")
for _, tidx := range t.Indices() {
c.Assert(strings.EqualFold(tidx.Meta().Name.L, idxName), IsFalse)
}
idx := tables.NewIndex(t.Meta().ID, t.Meta(), c3IdxInfo)
checkDelRangeDone(c, ctx, idx)
d.(ddl.DDLForTest).SetHook(originalHook)
}
// TestCancelAddIndex1 tests canceling ddl job when the add index worker is not started.
func (s *testDBSuite4) TestCancelAddIndex1(c *C) {
tk := testkit.NewTestKit(c, s.store)
s.mustExec(tk, c, "use test_db")
s.mustExec(tk, c, "drop table if exists t")
s.mustExec(tk, c, "create table t(c1 int, c2 int)")
defer s.mustExec(tk, c, "drop table t;")
for i := 0; i < 50; i++ {
s.mustExec(tk, c, "insert into t values (?, ?)", i, i)
}
var checkErr error
hook := &ddl.TestDDLCallback{Do: s.dom}
hook.OnJobRunBeforeExported = func(job *model.Job) {
if job.Type == model.ActionAddIndex && job.State == model.JobStateRunning && job.SchemaState == model.StateWriteReorganization && job.SnapshotVer == 0 {
jobIDs := []int64{job.ID}
hookCtx := mock.NewContext()
hookCtx.Store = s.store
err := hookCtx.NewTxn(context.Background())
if err != nil {
checkErr = errors.Trace(err)
return
}
txn, err := hookCtx.Txn(true)
if err != nil {
checkErr = errors.Trace(err)
return
}
errs, err := admin.CancelJobs(txn, jobIDs)
if err != nil {
checkErr = errors.Trace(err)
return
}
if errs[0] != nil {
checkErr = errors.Trace(errs[0])
return
}
checkErr = txn.Commit(context.Background())
}
}
originalHook := s.dom.DDL().GetHook()
s.dom.DDL().(ddl.DDLForTest).SetHook(hook)
rs, err := tk.Exec("alter table t add index idx_c2(c2)")
if rs != nil {
rs.Close()
}
c.Assert(checkErr, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, "[ddl:8214]Cancelled DDL job")
s.dom.DDL().(ddl.DDLForTest).SetHook(originalHook)
t := s.testGetTable(c, "t")
for _, idx := range t.Indices() {
c.Assert(strings.EqualFold(idx.Meta().Name.L, "idx_c2"), IsFalse)
}
s.mustExec(tk, c, "alter table t add index idx_c2(c2)")
s.mustExec(tk, c, "alter table t drop index idx_c2")
}
// TestCancelDropIndex tests cancel ddl job which type is drop primary key.
func (s *testDBSuite4) TestCancelDropPrimaryKey(c *C) {
idxName := "primary"
addIdxSQL := "alter table t add primary key idx_c2 (c2);"
dropIdxSQL := "alter table t drop primary key;"
testCancelDropIndex(c, s.store, s.dom.DDL(), idxName, addIdxSQL, dropIdxSQL, s.dom)
}
// TestCancelDropIndex tests cancel ddl job which type is drop index.
func (s *testDBSuite5) TestCancelDropIndex(c *C) {
idxName := "idx_c2"
addIdxSQL := "alter table t add index idx_c2 (c2);"
dropIdxSQL := "alter table t drop index idx_c2;"
testCancelDropIndex(c, s.store, s.dom.DDL(), idxName, addIdxSQL, dropIdxSQL, s.dom)
}
// testCancelDropIndex tests cancel ddl job which type is drop index.
func testCancelDropIndex(c *C, store kv.Storage, d ddl.DDL, idxName, addIdxSQL, dropIdxSQL string, dom *domain.Domain) {
tk := testkit.NewTestKit(c, store)
tk.MustExec("use test_db")
tk.MustExec("drop table if exists t")
tk.MustExec("create table t(c1 int, c2 int)")
defer tk.MustExec("drop table t;")
for i := 0; i < 5; i++ {
tk.MustExec("insert into t values (?, ?)", i, i)
}
testCases := []struct {
needAddIndex bool
jobState model.JobState
JobSchemaState model.SchemaState
cancelSucc bool
}{
// model.JobStateNone means the jobs is canceled before the first run.
// if we cancel successfully, we need to set needAddIndex to false in the next test case. Otherwise, set needAddIndex to true.
{true, model.JobStateNone, model.StateNone, true},
{false, model.JobStateRunning, model.StateWriteOnly, false},
{true, model.JobStateRunning, model.StateDeleteOnly, false},
{true, model.JobStateRunning, model.StateDeleteReorganization, false},
}
var checkErr error
hook := &ddl.TestDDLCallback{Do: dom}
var jobID int64
testCase := &testCases[0]
hook.OnJobRunBeforeExported = func(job *model.Job) {
if (job.Type == model.ActionDropIndex || job.Type == model.ActionDropPrimaryKey) &&
job.State == testCase.jobState && job.SchemaState == testCase.JobSchemaState {
jobID = job.ID
jobIDs := []int64{job.ID}
hookCtx := mock.NewContext()
hookCtx.Store = store
err := hookCtx.NewTxn(context.TODO())
if err != nil {
checkErr = errors.Trace(err)
return
}
txn, err := hookCtx.Txn(true)
if err != nil {
checkErr = errors.Trace(err)
return
}
errs, err := admin.CancelJobs(txn, jobIDs)
if err != nil {
checkErr = errors.Trace(err)
return
}
if errs[0] != nil {
checkErr = errors.Trace(errs[0])
return
}
checkErr = txn.Commit(context.Background())
}
}
originalHook := d.GetHook()
d.(ddl.DDLForTest).SetHook(hook)
ctx := tk.Se.(sessionctx.Context)
for i := range testCases {
testCase = &testCases[i]
if testCase.needAddIndex {
tk.MustExec(addIdxSQL)
}
rs, err := tk.Exec(dropIdxSQL)
if rs != nil {
rs.Close()
}
t := testGetTableByName(c, ctx, "test_db", "t")
indexInfo := t.Meta().FindIndexByName(idxName)
if testCase.cancelSucc {
c.Assert(checkErr, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, "[ddl:8214]Cancelled DDL job")
c.Assert(indexInfo, NotNil)
c.Assert(indexInfo.State, Equals, model.StatePublic)
} else {
err1 := admin.ErrCannotCancelDDLJob.GenWithStackByArgs(jobID)
c.Assert(err, IsNil)
c.Assert(checkErr, NotNil)
c.Assert(checkErr.Error(), Equals, err1.Error())
c.Assert(indexInfo, IsNil)
}
}
d.(ddl.DDLForTest).SetHook(originalHook)
tk.MustExec(addIdxSQL)
tk.MustExec(dropIdxSQL)
}
// TestCancelTruncateTable tests cancel ddl job which type is truncate table.
func (s *testDBSuite5) TestCancelTruncateTable(c *C) {
tk := testkit.NewTestKit(c, s.store)
s.mustExec(tk, c, "use test_db")
s.mustExec(tk, c, "create database if not exists test_truncate_table")
s.mustExec(tk, c, "drop table if exists t")
s.mustExec(tk, c, "create table t(c1 int, c2 int)")
defer s.mustExec(tk, c, "drop table t;")
var checkErr error
hook := &ddl.TestDDLCallback{Do: s.dom}
hook.OnJobRunBeforeExported = func(job *model.Job) {
if job.Type == model.ActionTruncateTable && job.State == model.JobStateNone {
jobIDs := []int64{job.ID}
hookCtx := mock.NewContext()
hookCtx.Store = s.store
err := hookCtx.NewTxn(context.Background())
if err != nil {
checkErr = errors.Trace(err)
return
}
txn, err := hookCtx.Txn(true)
if err != nil {
checkErr = errors.Trace(err)
return
}
errs, err := admin.CancelJobs(txn, jobIDs)
if err != nil {
checkErr = errors.Trace(err)
return
}
if errs[0] != nil {
checkErr = errors.Trace(errs[0])
return
}
checkErr = txn.Commit(context.Background())
}
}
originalHook := s.dom.DDL().GetHook()
s.dom.DDL().(ddl.DDLForTest).SetHook(hook)
_, err := tk.Exec("truncate table t")
c.Assert(checkErr, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, "[ddl:8214]Cancelled DDL job")
s.dom.DDL().(ddl.DDLForTest).SetHook(originalHook)
}
func (s *testDBSuite5) TestParallelDropSchemaAndDropTable(c *C) {
tk := testkit.NewTestKit(c, s.store)
s.mustExec(tk, c, "create database if not exists test_drop_schema_table")
s.mustExec(tk, c, "use test_drop_schema_table")
s.mustExec(tk, c, "create table t(c1 int, c2 int)")
var checkErr error
hook := &ddl.TestDDLCallback{Do: s.dom}
dbInfo := testGetSchemaByName(c, tk.Se, "test_drop_schema_table")
done := false
var wg sync.WaitGroup
tk2 := testkit.NewTestKit(c, s.store)
tk2.MustExec("use test_drop_schema_table")
hook.OnJobUpdatedExported = func(job *model.Job) {
if job.Type == model.ActionDropSchema && job.State == model.JobStateRunning &&
job.SchemaState == model.StateWriteOnly && job.SchemaID == dbInfo.ID && done == false {
wg.Add(1)
done = true
go func() {
_, checkErr = tk2.Exec("drop table t")
wg.Done()
}()
time.Sleep(5 * time.Millisecond)
}
}
originalHook := s.dom.DDL().GetHook()
s.dom.DDL().(ddl.DDLForTest).SetHook(hook)
s.mustExec(tk, c, "drop database test_drop_schema_table")
s.dom.DDL().(ddl.DDLForTest).SetHook(originalHook)
wg.Wait()
c.Assert(done, IsTrue)
c.Assert(checkErr, NotNil)
// There are two possible assert result because:
// 1: If drop-database is finished before drop-table being put into the ddl job queue, it will return "unknown table" error directly in the previous check.
// 2: If drop-table has passed the previous check and been put into the ddl job queue, then drop-database finished, it will return schema change error.
assertRes := checkErr.Error() == "[domain:8028]Information schema is changed during the execution of the"+
" statement(for example, table definition may be updated by other DDL ran in parallel). "+
"If you see this error often, try increasing `tidb_max_delta_schema_count`. [try again later]" ||
checkErr.Error() == "[schema:1051]Unknown table 'test_drop_schema_table.t'"
c.Assert(assertRes, Equals, true)
// Below behaviour is use to mock query `curl "http://$IP:10080/tiflash/replica"`
fn := func(jobs []*model.Job) (bool, error) {
return executor.GetDropOrTruncateTableInfoFromJobs(jobs, 0, s.dom, func(job *model.Job, info *model.TableInfo) (bool, error) {
return false, nil
})
}
err := tk.Se.NewTxn(context.Background())
c.Assert(err, IsNil)
txn, err := tk.Se.Txn(true)
c.Assert(err, IsNil)
err = admin.IterHistoryDDLJobs(txn, fn)
c.Assert(err, IsNil)
}
// TestCancelRenameIndex tests cancel ddl job which type is rename index.
func (s *testDBSuite1) TestCancelRenameIndex(c *C) {
tk := testkit.NewTestKit(c, s.store)
s.mustExec(tk, c, "use test_db")
s.mustExec(tk, c, "create database if not exists test_rename_index")
s.mustExec(tk, c, "drop table if exists t")
s.mustExec(tk, c, "create table t(c1 int, c2 int)")
defer s.mustExec(tk, c, "drop table t;")
for i := 0; i < 100; i++ {
s.mustExec(tk, c, "insert into t values (?, ?)", i, i)
}
s.mustExec(tk, c, "alter table t add index idx_c2(c2)")
var checkErr error
hook := &ddl.TestDDLCallback{Do: s.dom}
hook.OnJobRunBeforeExported = func(job *model.Job) {
if job.Type == model.ActionRenameIndex && job.State == model.JobStateNone {
jobIDs := []int64{job.ID}
hookCtx := mock.NewContext()
hookCtx.Store = s.store
err := hookCtx.NewTxn(context.Background())
if err != nil {
checkErr = errors.Trace(err)
return
}
txn, err := hookCtx.Txn(true)
if err != nil {
checkErr = errors.Trace(err)
return
}
errs, err := admin.CancelJobs(txn, jobIDs)
if err != nil {
checkErr = errors.Trace(err)
return
}
if errs[0] != nil {
checkErr = errors.Trace(errs[0])
return
}
checkErr = txn.Commit(context.Background())
}
}
originalHook := s.dom.DDL().GetHook()
s.dom.DDL().(ddl.DDLForTest).SetHook(hook)
rs, err := tk.Exec("alter table t rename index idx_c2 to idx_c3")
if rs != nil {
rs.Close()
}
c.Assert(checkErr, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, "[ddl:8214]Cancelled DDL job")
s.dom.DDL().(ddl.DDLForTest).SetHook(originalHook)
t := s.testGetTable(c, "t")
for _, idx := range t.Indices() {
c.Assert(strings.EqualFold(idx.Meta().Name.L, "idx_c3"), IsFalse)
}
s.mustExec(tk, c, "alter table t rename index idx_c2 to idx_c3")
}
// TestCancelDropTable tests cancel ddl job which type is drop table.
func (s *testDBSuite2) TestCancelDropTableAndSchema(c *C) {
tk := testkit.NewTestKit(c, s.store)
testCases := []struct {
needAddTableOrDB bool
action model.ActionType
jobState model.JobState
JobSchemaState model.SchemaState
cancelSucc bool
}{
// Check drop table.
// model.JobStateNone means the jobs is canceled before the first run.
{true, model.ActionDropTable, model.JobStateNone, model.StateNone, true},
{false, model.ActionDropTable, model.JobStateRunning, model.StateWriteOnly, false},
{true, model.ActionDropTable, model.JobStateRunning, model.StateDeleteOnly, false},
// Check drop database.
{true, model.ActionDropSchema, model.JobStateNone, model.StateNone, true},
{false, model.ActionDropSchema, model.JobStateRunning, model.StateWriteOnly, false},
{true, model.ActionDropSchema, model.JobStateRunning, model.StateDeleteOnly, false},
}
var checkErr error
hook := &ddl.TestDDLCallback{Do: s.dom}
var jobID int64
testCase := &testCases[0]
s.mustExec(tk, c, "create database if not exists test_drop_db")
dbInfo := s.testGetDB(c, "test_drop_db")
hook.OnJobRunBeforeExported = func(job *model.Job) {
if job.Type == testCase.action && job.State == testCase.jobState && job.SchemaState == testCase.JobSchemaState && job.SchemaID == dbInfo.ID {
jobIDs := []int64{job.ID}
jobID = job.ID
hookCtx := mock.NewContext()
hookCtx.Store = s.store
err := hookCtx.NewTxn(context.TODO())
if err != nil {
checkErr = errors.Trace(err)
return
}
txn, err := hookCtx.Txn(true)
if err != nil {
checkErr = errors.Trace(err)
return
}
errs, err := admin.CancelJobs(txn, jobIDs)
if err != nil {
checkErr = errors.Trace(err)
return
}
if errs[0] != nil {
checkErr = errors.Trace(errs[0])
return
}
checkErr = txn.Commit(context.Background())
}
}
originHook := s.dom.DDL().GetHook()
defer s.dom.DDL().(ddl.DDLForTest).SetHook(originHook)
s.dom.DDL().(ddl.DDLForTest).SetHook(hook)
var err error
sql := ""
for i := range testCases {
testCase = &testCases[i]
if testCase.needAddTableOrDB {
s.mustExec(tk, c, "create database if not exists test_drop_db")
s.mustExec(tk, c, "use test_drop_db")
s.mustExec(tk, c, "create table if not exists t(c1 int, c2 int)")
}
dbInfo = s.testGetDB(c, "test_drop_db")
if testCase.action == model.ActionDropTable {
sql = "drop table t;"
} else if testCase.action == model.ActionDropSchema {
sql = "drop database test_drop_db;"
}
_, err = tk.Exec(sql)
if testCase.cancelSucc {
c.Assert(checkErr, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, "[ddl:8214]Cancelled DDL job")
s.mustExec(tk, c, "insert into t values (?, ?)", i, i)
} else {
c.Assert(err, IsNil)
c.Assert(checkErr, NotNil)
c.Assert(checkErr.Error(), Equals, admin.ErrCannotCancelDDLJob.GenWithStackByArgs(jobID).Error())
_, err = tk.Exec("insert into t values (?, ?)", i, i)
c.Assert(err, NotNil)
}
}
}
func (s *testDBSuite3) TestAddAnonymousIndex(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use " + s.schemaName)
s.mustExec(tk, c, "create table t_anonymous_index (c1 int, c2 int, C3 int)")
s.mustExec(tk, c, "alter table t_anonymous_index add index (c1, c2)")
// for dropping empty index
_, err := tk.Exec("alter table t_anonymous_index drop index")
c.Assert(err, NotNil)
// The index name is c1 when adding index (c1, c2).
s.mustExec(tk, c, "alter table t_anonymous_index drop index c1")
t := s.testGetTable(c, "t_anonymous_index")
c.Assert(t.Indices(), HasLen, 0)
// for adding some indices that the first column name is c1
s.mustExec(tk, c, "alter table t_anonymous_index add index (c1)")
_, err = tk.Exec("alter table t_anonymous_index add index c1 (c2)")
c.Assert(err, NotNil)
t = s.testGetTable(c, "t_anonymous_index")
c.Assert(t.Indices(), HasLen, 1)
idx := t.Indices()[0].Meta().Name.L
c.Assert(idx, Equals, "c1")
// The MySQL will be a warning.
s.mustExec(tk, c, "alter table t_anonymous_index add index c1_3 (c1)")
s.mustExec(tk, c, "alter table t_anonymous_index add index (c1, c2, C3)")
// The MySQL will be a warning.
s.mustExec(tk, c, "alter table t_anonymous_index add index (c1)")
t = s.testGetTable(c, "t_anonymous_index")
c.Assert(t.Indices(), HasLen, 4)
s.mustExec(tk, c, "alter table t_anonymous_index drop index c1")
s.mustExec(tk, c, "alter table t_anonymous_index drop index c1_2")