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cluster_test.go
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// Copyright 2022 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ddl_test
import (
"context"
"fmt"
"testing"
"time"
"github.com/pingcap/failpoint"
"github.com/pingcap/tidb/ddl"
"github.com/pingcap/tidb/ddl/internal/callback"
"github.com/pingcap/tidb/domain/infosync"
"github.com/pingcap/tidb/errno"
"github.com/pingcap/tidb/meta"
"github.com/pingcap/tidb/parser/model"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/tablecodec"
"github.com/pingcap/tidb/testkit"
"github.com/pingcap/tidb/util/dbterror"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tikv/client-go/v2/oracle"
)
func TestGetTableDataKeyRanges(t *testing.T) {
// case 1, empty flashbackIDs
keyRanges := ddl.GetTableDataKeyRanges([]int64{})
require.Len(t, keyRanges, 1)
require.Equal(t, keyRanges[0].StartKey, tablecodec.EncodeTablePrefix(0))
require.Equal(t, keyRanges[0].EndKey, tablecodec.EncodeTablePrefix(meta.MaxGlobalID))
// case 2, insert a execluded table ID
keyRanges = ddl.GetTableDataKeyRanges([]int64{3})
require.Len(t, keyRanges, 2)
require.Equal(t, keyRanges[0].StartKey, tablecodec.EncodeTablePrefix(0))
require.Equal(t, keyRanges[0].EndKey, tablecodec.EncodeTablePrefix(3))
require.Equal(t, keyRanges[1].StartKey, tablecodec.EncodeTablePrefix(4))
require.Equal(t, keyRanges[1].EndKey, tablecodec.EncodeTablePrefix(meta.MaxGlobalID))
// case 3, insert some execluded table ID
keyRanges = ddl.GetTableDataKeyRanges([]int64{3, 5, 9})
require.Len(t, keyRanges, 4)
require.Equal(t, keyRanges[0].StartKey, tablecodec.EncodeTablePrefix(0))
require.Equal(t, keyRanges[0].EndKey, tablecodec.EncodeTablePrefix(3))
require.Equal(t, keyRanges[1].StartKey, tablecodec.EncodeTablePrefix(4))
require.Equal(t, keyRanges[1].EndKey, tablecodec.EncodeTablePrefix(5))
require.Equal(t, keyRanges[2].StartKey, tablecodec.EncodeTablePrefix(6))
require.Equal(t, keyRanges[2].EndKey, tablecodec.EncodeTablePrefix(9))
require.Equal(t, keyRanges[3].StartKey, tablecodec.EncodeTablePrefix(10))
require.Equal(t, keyRanges[3].EndKey, tablecodec.EncodeTablePrefix(meta.MaxGlobalID))
}
func TestFlashbackCloseAndResetPDSchedule(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
originHook := dom.DDL().GetHook()
tk := testkit.NewTestKit(t, store)
injectSafeTS := oracle.GoTimeToTS(time.Now().Add(10 * time.Second))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/ddl/mockFlashbackTest", `return(true)`))
require.NoError(t, failpoint.Enable("tikvclient/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/expression/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
oldValue := map[string]interface{}{
"merge-schedule-limit": 1,
}
require.NoError(t, infosync.SetPDScheduleConfig(context.Background(), oldValue))
timeBeforeDrop, _, safePointSQL, resetGC := MockGC(tk)
defer resetGC()
tk.MustExec(fmt.Sprintf(safePointSQL, timeBeforeDrop))
hook := &callback.TestDDLCallback{Do: dom}
hook.OnJobRunBeforeExported = func(job *model.Job) {
assert.Equal(t, model.ActionFlashbackCluster, job.Type)
if job.SchemaState == model.StateWriteReorganization {
closeValue, err := infosync.GetPDScheduleConfig(context.Background())
assert.NoError(t, err)
assert.Equal(t, closeValue["merge-schedule-limit"], 0)
// cancel flashback job
job.State = model.JobStateCancelled
job.Error = dbterror.ErrCancelledDDLJob
}
}
dom.DDL().SetHook(hook)
time.Sleep(10 * time.Millisecond)
ts, err := tk.Session().GetStore().GetOracle().GetTimestamp(context.Background(), &oracle.Option{})
require.NoError(t, err)
tk.MustGetErrCode(fmt.Sprintf("flashback cluster to timestamp '%s'", oracle.GetTimeFromTS(ts)), errno.ErrCancelledDDLJob)
dom.DDL().SetHook(originHook)
finishValue, err := infosync.GetPDScheduleConfig(context.Background())
require.NoError(t, err)
require.EqualValues(t, finishValue["merge-schedule-limit"], 1)
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/ddl/mockFlashbackTest"))
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/expression/injectSafeTS"))
require.NoError(t, failpoint.Disable("tikvclient/injectSafeTS"))
}
func TestAddDDLDuringFlashback(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
originHook := dom.DDL().GetHook()
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t(a int)")
time.Sleep(10 * time.Millisecond)
ts, err := tk.Session().GetStore().GetOracle().GetTimestamp(context.Background(), &oracle.Option{})
require.NoError(t, err)
injectSafeTS := oracle.GoTimeToTS(oracle.GetTimeFromTS(ts).Add(10 * time.Second))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/ddl/mockFlashbackTest", `return(true)`))
require.NoError(t, failpoint.Enable("tikvclient/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/expression/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
timeBeforeDrop, _, safePointSQL, resetGC := MockGC(tk)
defer resetGC()
tk.MustExec(fmt.Sprintf(safePointSQL, timeBeforeDrop))
hook := &callback.TestDDLCallback{Do: dom}
hook.OnJobRunBeforeExported = func(job *model.Job) {
assert.Equal(t, model.ActionFlashbackCluster, job.Type)
if job.SchemaState == model.StateWriteOnly {
_, err := tk.Exec("alter table t add column b int")
assert.ErrorContains(t, err, "Can't add ddl job, have flashback cluster job")
}
}
dom.DDL().SetHook(hook)
tk.MustExec(fmt.Sprintf("flashback cluster to timestamp '%s'", oracle.GetTimeFromTS(ts)))
dom.DDL().SetHook(originHook)
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/ddl/mockFlashbackTest"))
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/expression/injectSafeTS"))
require.NoError(t, failpoint.Disable("tikvclient/injectSafeTS"))
}
func TestGlobalVariablesOnFlashback(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
originHook := dom.DDL().GetHook()
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("create table t(a int)")
time.Sleep(10 * time.Millisecond)
ts, err := tk.Session().GetStore().GetOracle().GetTimestamp(context.Background(), &oracle.Option{})
require.NoError(t, err)
injectSafeTS := oracle.GoTimeToTS(oracle.GetTimeFromTS(ts).Add(10 * time.Second))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/ddl/mockFlashbackTest", `return(true)`))
require.NoError(t, failpoint.Enable("tikvclient/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/expression/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
timeBeforeDrop, _, safePointSQL, resetGC := MockGC(tk)
defer resetGC()
tk.MustExec(fmt.Sprintf(safePointSQL, timeBeforeDrop))
hook := &callback.TestDDLCallback{Do: dom}
hook.OnJobRunBeforeExported = func(job *model.Job) {
assert.Equal(t, model.ActionFlashbackCluster, job.Type)
if job.SchemaState == model.StateWriteReorganization {
rs, err := tk.Exec("show variables like 'tidb_gc_enable'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
rs, err = tk.Exec("show variables like 'tidb_enable_auto_analyze'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
rs, err = tk.Exec("show variables like 'tidb_super_read_only'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.On)
rs, err = tk.Exec("show variables like 'tidb_ttl_job_enable'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
}
}
dom.DDL().SetHook(hook)
// first try with `tidb_gc_enable` = on and `tidb_super_read_only` = off and `tidb_ttl_job_enable` = on
tk.MustExec("set global tidb_gc_enable = on")
tk.MustExec("set global tidb_super_read_only = off")
tk.MustExec("set global tidb_ttl_job_enable = on")
tk.MustExec(fmt.Sprintf("flashback cluster to timestamp '%s'", oracle.GetTimeFromTS(ts)))
rs, err := tk.Exec("show variables like 'tidb_super_read_only'")
require.NoError(t, err)
require.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
rs, err = tk.Exec("show variables like 'tidb_gc_enable'")
require.NoError(t, err)
require.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.On)
rs, err = tk.Exec("show variables like 'tidb_ttl_job_enable'")
require.NoError(t, err)
require.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
// second try with `tidb_gc_enable` = off and `tidb_super_read_only` = on and `tidb_ttl_job_enable` = off
tk.MustExec("set global tidb_gc_enable = off")
tk.MustExec("set global tidb_super_read_only = on")
tk.MustExec("set global tidb_ttl_job_enable = off")
ts, err = tk.Session().GetStore().GetOracle().GetTimestamp(context.Background(), &oracle.Option{})
require.NoError(t, err)
tk.MustExec(fmt.Sprintf("flashback cluster to timestamp '%s'", oracle.GetTimeFromTS(ts)))
rs, err = tk.Exec("show variables like 'tidb_super_read_only'")
require.NoError(t, err)
require.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.On)
rs, err = tk.Exec("show variables like 'tidb_gc_enable'")
require.NoError(t, err)
require.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
rs, err = tk.Exec("show variables like 'tidb_ttl_job_enable'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
dom.DDL().SetHook(originHook)
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/ddl/mockFlashbackTest"))
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/expression/injectSafeTS"))
require.NoError(t, failpoint.Disable("tikvclient/injectSafeTS"))
}
func TestCancelFlashbackCluster(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
originHook := dom.DDL().GetHook()
tk := testkit.NewTestKit(t, store)
time.Sleep(10 * time.Millisecond)
ts, err := tk.Session().GetStore().GetOracle().GetTimestamp(context.Background(), &oracle.Option{})
require.NoError(t, err)
injectSafeTS := oracle.GoTimeToTS(oracle.GetTimeFromTS(ts).Add(10 * time.Second))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/ddl/mockFlashbackTest", `return(true)`))
require.NoError(t, failpoint.Enable("tikvclient/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/expression/injectSafeTS",
fmt.Sprintf("return(%v)", injectSafeTS)))
timeBeforeDrop, _, safePointSQL, resetGC := MockGC(tk)
defer resetGC()
tk.MustExec(fmt.Sprintf(safePointSQL, timeBeforeDrop))
// Try canceled on StateDeleteOnly, cancel success
hook := newCancelJobHook(t, store, dom, func(job *model.Job) bool {
return job.SchemaState == model.StateDeleteOnly
})
dom.DDL().SetHook(hook)
tk.MustExec("set global tidb_ttl_job_enable = on")
tk.MustGetErrCode(fmt.Sprintf("flashback cluster to timestamp '%s'", oracle.GetTimeFromTS(ts)), errno.ErrCancelledDDLJob)
hook.MustCancelDone(t)
rs, err := tk.Exec("show variables like 'tidb_ttl_job_enable'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.On)
// Try canceled on StateWriteReorganization, cancel failed
hook = newCancelJobHook(t, store, dom, func(job *model.Job) bool {
return job.SchemaState == model.StateWriteReorganization
})
dom.DDL().SetHook(hook)
tk.MustExec(fmt.Sprintf("flashback cluster to timestamp '%s'", oracle.GetTimeFromTS(ts)))
hook.MustCancelFailed(t)
rs, err = tk.Exec("show variables like 'tidb_ttl_job_enable'")
assert.NoError(t, err)
assert.Equal(t, tk.ResultSetToResult(rs, "").Rows()[0][1], variable.Off)
dom.DDL().SetHook(originHook)
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/ddl/mockFlashbackTest"))
require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/expression/injectSafeTS"))
require.NoError(t, failpoint.Disable("tikvclient/injectSafeTS"))
}