486 lines
18 KiB
Go
486 lines
18 KiB
Go
// Copyright 2023 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package variable
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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"testing"
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"github.com/pingcap/failpoint"
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"github.com/pingcap/tidb/pkg/kv"
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"github.com/pingcap/tidb/pkg/session"
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"github.com/pingcap/tidb/pkg/sessionctx/vardef"
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"github.com/pingcap/tidb/pkg/sessionctx/variable"
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"github.com/pingcap/tidb/pkg/store/copr"
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"github.com/pingcap/tidb/pkg/testkit"
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"github.com/pingcap/tidb/pkg/util/dbterror/exeerrors"
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"github.com/pingcap/tidb/pkg/util/logutil"
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"github.com/pingcap/tidb/pkg/util/memory"
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"github.com/stretchr/testify/require"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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)
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func TestForbidSettingBothTSVariable(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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// For mock tikv, safe point is not initialized, we manually insert it for snapshot to use.
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safePointName := "tikv_gc_safe_point"
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safePointValue := "20060102-15:04:05 -0700"
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safePointComment := "All versions after safe point can be accessed. (DO NOT EDIT)"
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updateSafePoint := fmt.Sprintf(`INSERT INTO mysql.tidb VALUES ('%[1]s', '%[2]s', '%[3]s')
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ON DUPLICATE KEY
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UPDATE variable_value = '%[2]s', comment = '%[3]s'`, safePointName, safePointValue, safePointComment)
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tk.MustExec(updateSafePoint)
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// Set tidb_snapshot and assert tidb_read_staleness
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tk.MustExec("set @@tidb_snapshot = '2007-01-01 15:04:05.999999'")
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tk.MustGetErrMsg("set @@tidb_read_staleness='-5'", "tidb_snapshot should be clear before setting tidb_read_staleness")
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tk.MustExec("set @@tidb_snapshot = ''")
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tk.MustExec("set @@tidb_read_staleness='-5'")
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// Set tidb_read_staleness and assert tidb_snapshot
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tk.MustExec("set @@tidb_read_staleness='-5'")
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tk.MustGetErrMsg("set @@tidb_snapshot = '2007-01-01 15:04:05.999999'", "tidb_read_staleness should be clear before setting tidb_snapshot")
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tk.MustExec("set @@tidb_read_staleness = ''")
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tk.MustExec("set @@tidb_snapshot = '2007-01-01 15:04:05.999999'")
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}
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func TestCoprocessorOOMAction(t *testing.T) {
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// Assert Coprocessor OOMAction
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("set @@tidb_enable_rate_limit_action=true")
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tk.MustExec("create database testoom")
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tk.MustExec("use testoom")
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tk.MustExec(`set @@tidb_wait_split_region_finish=1`)
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// create table for non keep-order case
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tk.MustExec("drop table if exists t5")
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tk.MustExec("create table t5(id int)")
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tk.MustQuery(`split table t5 between (0) and (10000) regions 10`).Check(testkit.Rows("9 1"))
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// create table for keep-order case
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tk.MustExec("drop table if exists t6")
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tk.MustExec("create table t6(id int, index(id))")
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tk.MustQuery(`split table t6 between (0) and (10000) regions 10`).Check(testkit.Rows("10 1"))
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tk.MustQuery("split table t6 INDEX id between (0) and (10000) regions 10;").Check(testkit.Rows("10 1"))
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count := 10
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for i := range count {
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tk.MustExec(fmt.Sprintf("insert into t5 (id) values (%v)", i))
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tk.MustExec(fmt.Sprintf("insert into t6 (id) values (%v)", i))
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}
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testcases := []struct {
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name string
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sql string
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}{
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{
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name: "keep Order",
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sql: "select id from t6 order by id",
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},
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{
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name: "non keep Order",
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sql: "select id from t5",
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},
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}
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/distsql/testRateLimitActionMockConsumeAndAssert", `return(true)`))
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defer func() {
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/distsql/testRateLimitActionMockConsumeAndAssert"))
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}()
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/store/copr/testRateLimitActionMockConsumeAndAssert", `return(true)`))
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defer func() {
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/store/copr/testRateLimitActionMockConsumeAndAssert"))
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}()
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enableOOM := func(tk *testkit.TestKit, name, sql string) {
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t.Logf("enable OOM, testcase: %v", name)
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// larger than 4 copResponse, smaller than 5 copResponse
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quota := 5*copr.MockResponseSizeForTest - 100
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defer tk.MustExec("SET GLOBAL tidb_mem_oom_action = DEFAULT")
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tk.MustExec("SET GLOBAL tidb_mem_oom_action='CANCEL'")
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tk.MustExec("use testoom")
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tk.MustExec("set @@tidb_enable_rate_limit_action=1")
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tk.MustExec("set @@tidb_distsql_scan_concurrency = 10")
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tk.MustExec(fmt.Sprintf("set @@tidb_mem_quota_query=%v;", quota))
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var expect []string
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for i := range count {
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expect = append(expect, fmt.Sprintf("%v", i))
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}
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tk.MustQuery(sql).Sort().Check(testkit.Rows(expect...))
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// assert oom action worked by max consumed > memory quota
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require.Greater(t, tk.Session().GetSessionVars().StmtCtx.MemTracker.MaxConsumed(), int64(quota))
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}
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disableOOM := func(tk *testkit.TestKit, name, sql string) {
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t.Logf("disable OOM, testcase: %v", name)
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quota := 5*copr.MockResponseSizeForTest - 100
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tk.MustExec("SET GLOBAL tidb_mem_oom_action='CANCEL'")
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defer tk.MustExec("SET GLOBAL tidb_mem_oom_action = DEFAULT")
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tk.MustExec("use testoom")
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tk.MustExec("set @@tidb_enable_rate_limit_action=0")
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tk.MustExec("set @@tidb_distsql_scan_concurrency = 10")
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tk.MustExec(fmt.Sprintf("set @@tidb_mem_quota_query=%v;", quota))
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err := tk.QueryToErr(sql)
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require.Error(t, err)
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require.True(t, exeerrors.ErrMemoryExceedForQuery.Equal(err))
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}
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/store/copr/testRateLimitActionMockWaitMax", `return(true)`))
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// assert oom action and switch
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for _, testcase := range testcases {
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se, err := session.CreateSession4Test(store)
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require.NoError(t, err)
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tk.SetSession(se)
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enableOOM(tk, testcase.name, testcase.sql)
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tk.MustExec("set @@tidb_enable_rate_limit_action = 0")
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disableOOM(tk, testcase.name, testcase.sql)
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tk.MustExec("set @@tidb_enable_rate_limit_action = 1")
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enableOOM(tk, testcase.name, testcase.sql)
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se.Close()
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}
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globaltk := testkit.NewTestKit(t, store)
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globaltk.MustExec("use testoom")
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globaltk.MustExec("set global tidb_enable_rate_limit_action= 0")
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for _, testcase := range testcases {
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se, err := session.CreateSession4Test(store)
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require.NoError(t, err)
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tk.SetSession(se)
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disableOOM(tk, testcase.name, testcase.sql)
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se.Close()
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}
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globaltk.MustExec("set global tidb_enable_rate_limit_action= 1")
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for _, testcase := range testcases {
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se, err := session.CreateSession4Test(store)
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require.NoError(t, err)
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tk.SetSession(se)
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enableOOM(tk, testcase.name, testcase.sql)
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se.Close()
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}
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/store/copr/testRateLimitActionMockWaitMax"))
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// assert oom fallback
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for _, testcase := range testcases {
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t.Log(testcase.name)
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se, err := session.CreateSession4Test(store)
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require.NoError(t, err)
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tk.SetSession(se)
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tk.MustExec("use testoom")
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tk.MustExec("set tidb_distsql_scan_concurrency = 1")
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tk.MustExec("set @@tidb_mem_quota_query=1;")
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tk.MustExec("SET GLOBAL tidb_mem_oom_action='CANCEL'")
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err = tk.QueryToErr(testcase.sql)
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require.Error(t, err)
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require.True(t, exeerrors.ErrMemoryExceedForQuery.Equal(err))
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tk.MustExec("SET GLOBAL tidb_mem_oom_action = DEFAULT")
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se.Close()
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}
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}
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func TestCorrectScopeError(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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variable.RegisterSysVar(&variable.SysVar{Scope: vardef.ScopeNone, Name: "sv_none", Value: "acdc"})
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variable.RegisterSysVar(&variable.SysVar{Scope: vardef.ScopeGlobal, Name: "sv_global", Value: "acdc"})
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variable.RegisterSysVar(&variable.SysVar{Scope: vardef.ScopeSession, Name: "sv_session", Value: "acdc"})
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variable.RegisterSysVar(&variable.SysVar{Scope: vardef.ScopeGlobal | vardef.ScopeSession, Name: "sv_both", Value: "acdc"})
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// check set behavior
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// none
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_, err := tk.Exec("SET sv_none='acdc'")
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require.Equal(t, "[variable:1238]Variable 'sv_none' is a read only variable", err.Error())
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_, err = tk.Exec("SET GLOBAL sv_none='acdc'")
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require.Equal(t, "[variable:1238]Variable 'sv_none' is a read only variable", err.Error())
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// global
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tk.MustExec("SET GLOBAL sv_global='acdc'")
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_, err = tk.Exec("SET sv_global='acdc'")
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require.Equal(t, "[variable:1229]Variable 'sv_global' is a GLOBAL variable and should be set with SET GLOBAL", err.Error())
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// session
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_, err = tk.Exec("SET GLOBAL sv_session='acdc'")
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require.Equal(t, "[variable:1228]Variable 'sv_session' is a SESSION variable and can't be used with SET GLOBAL", err.Error())
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tk.MustExec("SET sv_session='acdc'")
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// both
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tk.MustExec("SET GLOBAL sv_both='acdc'")
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tk.MustExec("SET sv_both='acdc'")
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// unregister
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variable.UnregisterSysVar("sv_none")
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variable.UnregisterSysVar("sv_global")
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variable.UnregisterSysVar("sv_session")
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variable.UnregisterSysVar("sv_both")
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}
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func TestReadDMLBatchSize(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("set global tidb_dml_batch_size=1000")
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se, err := session.CreateSession(store)
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require.NoError(t, err)
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// `select 1` to load the global variables.
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_, _ = se.Execute(context.TODO(), "select 1")
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require.Equal(t, 1000, se.GetSessionVars().DMLBatchSize)
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}
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func TestSetEnableRateLimitAction(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("set @@tidb_enable_rate_limit_action=true")
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// assert default value
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result := tk.MustQuery("select @@tidb_enable_rate_limit_action;")
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result.Check(testkit.Rows("1"))
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tk.MustExec("use test")
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tk.MustExec("create table tmp123(id int)")
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rs, err := tk.Exec("select * from tmp123;")
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require.NoError(t, err)
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haveRateLimitAction := false
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action := tk.Session().GetSessionVars().MemTracker.GetFallbackForTest(false)
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for ; action != nil; action = action.GetFallback() {
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if action.GetPriority() == memory.DefRateLimitPriority {
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haveRateLimitAction = true
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break
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}
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}
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require.True(t, haveRateLimitAction)
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err = rs.Close()
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require.NoError(t, err)
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// assert set sys variable
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tk.MustExec("set global tidb_enable_rate_limit_action= '0';")
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tk.Session().Close()
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tk.RefreshSession()
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result = tk.MustQuery("select @@tidb_enable_rate_limit_action;")
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result.Check(testkit.Rows("0"))
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haveRateLimitAction = false
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action = tk.Session().GetSessionVars().MemTracker.GetFallbackForTest(false)
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for ; action != nil; action = action.GetFallback() {
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if action.GetPriority() == memory.DefRateLimitPriority {
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haveRateLimitAction = true
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break
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}
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}
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require.False(t, haveRateLimitAction)
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}
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func TestMaxExecutionTime(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("use test")
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tk.MustExec("create table MaxExecTime( id int,name varchar(128),age int);")
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tk.MustExec("begin")
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tk.MustExec("insert into MaxExecTime (id,name,age) values (1,'john',18),(2,'lary',19),(3,'lily',18);")
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tk.MustQuery("select /*+ MAX_EXECUTION_TIME(1000) MAX_EXECUTION_TIME(500) */ * FROM MaxExecTime;")
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require.Len(t, tk.Session().GetSessionVars().StmtCtx.GetWarnings(), 1)
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require.EqualError(t, tk.Session().GetSessionVars().StmtCtx.GetWarnings()[0].Err, "MAX_EXECUTION_TIME() is defined more than once, only the last definition takes effect: MAX_EXECUTION_TIME(500)")
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require.True(t, tk.Session().GetSessionVars().StmtCtx.HasMaxExecutionTime)
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require.Equal(t, uint64(500), tk.Session().GetSessionVars().StmtCtx.MaxExecutionTime)
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require.Equal(t, uint64(500), tk.Session().GetSessionVars().GetMaxExecutionTime())
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tk.MustQuery("select @@MAX_EXECUTION_TIME;").Check(testkit.Rows("0"))
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tk.MustQuery("select @@global.MAX_EXECUTION_TIME;").Check(testkit.Rows("0"))
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tk.MustQuery("select /*+ MAX_EXECUTION_TIME(1000) */ * FROM MaxExecTime;")
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tk.MustExec("set @@global.MAX_EXECUTION_TIME = 300;")
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tk.MustQuery("select * FROM MaxExecTime;")
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tk.MustExec("set @@MAX_EXECUTION_TIME = 150;")
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tk.MustQuery("select * FROM MaxExecTime;")
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require.Equal(t, uint64(150), tk.Session().GetSessionVars().GetMaxExecutionTime())
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tk.MustQuery("select /*+ MAX_EXECUTION_TIME(1000) */ * FROM MaxExecTime;")
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require.Equal(t, uint64(1000), tk.Session().GetSessionVars().GetMaxExecutionTime())
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tk.MustQuery("select @@global.MAX_EXECUTION_TIME;").Check(testkit.Rows("300"))
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tk.MustQuery("select @@MAX_EXECUTION_TIME;").Check(testkit.Rows("150"))
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tk.MustExec("set @@global.MAX_EXECUTION_TIME = 0;")
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tk.MustExec("set @@MAX_EXECUTION_TIME = 0;")
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tk.MustExec("commit")
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tk.MustExec("drop table if exists MaxExecTime;")
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}
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func TestReplicaRead(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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require.Nil(t, failpoint.Enable("github.com/pingcap/tidb/pkg/sessionctx/variable/GetReplicaReadUnadjusted", "return(true)"))
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require.Equal(t, kv.ReplicaReadLeader, tk.Session().GetSessionVars().GetReplicaRead())
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tk.MustExec("set @@tidb_replica_read = 'follower';")
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require.Equal(t, kv.ReplicaReadFollower, tk.Session().GetSessionVars().GetReplicaRead())
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tk.MustExec("set @@tidb_replica_read = 'leader';")
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require.Equal(t, kv.ReplicaReadLeader, tk.Session().GetSessionVars().GetReplicaRead())
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require.Nil(t, failpoint.Disable("github.com/pingcap/tidb/pkg/sessionctx/variable/GetReplicaReadUnadjusted"))
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}
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func TestIsolationRead(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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require.Len(t, tk.Session().GetSessionVars().GetIsolationReadEngines(), 3)
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tk.MustExec("set @@tidb_isolation_read_engines = 'tiflash';")
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engines := tk.Session().GetSessionVars().GetIsolationReadEngines()
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require.Len(t, engines, 1)
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_, hasTiFlash := engines[kv.TiFlash]
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_, hasTiKV := engines[kv.TiKV]
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require.True(t, hasTiFlash)
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require.False(t, hasTiKV)
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}
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func TestLastQueryInfo(t *testing.T) {
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require.NoError(t, failpoint.Enable("github.com/pingcap/tidb/pkg/executor/mockRUConsumption", `return()`))
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defer func() {
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require.NoError(t, failpoint.Disable("github.com/pingcap/tidb/pkg/executor/mockRUConsumption"))
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}()
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int, b int, index idx(a))")
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tk.MustExec(`prepare stmt1 from 'select * from t'`)
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tk.MustExec("execute stmt1")
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checkMatch := func(actual []string, expected []any) bool {
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return strings.Contains(actual[0], expected[0].(string))
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}
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tk.MustQuery("select @@tidb_last_query_info;").CheckWithFunc(testkit.Rows(`"ru_consumption":15`), checkMatch)
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tk.MustExec("select a from t where a = 1")
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tk.MustQuery("select @@tidb_last_query_info;").CheckWithFunc(testkit.Rows(`"ru_consumption":27`), checkMatch)
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tk.MustQuery("select @@tidb_last_query_info;").CheckWithFunc(testkit.Rows(`"ru_consumption":30`), checkMatch)
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}
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type mockZapCore struct {
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zapcore.Core
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fields []map[string]zapcore.Field
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}
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func (mzc *mockZapCore) Enabled(zapcore.Level) bool { return true }
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func (mzc *mockZapCore) Check(ent zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry {
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return ce.AddCore(ent, mzc)
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}
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func (mzc *mockZapCore) Write(ent zapcore.Entry, fields []zapcore.Field) error {
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if ent.Message == "GENERAL_LOG" {
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m := make(map[string]zapcore.Field)
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for _, field := range fields {
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m[field.Key] = field
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}
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mzc.fields = append(mzc.fields, m)
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}
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return nil
|
|
}
|
|
|
|
func TestMockZapCore(t *testing.T) {
|
|
mzc := mockZapCore{Core: zapcore.NewNopCore()}
|
|
zl := zap.New(&mzc)
|
|
zl.Info("First", zap.String("name", "foo")) // ignored
|
|
zl.Info("GENERAL_LOG") // no fields
|
|
sql := zap.String("sql", "select 1111") // 1 field
|
|
zl.Info("GENERAL_LOG", sql)
|
|
require.Len(t, mzc.fields, 2)
|
|
require.Len(t, mzc.fields[0], 0)
|
|
require.Len(t, mzc.fields[1], 1)
|
|
require.True(t, sql.Equals(mzc.fields[1]["sql"]))
|
|
}
|
|
|
|
func TestGeneralLogNonzeroTxnStartTS(t *testing.T) {
|
|
// mock logutil.GeneralLogger
|
|
oldGL := logutil.GeneralLogger
|
|
mzc := mockZapCore{Core: zapcore.NewNopCore()}
|
|
logutil.GeneralLogger = zap.New(&mzc)
|
|
defer func() { logutil.GeneralLogger = oldGL }()
|
|
|
|
// enable general log
|
|
oldVar := vardef.ProcessGeneralLog.Swap(true)
|
|
defer vardef.ProcessGeneralLog.Store(oldVar)
|
|
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t;")
|
|
tk.MustExec("create table t (id BIGINT PRIMARY KEY NOT NULL)")
|
|
sqlField := zap.String("sql", "insert t values (100)")
|
|
tk.MustExec(sqlField.String)
|
|
|
|
getTxnStartTS := func() (int64, bool) {
|
|
for _, fields := range mzc.fields {
|
|
if sql, ok := fields["sql"]; ok && sql.Equals(sqlField) {
|
|
return fields["txnStartTS"].Integer, true
|
|
}
|
|
}
|
|
return 0, false
|
|
}
|
|
|
|
ts, ok := getTxnStartTS()
|
|
require.True(t, ts > 0)
|
|
require.True(t, ok)
|
|
}
|
|
|
|
func TestGeneralLogBinaryText(t *testing.T) {
|
|
oldGL := logutil.GeneralLogger
|
|
mzc := mockZapCore{Core: zapcore.NewNopCore()}
|
|
logutil.GeneralLogger = zap.New(&mzc)
|
|
defer func() { logutil.GeneralLogger = oldGL }()
|
|
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
b := []byte{0x41, 0xf6, 0xec, 0x9a}
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("set session tidb_general_log = 1")
|
|
tk.MustExec("select * /*+ no_quoted */ from mysql.user")
|
|
sqlBinary := fmt.Sprintf("select * /*+ yes_quoted */ from mysql.user where User = _binary '%s'", b)
|
|
tk.MustExec(sqlBinary)
|
|
|
|
getSQLFields := func(s string) (sql zapcore.Field, originText zapcore.Field, ok bool) {
|
|
for _, fields := range mzc.fields {
|
|
if sql, ok := fields["sql"]; ok && strings.Contains(sql.String, s) {
|
|
return sql, fields["originText"], true
|
|
}
|
|
}
|
|
return zapcore.Field{}, zapcore.Field{}, false
|
|
}
|
|
|
|
sql, originText, ok := getSQLFields("no_quoted")
|
|
require.True(t, ok)
|
|
require.NotEmpty(t, sql.String)
|
|
require.Empty(t, originText.String)
|
|
|
|
sql, originText, ok = getSQLFields("yes_quote")
|
|
require.True(t, ok)
|
|
require.NotEmpty(t, sql.String)
|
|
require.NotEmpty(t, originText.String)
|
|
ot, err := strconv.Unquote(originText.String)
|
|
require.NoError(t, err)
|
|
require.Equal(t, sqlBinary, ot)
|
|
}
|